MagickCore 6.9.13-5
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/script/license.php %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44
45/*
46 Include declarations.
47*/
48#include "magick/studio.h"
49#include "magick/annotate.h"
50#include "magick/artifact.h"
51#include "magick/blob.h"
52#include "magick/cache.h"
53#include "magick/cache-private.h"
54#include "magick/cache-view.h"
55#include "magick/channel.h"
56#include "magick/color.h"
57#include "magick/color-private.h"
58#include "magick/colorspace.h"
59#include "magick/colorspace-private.h"
60#include "magick/composite.h"
61#include "magick/composite-private.h"
62#include "magick/constitute.h"
63#include "magick/draw.h"
64#include "magick/draw-private.h"
65#include "magick/enhance.h"
66#include "magick/exception.h"
67#include "magick/exception-private.h"
68#include "magick/gem.h"
69#include "magick/geometry.h"
70#include "magick/image-private.h"
71#include "magick/list.h"
72#include "magick/log.h"
73#include "magick/magick.h"
74#include "magick/memory-private.h"
75#include "magick/monitor.h"
76#include "magick/monitor-private.h"
77#include "magick/option.h"
78#include "magick/paint.h"
79#include "magick/pixel-accessor.h"
80#include "magick/pixel-private.h"
81#include "magick/property.h"
82#include "magick/resample.h"
83#include "magick/resample-private.h"
84#include "magick/resource_.h"
85#include "magick/splay-tree.h"
86#include "magick/string_.h"
87#include "magick/string-private.h"
88#include "magick/thread-private.h"
89#include "magick/token.h"
90#include "magick/transform.h"
91#include "magick/utility.h"
92
93/*
94 Define declarations.
95*/
96#define AntialiasThreshold (1.0/3.0)
97#define BezierQuantum 200
98#define PrimitiveExtentPad 4296.0
99#define MaxBezierCoordinates 67108864
100#define ThrowPointExpectedException(image,token) \
101{ \
102 (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
103 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
104 status=MagickFalse; \
105 break; \
106}
107
108/*
109 Typedef declarations.
110*/
111typedef struct _EdgeInfo
112{
114 bounds;
115
116 double
117 scanline;
118
120 *points;
121
122 size_t
123 number_points;
124
125 ssize_t
126 direction;
127
128 MagickBooleanType
129 ghostline;
130
131 size_t
132 highwater;
133} EdgeInfo;
134
135typedef struct _ElementInfo
136{
137 double
138 cx,
139 cy,
140 major,
141 minor,
142 angle;
144
145typedef struct _MVGInfo
146{
148 **primitive_info;
149
150 size_t
151 *extent;
152
153 ssize_t
154 offset;
155
157 point;
158
160 *exception;
161} MVGInfo;
162
163typedef struct _PolygonInfo
164{
166 *edges;
167
168 size_t
169 number_edges;
171
172typedef enum
173{
174 MoveToCode,
175 OpenCode,
176 GhostlineCode,
177 LineToCode,
178 EndCode
179} PathInfoCode;
180
181typedef struct _PathInfo
182{
184 point;
185
186 PathInfoCode
187 code;
188} PathInfo;
189
190/*
191 Forward declarations.
192*/
193static Image
194 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
195 ExceptionInfo *);
196
197static MagickBooleanType
198 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
199 RenderMVGContent(Image *,const DrawInfo *,const size_t),
200 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
201 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
202 const double,const MagickBooleanType,const MagickBooleanType),
203 TraceBezier(MVGInfo *,const size_t),
204 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
205 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
206 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
207 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
208 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
209 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
210
211static PrimitiveInfo
212 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
213
214static ssize_t
215 TracePath(Image *,MVGInfo *,const char *);
216
217/*
218%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
219% %
220% %
221% %
222% A c q u i r e D r a w I n f o %
223% %
224% %
225% %
226%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
227%
228% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
229%
230% The format of the AcquireDrawInfo method is:
231%
232% DrawInfo *AcquireDrawInfo(void)
233%
234*/
235MagickExport DrawInfo *AcquireDrawInfo(void)
236{
238 *draw_info;
239
240 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
241 GetDrawInfo((ImageInfo *) NULL,draw_info);
242 return(draw_info);
243}
244
245/*
246%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
247% %
248% %
249% %
250% C l o n e D r a w I n f o %
251% %
252% %
253% %
254%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
255%
256% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
257% is specified, a new DrawInfo structure is created initialized to default
258% values.
259%
260% The format of the CloneDrawInfo method is:
261%
262% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
263% const DrawInfo *draw_info)
264%
265% A description of each parameter follows:
266%
267% o image_info: the image info.
268%
269% o draw_info: the draw info.
270%
271*/
272MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
273 const DrawInfo *draw_info)
274{
276 *clone_info;
277
278 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
279 GetDrawInfo(image_info,clone_info);
280 if (draw_info == (DrawInfo *) NULL)
281 return(clone_info);
282 if (draw_info->id != (char *) NULL)
283 (void) CloneString(&clone_info->id,draw_info->id);
284 if (draw_info->primitive != (char *) NULL)
285 (void) CloneString(&clone_info->primitive,draw_info->primitive);
286 if (draw_info->geometry != (char *) NULL)
287 (void) CloneString(&clone_info->geometry,draw_info->geometry);
288 clone_info->compliance=draw_info->compliance;
289 clone_info->viewbox=draw_info->viewbox;
290 clone_info->affine=draw_info->affine;
291 clone_info->gravity=draw_info->gravity;
292 clone_info->fill=draw_info->fill;
293 clone_info->stroke=draw_info->stroke;
294 clone_info->stroke_width=draw_info->stroke_width;
295 if (draw_info->fill_pattern != (Image *) NULL)
296 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
297 &draw_info->fill_pattern->exception);
298 else
299 if (draw_info->tile != (Image *) NULL)
300 clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
301 &draw_info->tile->exception);
302 clone_info->tile=NewImageList(); /* tile is deprecated */
303 if (draw_info->stroke_pattern != (Image *) NULL)
304 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
305 MagickTrue,&draw_info->stroke_pattern->exception);
306 clone_info->stroke_antialias=draw_info->stroke_antialias;
307 clone_info->text_antialias=draw_info->text_antialias;
308 clone_info->fill_rule=draw_info->fill_rule;
309 clone_info->linecap=draw_info->linecap;
310 clone_info->linejoin=draw_info->linejoin;
311 clone_info->miterlimit=draw_info->miterlimit;
312 clone_info->dash_offset=draw_info->dash_offset;
313 clone_info->decorate=draw_info->decorate;
314 clone_info->compose=draw_info->compose;
315 if (draw_info->text != (char *) NULL)
316 (void) CloneString(&clone_info->text,draw_info->text);
317 if (draw_info->font != (char *) NULL)
318 (void) CloneString(&clone_info->font,draw_info->font);
319 if (draw_info->metrics != (char *) NULL)
320 (void) CloneString(&clone_info->metrics,draw_info->metrics);
321 if (draw_info->family != (char *) NULL)
322 (void) CloneString(&clone_info->family,draw_info->family);
323 clone_info->style=draw_info->style;
324 clone_info->stretch=draw_info->stretch;
325 clone_info->weight=draw_info->weight;
326 if (draw_info->encoding != (char *) NULL)
327 (void) CloneString(&clone_info->encoding,draw_info->encoding);
328 clone_info->pointsize=draw_info->pointsize;
329 clone_info->kerning=draw_info->kerning;
330 clone_info->interline_spacing=draw_info->interline_spacing;
331 clone_info->interword_spacing=draw_info->interword_spacing;
332 clone_info->direction=draw_info->direction;
333 if (draw_info->density != (char *) NULL)
334 (void) CloneString(&clone_info->density,draw_info->density);
335 clone_info->align=draw_info->align;
336 clone_info->undercolor=draw_info->undercolor;
337 clone_info->border_color=draw_info->border_color;
338 if (draw_info->server_name != (char *) NULL)
339 (void) CloneString(&clone_info->server_name,draw_info->server_name);
340 if (draw_info->dash_pattern != (double *) NULL)
341 {
342 ssize_t
343 x;
344
345 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
346 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
347 sizeof(*clone_info->dash_pattern));
348 if (clone_info->dash_pattern == (double *) NULL)
349 ThrowFatalException(ResourceLimitFatalError,
350 "UnableToAllocateDashPattern");
351 (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
352 sizeof(*clone_info->dash_pattern));
353 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
354 (x+1)*sizeof(*clone_info->dash_pattern));
355 }
356 clone_info->gradient=draw_info->gradient;
357 if (draw_info->gradient.stops != (StopInfo *) NULL)
358 {
359 size_t
360 number_stops;
361
362 number_stops=clone_info->gradient.number_stops;
363 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
364 number_stops,sizeof(*clone_info->gradient.stops));
365 if (clone_info->gradient.stops == (StopInfo *) NULL)
366 ThrowFatalException(ResourceLimitFatalError,
367 "UnableToAllocateDashPattern");
368 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
369 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
370 }
371 clone_info->bounds=draw_info->bounds;
372 clone_info->fill_opacity=draw_info->fill_opacity;
373 clone_info->stroke_opacity=draw_info->stroke_opacity;
374 clone_info->element_reference=draw_info->element_reference;
375 clone_info->clip_path=draw_info->clip_path;
376 clone_info->clip_units=draw_info->clip_units;
377 if (draw_info->clip_mask != (char *) NULL)
378 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
379 if (draw_info->clipping_mask != (Image *) NULL)
380 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
381 MagickTrue,&draw_info->clipping_mask->exception);
382 if (draw_info->composite_mask != (Image *) NULL)
383 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
384 MagickTrue,&draw_info->composite_mask->exception);
385 clone_info->render=draw_info->render;
386 clone_info->debug=draw_info->debug;
387 return(clone_info);
388}
389
390/*
391%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
392% %
393% %
394% %
395+ C o n v e r t P a t h T o P o l y g o n %
396% %
397% %
398% %
399%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
400%
401% ConvertPathToPolygon() converts a path to the more efficient sorted
402% rendering form.
403%
404% The format of the ConvertPathToPolygon method is:
405%
406% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
407% ExceptionInfo *exception)
408%
409% A description of each parameter follows:
410%
411% o ConvertPathToPolygon() returns the path in a more efficient sorted
412% rendering form of type PolygonInfo.
413%
414% o draw_info: Specifies a pointer to an DrawInfo structure.
415%
416% o path_info: Specifies a pointer to an PathInfo structure.
417%
418% o exception: return any errors or warnings in this structure.
419%
420*/
421
422static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
423{
424 ssize_t
425 i;
426
427 if (polygon_info->edges != (EdgeInfo *) NULL)
428 {
429 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
430 if (polygon_info->edges[i].points != (PointInfo *) NULL)
431 polygon_info->edges[i].points=(PointInfo *)
432 RelinquishMagickMemory(polygon_info->edges[i].points);
433 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
434 polygon_info->edges);
435 }
436 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
437}
438
439#if defined(__cplusplus) || defined(c_plusplus)
440extern "C" {
441#endif
442
443static int DrawCompareEdges(const void *p_edge,const void *q_edge)
444{
445#define DrawCompareEdge(p,q) \
446{ \
447 if (((p)-(q)) < 0.0) \
448 return(-1); \
449 if (((p)-(q)) > 0.0) \
450 return(1); \
451}
452
453 const PointInfo
454 *p,
455 *q;
456
457 /*
458 Edge sorting for right-handed coordinate system.
459 */
460 p=((const EdgeInfo *) p_edge)->points;
461 q=((const EdgeInfo *) q_edge)->points;
462 DrawCompareEdge(p[0].y,q[0].y);
463 DrawCompareEdge(p[0].x,q[0].x);
464 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
465 (q[1].x-q[0].x));
466 DrawCompareEdge(p[1].y,q[1].y);
467 DrawCompareEdge(p[1].x,q[1].x);
468 return(0);
469}
470
471#if defined(__cplusplus) || defined(c_plusplus)
472}
473#endif
474
475static void LogPolygonInfo(const PolygonInfo *polygon_info)
476{
478 *p;
479
480 ssize_t
481 i,
482 j;
483
484 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
485 p=polygon_info->edges;
486 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
487 {
488 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
489 (double) i);
490 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
491 p->direction != MagickFalse ? "down" : "up");
492 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
493 p->ghostline != MagickFalse ? "transparent" : "opaque");
494 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
495 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
496 p->bounds.x2,p->bounds.y2);
497 for (j=0; j < (ssize_t) p->number_points; j++)
498 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
499 p->points[j].x,p->points[j].y);
500 p++;
501 }
502 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
503}
504
505static void ReversePoints(PointInfo *points,const size_t number_points)
506{
508 point;
509
510 ssize_t
511 i;
512
513 for (i=0; i < (ssize_t) (number_points >> 1); i++)
514 {
515 point=points[i];
516 points[i]=points[number_points-(i+1)];
517 points[number_points-(i+1)]=point;
518 }
519}
520
521static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
522 ExceptionInfo *exception)
523{
524 long
525 direction,
526 next_direction;
527
529 point,
530 *points;
531
533 *polygon_info;
534
536 bounds;
537
538 ssize_t
539 i,
540 n;
541
542 MagickBooleanType
543 ghostline;
544
545 size_t
546 edge,
547 number_edges,
548 number_points;
549
550 /*
551 Convert a path to the more efficient sorted rendering form.
552 */
553 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
554 if (polygon_info == (PolygonInfo *) NULL)
555 {
556 (void) ThrowMagickException(exception,GetMagickModule(),
557 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
558 return((PolygonInfo *) NULL);
559 }
560 number_edges=16;
561 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
562 sizeof(*polygon_info->edges));
563 if (polygon_info->edges == (EdgeInfo *) NULL)
564 {
565 (void) ThrowMagickException(exception,GetMagickModule(),
566 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
567 return(DestroyPolygonInfo(polygon_info));
568 }
569 (void) memset(polygon_info->edges,0,number_edges*
570 sizeof(*polygon_info->edges));
571 direction=0;
572 edge=0;
573 ghostline=MagickFalse;
574 n=0;
575 number_points=0;
576 points=(PointInfo *) NULL;
577 (void) memset(&point,0,sizeof(point));
578 (void) memset(&bounds,0,sizeof(bounds));
579 polygon_info->edges[edge].number_points=(size_t) n;
580 polygon_info->edges[edge].scanline=0.0;
581 polygon_info->edges[edge].highwater=0;
582 polygon_info->edges[edge].ghostline=ghostline;
583 polygon_info->edges[edge].direction=(ssize_t) direction;
584 polygon_info->edges[edge].points=points;
585 polygon_info->edges[edge].bounds=bounds;
586 polygon_info->number_edges=0;
587 for (i=0; path_info[i].code != EndCode; i++)
588 {
589 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
590 (path_info[i].code == GhostlineCode))
591 {
592 /*
593 Move to.
594 */
595 if ((points != (PointInfo *) NULL) && (n >= 2))
596 {
597 if (edge == number_edges)
598 {
599 number_edges<<=1;
600 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
601 polygon_info->edges,(size_t) number_edges,
602 sizeof(*polygon_info->edges));
603 if (polygon_info->edges == (EdgeInfo *) NULL)
604 {
605 (void) ThrowMagickException(exception,GetMagickModule(),
606 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
607 points=(PointInfo *) RelinquishMagickMemory(points);
608 return(DestroyPolygonInfo(polygon_info));
609 }
610 }
611 polygon_info->edges[edge].number_points=(size_t) n;
612 polygon_info->edges[edge].scanline=(-1.0);
613 polygon_info->edges[edge].highwater=0;
614 polygon_info->edges[edge].ghostline=ghostline;
615 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
616 if (direction < 0)
617 ReversePoints(points,(size_t) n);
618 polygon_info->edges[edge].points=points;
619 polygon_info->edges[edge].bounds=bounds;
620 polygon_info->edges[edge].bounds.y1=points[0].y;
621 polygon_info->edges[edge].bounds.y2=points[n-1].y;
622 points=(PointInfo *) NULL;
623 ghostline=MagickFalse;
624 edge++;
625 polygon_info->number_edges=edge;
626 }
627 if (points == (PointInfo *) NULL)
628 {
629 number_points=16;
630 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
631 sizeof(*points));
632 if (points == (PointInfo *) NULL)
633 {
634 (void) ThrowMagickException(exception,GetMagickModule(),
635 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
636 return(DestroyPolygonInfo(polygon_info));
637 }
638 }
639 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
640 point=path_info[i].point;
641 points[0]=point;
642 bounds.x1=point.x;
643 bounds.x2=point.x;
644 direction=0;
645 n=1;
646 continue;
647 }
648 /*
649 Line to.
650 */
651 next_direction=((path_info[i].point.y > point.y) ||
652 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
653 (path_info[i].point.x > point.x))) ? 1 : -1;
654 if ((points != (PointInfo *) NULL) && (direction != 0) &&
655 (direction != next_direction))
656 {
657 /*
658 New edge.
659 */
660 point=points[n-1];
661 if (edge == number_edges)
662 {
663 number_edges<<=1;
664 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
665 polygon_info->edges,(size_t) number_edges,
666 sizeof(*polygon_info->edges));
667 if (polygon_info->edges == (EdgeInfo *) NULL)
668 {
669 (void) ThrowMagickException(exception,GetMagickModule(),
670 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
671 points=(PointInfo *) RelinquishMagickMemory(points);
672 return(DestroyPolygonInfo(polygon_info));
673 }
674 }
675 polygon_info->edges[edge].number_points=(size_t) n;
676 polygon_info->edges[edge].scanline=(-1.0);
677 polygon_info->edges[edge].highwater=0;
678 polygon_info->edges[edge].ghostline=ghostline;
679 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
680 if (direction < 0)
681 ReversePoints(points,(size_t) n);
682 polygon_info->edges[edge].points=points;
683 polygon_info->edges[edge].bounds=bounds;
684 polygon_info->edges[edge].bounds.y1=points[0].y;
685 polygon_info->edges[edge].bounds.y2=points[n-1].y;
686 polygon_info->number_edges=edge+1;
687 points=(PointInfo *) NULL;
688 number_points=16;
689 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
690 sizeof(*points));
691 if (points == (PointInfo *) NULL)
692 {
693 (void) ThrowMagickException(exception,GetMagickModule(),
694 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
695 return(DestroyPolygonInfo(polygon_info));
696 }
697 n=1;
698 ghostline=MagickFalse;
699 points[0]=point;
700 bounds.x1=point.x;
701 bounds.x2=point.x;
702 edge++;
703 }
704 direction=next_direction;
705 if (points == (PointInfo *) NULL)
706 continue;
707 if (n == (ssize_t) number_points)
708 {
709 number_points<<=1;
710 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
711 sizeof(*points));
712 if (points == (PointInfo *) NULL)
713 {
714 (void) ThrowMagickException(exception,GetMagickModule(),
715 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
716 return(DestroyPolygonInfo(polygon_info));
717 }
718 }
719 point=path_info[i].point;
720 points[n]=point;
721 if (point.x < bounds.x1)
722 bounds.x1=point.x;
723 if (point.x > bounds.x2)
724 bounds.x2=point.x;
725 n++;
726 }
727 if (points != (PointInfo *) NULL)
728 {
729 if (n < 2)
730 points=(PointInfo *) RelinquishMagickMemory(points);
731 else
732 {
733 if (edge == number_edges)
734 {
735 number_edges<<=1;
736 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
737 polygon_info->edges,(size_t) number_edges,
738 sizeof(*polygon_info->edges));
739 if (polygon_info->edges == (EdgeInfo *) NULL)
740 {
741 (void) ThrowMagickException(exception,GetMagickModule(),
742 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
743 return(DestroyPolygonInfo(polygon_info));
744 }
745 }
746 polygon_info->edges[edge].number_points=(size_t) n;
747 polygon_info->edges[edge].scanline=(-1.0);
748 polygon_info->edges[edge].highwater=0;
749 polygon_info->edges[edge].ghostline=ghostline;
750 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
751 if (direction < 0)
752 ReversePoints(points,(size_t) n);
753 polygon_info->edges[edge].points=points;
754 polygon_info->edges[edge].bounds=bounds;
755 polygon_info->edges[edge].bounds.y1=points[0].y;
756 polygon_info->edges[edge].bounds.y2=points[n-1].y;
757 points=(PointInfo *) NULL;
758 ghostline=MagickFalse;
759 edge++;
760 polygon_info->number_edges=edge;
761 }
762 }
763 polygon_info->number_edges=edge;
764 polygon_info->number_edges=edge;
765 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
766 polygon_info->number_edges,sizeof(*polygon_info->edges));
767 if (polygon_info->edges == (EdgeInfo *) NULL)
768 {
769 (void) ThrowMagickException(exception,GetMagickModule(),
770 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
771 return(DestroyPolygonInfo(polygon_info));
772 }
773 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
774 {
776 *edge_info;
777
778 edge_info=polygon_info->edges+i;
779 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
780 edge_info->number_points,sizeof(*edge_info->points));
781 if (edge_info->points == (PointInfo *) NULL)
782 {
783 (void) ThrowMagickException(exception,GetMagickModule(),
784 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
785 return(DestroyPolygonInfo(polygon_info));
786 }
787 }
788 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
789 sizeof(*polygon_info->edges),DrawCompareEdges);
790 if ((GetLogEventMask() & DrawEvent) != 0)
791 LogPolygonInfo(polygon_info);
792 return(polygon_info);
793}
794
795/*
796%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
797% %
798% %
799% %
800+ C o n v e r t P r i m i t i v e T o P a t h %
801% %
802% %
803% %
804%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
805%
806% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
807% path structure.
808%
809% The format of the ConvertPrimitiveToPath method is:
810%
811% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
812% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
813%
814% A description of each parameter follows:
815%
816% o ConvertPrimitiveToPath() returns a vector path structure of type
817% PathInfo.
818%
819% o draw_info: a structure of type DrawInfo.
820%
821% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
822%
823%
824*/
825
826static void LogPathInfo(const PathInfo *path_info)
827{
828 const PathInfo
829 *p;
830
831 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
832 for (p=path_info; p->code != EndCode; p++)
833 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
834 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
835 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
836 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
837 "?");
838 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
839}
840
841static PathInfo *ConvertPrimitiveToPath(
842 const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
843 ExceptionInfo *exception)
844{
845 MagickBooleanType
846 closed_subpath;
847
849 *path_info;
850
851 PathInfoCode
852 code;
853
855 p,
856 q;
857
858 ssize_t
859 i,
860 n;
861
862 ssize_t
863 coordinates,
864 start;
865
866 magick_unreferenced(draw_info);
867
868 /*
869 Converts a PrimitiveInfo structure into a vector path structure.
870 */
871 switch (primitive_info->primitive)
872 {
873 case PointPrimitive:
874 case ColorPrimitive:
875 case MattePrimitive:
876 case TextPrimitive:
877 case ImagePrimitive:
878 return((PathInfo *) NULL);
879 default:
880 break;
881 }
882 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
883 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
884 sizeof(*path_info));
885 if (path_info == (PathInfo *) NULL)
886 {
887 (void) ThrowMagickException(exception,GetMagickModule(),
888 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
889 return((PathInfo *) NULL);
890 }
891 coordinates=0;
892 closed_subpath=MagickFalse;
893 n=0;
894 p.x=(-1.0);
895 p.y=(-1.0);
896 q.x=(-1.0);
897 q.y=(-1.0);
898 start=0;
899 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
900 {
901 code=LineToCode;
902 if (coordinates <= 0)
903 {
904 /*
905 New subpath.
906 */
907 coordinates=(ssize_t) primitive_info[i].coordinates;
908 p=primitive_info[i].point;
909 start=n;
910 code=MoveToCode;
911 closed_subpath=primitive_info[i].closed_subpath;
912 }
913 coordinates--;
914 if ((code == MoveToCode) || (coordinates <= 0) ||
915 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
916 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
917 {
918 /*
919 Eliminate duplicate points.
920 */
921 path_info[n].code=code;
922 path_info[n].point=primitive_info[i].point;
923 q=primitive_info[i].point;
924 n++;
925 }
926 if (coordinates > 0)
927 continue; /* next point in current subpath */
928 if (closed_subpath != MagickFalse)
929 {
930 closed_subpath=MagickFalse;
931 continue;
932 }
933 /*
934 Mark the p point as open if the subpath is not closed.
935 */
936 path_info[start].code=OpenCode;
937 path_info[n].code=GhostlineCode;
938 path_info[n].point=primitive_info[i].point;
939 n++;
940 path_info[n].code=LineToCode;
941 path_info[n].point=p;
942 n++;
943 }
944 path_info[n].code=EndCode;
945 path_info[n].point.x=0.0;
946 path_info[n].point.y=0.0;
947 if (IsEventLogging() != MagickFalse)
948 LogPathInfo(path_info);
949 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
950 sizeof(*path_info));
951 return(path_info);
952}
953
954/*
955%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
956% %
957% %
958% %
959% D e s t r o y D r a w I n f o %
960% %
961% %
962% %
963%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
964%
965% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
966%
967% The format of the DestroyDrawInfo method is:
968%
969% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
970%
971% A description of each parameter follows:
972%
973% o draw_info: the draw info.
974%
975*/
976MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
977{
978 assert(draw_info != (DrawInfo *) NULL);
979 assert(draw_info->signature == MagickCoreSignature);
980 if (IsEventLogging() != MagickFalse)
981 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
982 if (draw_info->id != (char *) NULL)
983 draw_info->id=DestroyString(draw_info->id);
984 if (draw_info->primitive != (char *) NULL)
985 draw_info->primitive=DestroyString(draw_info->primitive);
986 if (draw_info->text != (char *) NULL)
987 draw_info->text=DestroyString(draw_info->text);
988 if (draw_info->geometry != (char *) NULL)
989 draw_info->geometry=DestroyString(draw_info->geometry);
990 if (draw_info->tile != (Image *) NULL)
991 draw_info->tile=DestroyImage(draw_info->tile);
992 if (draw_info->fill_pattern != (Image *) NULL)
993 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
994 if (draw_info->stroke_pattern != (Image *) NULL)
995 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
996 if (draw_info->font != (char *) NULL)
997 draw_info->font=DestroyString(draw_info->font);
998 if (draw_info->metrics != (char *) NULL)
999 draw_info->metrics=DestroyString(draw_info->metrics);
1000 if (draw_info->family != (char *) NULL)
1001 draw_info->family=DestroyString(draw_info->family);
1002 if (draw_info->encoding != (char *) NULL)
1003 draw_info->encoding=DestroyString(draw_info->encoding);
1004 if (draw_info->density != (char *) NULL)
1005 draw_info->density=DestroyString(draw_info->density);
1006 if (draw_info->server_name != (char *) NULL)
1007 draw_info->server_name=(char *)
1008 RelinquishMagickMemory(draw_info->server_name);
1009 if (draw_info->dash_pattern != (double *) NULL)
1010 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1011 draw_info->dash_pattern);
1012 if (draw_info->gradient.stops != (StopInfo *) NULL)
1013 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1014 draw_info->gradient.stops);
1015 if (draw_info->clip_mask != (char *) NULL)
1016 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1017 if (draw_info->clipping_mask != (Image *) NULL)
1018 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1019 if (draw_info->composite_mask != (Image *) NULL)
1020 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1021 if (draw_info->image_info != (ImageInfo *) NULL)
1022 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1023 draw_info->signature=(~MagickCoreSignature);
1024 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1025 return(draw_info);
1026}
1027
1028/*
1029%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1030% %
1031% %
1032% %
1033% D r a w A f f i n e I m a g e %
1034% %
1035% %
1036% %
1037%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1038%
1039% DrawAffineImage() composites the source over the destination image as
1040% dictated by the affine transform.
1041%
1042% The format of the DrawAffineImage method is:
1043%
1044% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1045% const AffineMatrix *affine)
1046%
1047% A description of each parameter follows:
1048%
1049% o image: the image.
1050%
1051% o source: the source image.
1052%
1053% o affine: the affine transform.
1054%
1055*/
1056
1057static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1058 const double y,const SegmentInfo *edge)
1059{
1060 double
1061 intercept,
1062 z;
1063
1064 double
1065 x;
1066
1068 inverse_edge;
1069
1070 /*
1071 Determine left and right edges.
1072 */
1073 inverse_edge.x1=edge->x1;
1074 inverse_edge.y1=edge->y1;
1075 inverse_edge.x2=edge->x2;
1076 inverse_edge.y2=edge->y2;
1077 z=affine->ry*y+affine->tx;
1078 if (affine->sx >= MagickEpsilon)
1079 {
1080 intercept=(-z/affine->sx);
1081 x=intercept;
1082 if (x > inverse_edge.x1)
1083 inverse_edge.x1=x;
1084 intercept=(-z+(double) image->columns)/affine->sx;
1085 x=intercept;
1086 if (x < inverse_edge.x2)
1087 inverse_edge.x2=x;
1088 }
1089 else
1090 if (affine->sx < -MagickEpsilon)
1091 {
1092 intercept=(-z+(double) image->columns)/affine->sx;
1093 x=intercept;
1094 if (x > inverse_edge.x1)
1095 inverse_edge.x1=x;
1096 intercept=(-z/affine->sx);
1097 x=intercept;
1098 if (x < inverse_edge.x2)
1099 inverse_edge.x2=x;
1100 }
1101 else
1102 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1103 {
1104 inverse_edge.x2=edge->x1;
1105 return(inverse_edge);
1106 }
1107 /*
1108 Determine top and bottom edges.
1109 */
1110 z=affine->sy*y+affine->ty;
1111 if (affine->rx >= MagickEpsilon)
1112 {
1113 intercept=(-z/affine->rx);
1114 x=intercept;
1115 if (x > inverse_edge.x1)
1116 inverse_edge.x1=x;
1117 intercept=(-z+(double) image->rows)/affine->rx;
1118 x=intercept;
1119 if (x < inverse_edge.x2)
1120 inverse_edge.x2=x;
1121 }
1122 else
1123 if (affine->rx < -MagickEpsilon)
1124 {
1125 intercept=(-z+(double) image->rows)/affine->rx;
1126 x=intercept;
1127 if (x > inverse_edge.x1)
1128 inverse_edge.x1=x;
1129 intercept=(-z/affine->rx);
1130 x=intercept;
1131 if (x < inverse_edge.x2)
1132 inverse_edge.x2=x;
1133 }
1134 else
1135 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1136 {
1137 inverse_edge.x2=edge->x2;
1138 return(inverse_edge);
1139 }
1140 return(inverse_edge);
1141}
1142
1143static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1144{
1146 inverse_affine;
1147
1148 double
1149 determinant;
1150
1151 determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1152 affine->ry);
1153 inverse_affine.sx=determinant*affine->sy;
1154 inverse_affine.rx=determinant*(-affine->rx);
1155 inverse_affine.ry=determinant*(-affine->ry);
1156 inverse_affine.sy=determinant*affine->sx;
1157 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1158 inverse_affine.ry;
1159 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1160 inverse_affine.sy;
1161 return(inverse_affine);
1162}
1163
1164MagickExport MagickBooleanType DrawAffineImage(Image *image,
1165 const Image *source,const AffineMatrix *affine)
1166{
1168 inverse_affine;
1169
1170 CacheView
1171 *image_view,
1172 *source_view;
1173
1175 *exception;
1176
1177 MagickBooleanType
1178 status;
1179
1181 zero;
1182
1183 PointInfo
1184 extent[4],
1185 min,
1186 max,
1187 point;
1188
1189 ssize_t
1190 i;
1191
1193 edge;
1194
1195 ssize_t
1196 start,
1197 stop,
1198 y;
1199
1200 /*
1201 Determine bounding box.
1202 */
1203 assert(image != (Image *) NULL);
1204 assert(image->signature == MagickCoreSignature);
1205 assert(source != (const Image *) NULL);
1206 assert(source->signature == MagickCoreSignature);
1207 if (IsEventLogging() != MagickFalse)
1208 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1209 assert(affine != (AffineMatrix *) NULL);
1210 extent[0].x=0.0;
1211 extent[0].y=0.0;
1212 extent[1].x=(double) source->columns;
1213 extent[1].y=0.0;
1214 extent[2].x=(double) source->columns;
1215 extent[2].y=(double) source->rows;
1216 extent[3].x=0.0;
1217 extent[3].y=(double) source->rows;
1218 for (i=0; i < 4; i++)
1219 {
1220 point=extent[i];
1221 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1222 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1223 }
1224 min=extent[0];
1225 max=extent[0];
1226 for (i=1; i < 4; i++)
1227 {
1228 if (min.x > extent[i].x)
1229 min.x=extent[i].x;
1230 if (min.y > extent[i].y)
1231 min.y=extent[i].y;
1232 if (max.x < extent[i].x)
1233 max.x=extent[i].x;
1234 if (max.y < extent[i].y)
1235 max.y=extent[i].y;
1236 }
1237 /*
1238 Affine transform image.
1239 */
1240 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1241 return(MagickFalse);
1242 status=MagickTrue;
1243 edge.x1=min.x;
1244 edge.y1=min.y;
1245 edge.x2=max.x;
1246 edge.y2=max.y;
1247 inverse_affine=InverseAffineMatrix(affine);
1248 if (edge.y1 < 0.0)
1249 edge.y1=0.0;
1250 if (edge.y2 > (image->rows-1.0))
1251 edge.y2=image->rows-1.0;
1252 GetMagickPixelPacket(image,&zero);
1253 exception=(&image->exception);
1254 start=CastDoubleToLong(ceil(edge.y1-0.5));
1255 stop=CastDoubleToLong(floor(edge.y2+0.5));
1256 source_view=AcquireVirtualCacheView(source,exception);
1257 image_view=AcquireAuthenticCacheView(image,exception);
1258#if defined(MAGICKCORE_OPENMP_SUPPORT)
1259 #pragma omp parallel for schedule(static) shared(status) \
1260 magick_number_threads(source,image,stop-start,1)
1261#endif
1262 for (y=start; y <= stop; y++)
1263 {
1264 IndexPacket
1265 *magick_restrict indexes;
1266
1268 composite,
1269 pixel;
1270
1271 PointInfo
1272 point;
1273
1275 *magick_restrict q;
1276
1278 inverse_edge;
1279
1280 ssize_t
1281 x,
1282 x_offset;
1283
1284 if (status == MagickFalse)
1285 continue;
1286 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1287 if (inverse_edge.x2 < inverse_edge.x1)
1288 continue;
1289 if (inverse_edge.x1 < 0.0)
1290 inverse_edge.x1=0.0;
1291 if (inverse_edge.x2 > image->columns-1.0)
1292 inverse_edge.x2=image->columns-1.0;
1293 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1294 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1295 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1296 if (q == (PixelPacket *) NULL)
1297 continue;
1298 indexes=GetCacheViewAuthenticIndexQueue(image_view);
1299 pixel=zero;
1300 composite=zero;
1301 x_offset=0;
1302 for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1303 x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1304 {
1305 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1306 inverse_affine.tx;
1307 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1308 inverse_affine.ty;
1309 status=InterpolateMagickPixelPacket(source,source_view,
1310 UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1311 if (status == MagickFalse)
1312 break;
1313 SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1314 MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1315 composite.opacity,&composite);
1316 SetPixelPacket(image,&composite,q,indexes+x_offset);
1317 x_offset++;
1318 q++;
1319 }
1320 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1321 status=MagickFalse;
1322 }
1323 source_view=DestroyCacheView(source_view);
1324 image_view=DestroyCacheView(image_view);
1325 return(status);
1326}
1327
1328/*
1329%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1330% %
1331% %
1332% %
1333+ D r a w B o u n d i n g R e c t a n g l e s %
1334% %
1335% %
1336% %
1337%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1338%
1339% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1340% is only useful for developers debugging the rendering algorithm.
1341%
1342% The format of the DrawBoundingRectangles method is:
1343%
1344% MagickBooleanType DrawBoundingRectangles(Image *image,
1345% const DrawInfo *draw_info,PolygonInfo *polygon_info)
1346%
1347% A description of each parameter follows:
1348%
1349% o image: the image.
1350%
1351% o draw_info: the draw info.
1352%
1353% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1354%
1355*/
1356
1357static MagickBooleanType DrawBoundingRectangles(Image *image,
1358 const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1359{
1360 double
1361 mid;
1362
1363 DrawInfo
1364 *clone_info;
1365
1366 MagickStatusType
1367 status;
1368
1369 PointInfo
1370 end,
1371 resolution,
1372 start;
1373
1375 primitive_info[6];
1376
1377 ssize_t
1378 i;
1379
1381 bounds;
1382
1383 ssize_t
1384 coordinates;
1385
1386 (void) memset(primitive_info,0,sizeof(primitive_info));
1387 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1388 status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1389 if (status == MagickFalse)
1390 {
1391 clone_info=DestroyDrawInfo(clone_info);
1392 return(MagickFalse);
1393 }
1394 resolution.x=96.0;
1395 resolution.y=96.0;
1396 if (clone_info->density != (char *) NULL)
1397 {
1399 geometry_info;
1400
1401 MagickStatusType
1402 flags;
1403
1404 flags=ParseGeometry(clone_info->density,&geometry_info);
1405 if ((flags & RhoValue) != 0)
1406 resolution.x=geometry_info.rho;
1407 resolution.y=resolution.x;
1408 if ((flags & SigmaValue) != 0)
1409 resolution.y=geometry_info.sigma;
1410 }
1411 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1412 clone_info->stroke_width/2.0;
1413 bounds.x1=0.0;
1414 bounds.y1=0.0;
1415 bounds.x2=0.0;
1416 bounds.y2=0.0;
1417 if (polygon_info != (PolygonInfo *) NULL)
1418 {
1419 bounds=polygon_info->edges[0].bounds;
1420 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1421 {
1422 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1423 bounds.x1=polygon_info->edges[i].bounds.x1;
1424 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1425 bounds.y1=polygon_info->edges[i].bounds.y1;
1426 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1427 bounds.x2=polygon_info->edges[i].bounds.x2;
1428 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1429 bounds.y2=polygon_info->edges[i].bounds.y2;
1430 }
1431 bounds.x1-=mid;
1432 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1433 image->columns ? (double) image->columns-1 : bounds.x1;
1434 bounds.y1-=mid;
1435 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1436 image->rows ? (double) image->rows-1 : bounds.y1;
1437 bounds.x2+=mid;
1438 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1439 image->columns ? (double) image->columns-1 : bounds.x2;
1440 bounds.y2+=mid;
1441 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1442 image->rows ? (double) image->rows-1 : bounds.y2;
1443 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1444 {
1445 if (polygon_info->edges[i].direction != 0)
1446 status=QueryColorDatabase("#f00",&clone_info->stroke,
1447 &image->exception);
1448 else
1449 status=QueryColorDatabase("#0f0",&clone_info->stroke,
1450 &image->exception);
1451 if (status == MagickFalse)
1452 break;
1453 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1454 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1455 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1456 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1457 primitive_info[0].primitive=RectanglePrimitive;
1458 status&=TraceRectangle(primitive_info,start,end);
1459 primitive_info[0].method=ReplaceMethod;
1460 coordinates=(ssize_t) primitive_info[0].coordinates;
1461 primitive_info[coordinates].primitive=UndefinedPrimitive;
1462 status=DrawPrimitive(image,clone_info,primitive_info);
1463 if (status == MagickFalse)
1464 break;
1465 }
1466 if (i < (ssize_t) polygon_info->number_edges)
1467 {
1468 clone_info=DestroyDrawInfo(clone_info);
1469 return(status == 0 ? MagickFalse : MagickTrue);
1470 }
1471 }
1472 status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1473 if (status == MagickFalse)
1474 {
1475 clone_info=DestroyDrawInfo(clone_info);
1476 return(MagickFalse);
1477 }
1478 start.x=(double) (bounds.x1-mid);
1479 start.y=(double) (bounds.y1-mid);
1480 end.x=(double) (bounds.x2+mid);
1481 end.y=(double) (bounds.y2+mid);
1482 primitive_info[0].primitive=RectanglePrimitive;
1483 status&=TraceRectangle(primitive_info,start,end);
1484 primitive_info[0].method=ReplaceMethod;
1485 coordinates=(ssize_t) primitive_info[0].coordinates;
1486 primitive_info[coordinates].primitive=UndefinedPrimitive;
1487 status=DrawPrimitive(image,clone_info,primitive_info);
1488 clone_info=DestroyDrawInfo(clone_info);
1489 return(status == 0 ? MagickFalse : MagickTrue);
1490}
1491
1492/*
1493%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1494% %
1495% %
1496% %
1497% D r a w C l i p P a t h %
1498% %
1499% %
1500% %
1501%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1502%
1503% DrawClipPath() draws the clip path on the image mask.
1504%
1505% The format of the DrawClipPath method is:
1506%
1507% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1508% const char *id)
1509%
1510% A description of each parameter follows:
1511%
1512% o image: the image.
1513%
1514% o draw_info: the draw info.
1515%
1516% o id: the clip path id.
1517%
1518*/
1519MagickExport MagickBooleanType DrawClipPath(Image *image,
1520 const DrawInfo *draw_info,const char *id)
1521{
1522 const char
1523 *clip_path;
1524
1525 Image
1526 *clipping_mask;
1527
1528 MagickBooleanType
1529 status;
1530
1531 clip_path=GetImageArtifact(image,id);
1532 if (clip_path == (const char *) NULL)
1533 return(MagickFalse);
1534 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1535 &image->exception);
1536 if (clipping_mask == (Image *) NULL)
1537 return(MagickFalse);
1538 status=SetImageClipMask(image,clipping_mask);
1539 clipping_mask=DestroyImage(clipping_mask);
1540 return(status);
1541}
1542
1543/*
1544%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1545% %
1546% %
1547% %
1548% D r a w C l i p p i n g M a s k %
1549% %
1550% %
1551% %
1552%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1553%
1554% DrawClippingMask() draws the clip path and returns it as an image clipping
1555% mask.
1556%
1557% The format of the DrawClippingMask method is:
1558%
1559% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1560% const char *id,const char *clip_path,ExceptionInfo *exception)
1561%
1562% A description of each parameter follows:
1563%
1564% o image: the image.
1565%
1566% o draw_info: the draw info.
1567%
1568% o id: the clip path id.
1569%
1570% o clip_path: the clip path.
1571%
1572% o exception: return any errors or warnings in this structure.
1573%
1574*/
1575static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1576 const char *id,const char *clip_path,ExceptionInfo *exception)
1577{
1578 DrawInfo
1579 *clone_info;
1580
1581 Image
1582 *clip_mask;
1583
1584 MagickStatusType
1585 status;
1586
1587 /*
1588 Draw a clip path.
1589 */
1590 assert(image != (Image *) NULL);
1591 assert(image->signature == MagickCoreSignature);
1592 assert(draw_info != (const DrawInfo *) NULL);
1593 if (IsEventLogging() != MagickFalse)
1594 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1595 clip_mask=AcquireImage((const ImageInfo *) NULL);
1596 status=SetImageExtent(clip_mask,image->columns,image->rows);
1597 if (status == MagickFalse)
1598 return(DestroyImage(clip_mask));
1599 status=SetImageClipMask(image,(Image *) NULL);
1600 status=QueryColorCompliance("#0000",AllCompliance,
1601 &clip_mask->background_color,exception);
1602 clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1603 status=SetImageBackgroundColor(clip_mask);
1604 if (draw_info->debug != MagickFalse)
1605 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1606 id);
1607 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1608 (void) CloneString(&clone_info->primitive,clip_path);
1609 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1610 exception);
1611 if (clone_info->clip_mask != (char *) NULL)
1612 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1613 (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1614 exception);
1615 clone_info->stroke_width=0.0;
1616 clone_info->opacity=OpaqueOpacity;
1617 clone_info->clip_path=MagickTrue;
1618 status=RenderMVGContent(clip_mask,clone_info,0);
1619 clone_info=DestroyDrawInfo(clone_info);
1620 status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1621 if (draw_info->compliance != SVGCompliance)
1622 status&=NegateImage(clip_mask,MagickFalse);
1623 if (status == MagickFalse)
1624 clip_mask=DestroyImage(clip_mask);
1625 if (draw_info->debug != MagickFalse)
1626 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1627 return(clip_mask);
1628}
1629
1630/*
1631%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1632% %
1633% %
1634% %
1635% D r a w C o m p o s i t e M a s k %
1636% %
1637% %
1638% %
1639%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1640%
1641% DrawCompositeMask() draws the mask path and returns it as an image mask.
1642%
1643% The format of the DrawCompositeMask method is:
1644%
1645% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1646% const char *id,const char *mask_path,ExceptionInfo *exception)
1647%
1648% A description of each parameter follows:
1649%
1650% o image: the image.
1651%
1652% o draw_info: the draw info.
1653%
1654% o id: the mask path id.
1655%
1656% o mask_path: the mask path.
1657%
1658% o exception: return any errors or warnings in this structure.
1659%
1660*/
1661static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1662 const char *id,const char *mask_path,ExceptionInfo *exception)
1663{
1664 Image
1665 *composite_mask;
1666
1667 DrawInfo
1668 *clone_info;
1669
1670 MagickStatusType
1671 status;
1672
1673 /*
1674 Draw a mask path.
1675 */
1676 assert(image != (Image *) NULL);
1677 assert(image->signature == MagickCoreSignature);
1678 assert(draw_info != (const DrawInfo *) NULL);
1679 if (IsEventLogging() != MagickFalse)
1680 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1681 composite_mask=AcquireImage((const ImageInfo *) NULL);
1682 status=SetImageExtent(composite_mask,image->columns,image->rows);
1683 if (status == MagickFalse)
1684 return(DestroyImage(composite_mask));
1685 status=SetImageMask(image,(Image *) NULL);
1686 status=QueryColorCompliance("#0000",AllCompliance,
1687 &composite_mask->background_color,exception);
1688 composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1689 (void) SetImageBackgroundColor(composite_mask);
1690 if (draw_info->debug != MagickFalse)
1691 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1692 id);
1693 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1694 (void) CloneString(&clone_info->primitive,mask_path);
1695 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1696 exception);
1697 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1698 exception);
1699 clone_info->stroke_width=0.0;
1700 clone_info->opacity=OpaqueOpacity;
1701 status=RenderMVGContent(composite_mask,clone_info,0);
1702 clone_info=DestroyDrawInfo(clone_info);
1703 status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1704 status&=NegateImage(composite_mask,MagickFalse);
1705 if (status == MagickFalse)
1706 composite_mask=DestroyImage(composite_mask);
1707 if (draw_info->debug != MagickFalse)
1708 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1709 return(composite_mask);
1710}
1711
1712/*
1713%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1714% %
1715% %
1716% %
1717+ D r a w D a s h P o l y g o n %
1718% %
1719% %
1720% %
1721%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1722%
1723% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1724% image while respecting the dash offset and dash pattern attributes.
1725%
1726% The format of the DrawDashPolygon method is:
1727%
1728% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1729% const PrimitiveInfo *primitive_info,Image *image)
1730%
1731% A description of each parameter follows:
1732%
1733% o draw_info: the draw info.
1734%
1735% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1736%
1737% o image: the image.
1738%
1739%
1740*/
1741static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1742 const PrimitiveInfo *primitive_info,Image *image)
1743{
1744 double
1745 dx,
1746 dy,
1747 length,
1748 maximum_length,
1749 offset,
1750 scale,
1751 total_length;
1752
1753 DrawInfo
1754 *clone_info;
1755
1756 MagickStatusType
1757 status;
1758
1760 *dash_polygon;
1761
1762 ssize_t
1763 i;
1764
1765 size_t
1766 number_vertices;
1767
1768 ssize_t
1769 j,
1770 n;
1771
1772 assert(draw_info != (const DrawInfo *) NULL);
1773 if (draw_info->debug != MagickFalse)
1774 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1775 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1776 number_vertices=(size_t) i;
1777 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1778 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1779 if (dash_polygon == (PrimitiveInfo *) NULL)
1780 {
1781 (void) ThrowMagickException(&image->exception,GetMagickModule(),
1782 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1783 return(MagickFalse);
1784 }
1785 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1786 sizeof(*dash_polygon));
1787 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1788 clone_info->miterlimit=0;
1789 dash_polygon[0]=primitive_info[0];
1790 scale=ExpandAffine(&draw_info->affine);
1791 length=scale*draw_info->dash_pattern[0];
1792 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1793 scale*draw_info->dash_offset : 0.0;
1794 j=1;
1795 for (n=0; offset > 0.0; j=0)
1796 {
1797 if (draw_info->dash_pattern[n] <= 0.0)
1798 break;
1799 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1800 if (offset > length)
1801 {
1802 offset-=length;
1803 n++;
1804 length=scale*draw_info->dash_pattern[n];
1805 continue;
1806 }
1807 if (offset < length)
1808 {
1809 length-=offset;
1810 offset=0.0;
1811 break;
1812 }
1813 offset=0.0;
1814 n++;
1815 }
1816 status=MagickTrue;
1817 maximum_length=0.0;
1818 total_length=0.0;
1819 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1820 {
1821 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1822 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1823 maximum_length=hypot(dx,dy);
1824 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1825 continue;
1826 if (fabs(length) < MagickEpsilon)
1827 {
1828 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1829 n++;
1830 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1831 n=0;
1832 length=scale*draw_info->dash_pattern[n];
1833 }
1834 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1835 {
1836 total_length+=length;
1837 if ((n & 0x01) != 0)
1838 {
1839 dash_polygon[0]=primitive_info[0];
1840 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1841 total_length*PerceptibleReciprocal(maximum_length));
1842 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1843 total_length*PerceptibleReciprocal(maximum_length));
1844 j=1;
1845 }
1846 else
1847 {
1848 if ((j+1) > (ssize_t) number_vertices)
1849 break;
1850 dash_polygon[j]=primitive_info[i-1];
1851 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1852 total_length*PerceptibleReciprocal(maximum_length));
1853 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1854 total_length*PerceptibleReciprocal(maximum_length));
1855 dash_polygon[j].coordinates=1;
1856 j++;
1857 dash_polygon[0].coordinates=(size_t) j;
1858 dash_polygon[j].primitive=UndefinedPrimitive;
1859 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1860 if (status == MagickFalse)
1861 break;
1862 }
1863 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1864 n++;
1865 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1866 n=0;
1867 length=scale*draw_info->dash_pattern[n];
1868 }
1869 length-=(maximum_length-total_length);
1870 if ((n & 0x01) != 0)
1871 continue;
1872 dash_polygon[j]=primitive_info[i];
1873 dash_polygon[j].coordinates=1;
1874 j++;
1875 }
1876 if ((status != MagickFalse) && (total_length < maximum_length) &&
1877 ((n & 0x01) == 0) && (j > 1))
1878 {
1879 dash_polygon[j]=primitive_info[i-1];
1880 dash_polygon[j].point.x+=MagickEpsilon;
1881 dash_polygon[j].point.y+=MagickEpsilon;
1882 dash_polygon[j].coordinates=1;
1883 j++;
1884 dash_polygon[0].coordinates=(size_t) j;
1885 dash_polygon[j].primitive=UndefinedPrimitive;
1886 status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1887 }
1888 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1889 clone_info=DestroyDrawInfo(clone_info);
1890 if (draw_info->debug != MagickFalse)
1891 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1892 return(status != 0 ? MagickTrue : MagickFalse);
1893}
1894
1895/*
1896%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1897% %
1898% %
1899% %
1900% D r a w G r a d i e n t I m a g e %
1901% %
1902% %
1903% %
1904%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1905%
1906% DrawGradientImage() draws a linear gradient on the image.
1907%
1908% The format of the DrawGradientImage method is:
1909%
1910% MagickBooleanType DrawGradientImage(Image *image,
1911% const DrawInfo *draw_info)
1912%
1913% A description of each parameter follows:
1914%
1915% o image: the image.
1916%
1917% o draw_info: the draw info.
1918%
1919*/
1920
1921static inline double GetStopColorOffset(const GradientInfo *gradient,
1922 const ssize_t x,const ssize_t y)
1923{
1924 switch (gradient->type)
1925 {
1926 case UndefinedGradient:
1927 case LinearGradient:
1928 {
1929 double
1930 gamma,
1931 length,
1932 offset,
1933 scale;
1934
1935 PointInfo
1936 p,
1937 q;
1938
1939 const SegmentInfo
1940 *gradient_vector;
1941
1942 gradient_vector=(&gradient->gradient_vector);
1943 p.x=gradient_vector->x2-gradient_vector->x1;
1944 p.y=gradient_vector->y2-gradient_vector->y1;
1945 q.x=(double) x-gradient_vector->x1;
1946 q.y=(double) y-gradient_vector->y1;
1947 length=sqrt(q.x*q.x+q.y*q.y);
1948 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1949 gamma=PerceptibleReciprocal(gamma);
1950 scale=p.x*q.x+p.y*q.y;
1951 offset=gamma*scale*length;
1952 return(offset);
1953 }
1954 case RadialGradient:
1955 {
1956 PointInfo
1957 v;
1958
1959 if (gradient->spread == RepeatSpread)
1960 {
1961 v.x=(double) x-gradient->center.x;
1962 v.y=(double) y-gradient->center.y;
1963 return(sqrt(v.x*v.x+v.y*v.y));
1964 }
1965 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1966 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1967 gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1968 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1969 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1970 gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1971 return(sqrt(v.x*v.x+v.y*v.y));
1972 }
1973 }
1974 return(0.0);
1975}
1976
1977MagickExport MagickBooleanType DrawGradientImage(Image *image,
1978 const DrawInfo *draw_info)
1979{
1980 CacheView
1981 *image_view;
1982
1983 const GradientInfo
1984 *gradient;
1985
1986 const SegmentInfo
1987 *gradient_vector;
1988
1989 double
1990 length;
1991
1993 *exception;
1994
1995 MagickBooleanType
1996 status;
1997
1999 zero;
2000
2001 PointInfo
2002 point;
2003
2005 bounding_box;
2006
2007 ssize_t
2008 y;
2009
2010 /*
2011 Draw linear or radial gradient on image.
2012 */
2013 assert(image != (Image *) NULL);
2014 assert(image->signature == MagickCoreSignature);
2015 assert(draw_info != (const DrawInfo *) NULL);
2016 if (IsEventLogging() != MagickFalse)
2017 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2018 gradient=(&draw_info->gradient);
2019 gradient_vector=(&gradient->gradient_vector);
2020 point.x=gradient_vector->x2-gradient_vector->x1;
2021 point.y=gradient_vector->y2-gradient_vector->y1;
2022 length=sqrt(point.x*point.x+point.y*point.y);
2023 bounding_box=gradient->bounding_box;
2024 status=MagickTrue;
2025 exception=(&image->exception);
2026 GetMagickPixelPacket(image,&zero);
2027 image_view=AcquireAuthenticCacheView(image,exception);
2028#if defined(MAGICKCORE_OPENMP_SUPPORT)
2029 #pragma omp parallel for schedule(static) shared(status) \
2030 magick_number_threads(image,image,bounding_box.height-bounding_box.y,2)
2031#endif
2032 for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++)
2033 {
2034 double
2035 alpha,
2036 offset;
2037
2039 composite,
2040 pixel;
2041
2042 IndexPacket
2043 *magick_restrict indexes;
2044
2045 ssize_t
2046 i,
2047 x;
2048
2050 *magick_restrict q;
2051
2052 ssize_t
2053 j;
2054
2055 if (status == MagickFalse)
2056 continue;
2057 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2058 if (q == (PixelPacket *) NULL)
2059 {
2060 status=MagickFalse;
2061 continue;
2062 }
2063 indexes=GetCacheViewAuthenticIndexQueue(image_view);
2064 pixel=zero;
2065 composite=zero;
2066 offset=GetStopColorOffset(gradient,0,y);
2067 if (gradient->type != RadialGradient)
2068 offset*=PerceptibleReciprocal(length);
2069 for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
2070 {
2071 SetMagickPixelPacket(image,q,indexes+x,&pixel);
2072 switch (gradient->spread)
2073 {
2074 case UndefinedSpread:
2075 case PadSpread:
2076 {
2077 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2078 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2079 {
2080 offset=GetStopColorOffset(gradient,x,y);
2081 if (gradient->type != RadialGradient)
2082 offset*=PerceptibleReciprocal(length);
2083 }
2084 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2085 if (offset < gradient->stops[i].offset)
2086 break;
2087 if ((offset < 0.0) || (i == 0))
2088 composite=gradient->stops[0].color;
2089 else
2090 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2091 composite=gradient->stops[gradient->number_stops-1].color;
2092 else
2093 {
2094 j=i;
2095 i--;
2096 alpha=(offset-gradient->stops[i].offset)/
2097 (gradient->stops[j].offset-gradient->stops[i].offset);
2098 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2099 &gradient->stops[j].color,alpha,&composite);
2100 }
2101 break;
2102 }
2103 case ReflectSpread:
2104 {
2105 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2106 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2107 {
2108 offset=GetStopColorOffset(gradient,x,y);
2109 if (gradient->type != RadialGradient)
2110 offset*=PerceptibleReciprocal(length);
2111 }
2112 if (offset < 0.0)
2113 offset=(-offset);
2114 if ((ssize_t) fmod(offset,2.0) == 0)
2115 offset=fmod(offset,1.0);
2116 else
2117 offset=1.0-fmod(offset,1.0);
2118 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2119 if (offset < gradient->stops[i].offset)
2120 break;
2121 if (i == 0)
2122 composite=gradient->stops[0].color;
2123 else
2124 if (i == (ssize_t) gradient->number_stops)
2125 composite=gradient->stops[gradient->number_stops-1].color;
2126 else
2127 {
2128 j=i;
2129 i--;
2130 alpha=(offset-gradient->stops[i].offset)/
2131 (gradient->stops[j].offset-gradient->stops[i].offset);
2132 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2133 &gradient->stops[j].color,alpha,&composite);
2134 }
2135 break;
2136 }
2137 case RepeatSpread:
2138 {
2139 double
2140 repeat;
2141
2142 MagickBooleanType
2143 antialias;
2144
2145 antialias=MagickFalse;
2146 repeat=0.0;
2147 if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2148 (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2149 {
2150 offset=GetStopColorOffset(gradient,x,y);
2151 if (gradient->type == LinearGradient)
2152 {
2153 repeat=fmod(offset,length);
2154 if (repeat < 0.0)
2155 repeat=length-fmod(-repeat,length);
2156 else
2157 repeat=fmod(offset,length);
2158 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2159 MagickTrue : MagickFalse;
2160 offset=PerceptibleReciprocal(length)*repeat;
2161 }
2162 else
2163 {
2164 repeat=fmod(offset,(double) gradient->radius);
2165 if (repeat < 0.0)
2166 repeat=gradient->radius-fmod(-repeat,
2167 (double) gradient->radius);
2168 else
2169 repeat=fmod(offset,(double) gradient->radius);
2170 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2171 MagickFalse;
2172 offset=repeat*PerceptibleReciprocal(gradient->radius);
2173 }
2174 }
2175 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2176 if (offset < gradient->stops[i].offset)
2177 break;
2178 if (i == 0)
2179 composite=gradient->stops[0].color;
2180 else
2181 if (i == (ssize_t) gradient->number_stops)
2182 composite=gradient->stops[gradient->number_stops-1].color;
2183 else
2184 {
2185 j=i;
2186 i--;
2187 alpha=(offset-gradient->stops[i].offset)/
2188 (gradient->stops[j].offset-gradient->stops[i].offset);
2189 if (antialias != MagickFalse)
2190 {
2191 if (gradient->type == LinearGradient)
2192 alpha=length-repeat;
2193 else
2194 alpha=gradient->radius-repeat;
2195 i=0;
2196 j=(ssize_t) gradient->number_stops-1L;
2197 }
2198 MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2199 &gradient->stops[j].color,alpha,&composite);
2200 }
2201 break;
2202 }
2203 }
2204 MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2205 pixel.opacity,&pixel);
2206 SetPixelPacket(image,&pixel,q,indexes+x);
2207 q++;
2208 }
2209 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2210 status=MagickFalse;
2211 }
2212 image_view=DestroyCacheView(image_view);
2213 return(status);
2214}
2215
2216/*
2217%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2218% %
2219% %
2220% %
2221% D r a w I m a g e %
2222% %
2223% %
2224% %
2225%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2226%
2227% DrawImage() draws a graphic primitive on your image. The primitive
2228% may be represented as a string or filename. Precede the filename with an
2229% "at" sign (@) and the contents of the file are drawn on the image. You
2230% can affect how text is drawn by setting one or more members of the draw
2231% info structure.
2232%
2233% The format of the DrawImage method is:
2234%
2235% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2236%
2237% A description of each parameter follows:
2238%
2239% o image: the image.
2240%
2241% o draw_info: the draw info.
2242%
2243*/
2244
2245static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2246 const double pad)
2247{
2248 char
2249 **text = (char **) NULL;
2250
2251 double
2252 extent;
2253
2254 size_t
2255 quantum;
2256
2257 ssize_t
2258 i;
2259
2260 /*
2261 Check if there is enough storage for drawing primitives.
2262 */
2263 quantum=sizeof(**mvg_info->primitive_info);
2264 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2265 if (extent <= (double) *mvg_info->extent)
2266 return(MagickTrue);
2267 if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2268 return(MagickFalse);
2269 if (mvg_info->offset > 0)
2270 {
2271 text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2272 if (text == (char **) NULL)
2273 return(MagickFalse);
2274 for (i=0; i < mvg_info->offset; i++)
2275 text[i]=(*mvg_info->primitive_info)[i].text;
2276 }
2277 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2278 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2279 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2280 {
2281 if (text != (char **) NULL)
2282 text=(char **) RelinquishMagickMemory(text);
2283 *mvg_info->extent=(size_t) extent;
2284 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2285 {
2286 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2287 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2288 }
2289 return(MagickTrue);
2290 }
2291 /*
2292 Reallocation failed, allocate a primitive to facilitate unwinding.
2293 */
2294 if (text != (char **) NULL)
2295 {
2296 for (i=0; i < mvg_info->offset; i++)
2297 if (text[i] != (char *) NULL)
2298 text[i]=DestroyString(text[i]);
2299 text=(char **) RelinquishMagickMemory(text);
2300 }
2301 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2302 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2303 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2304 (PrimitiveExtentPad+1)*quantum);
2305 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2306 quantum));
2307 *mvg_info->extent=1;
2308 mvg_info->offset=0;
2309 return(MagickFalse);
2310}
2311
2312static inline double GetDrawValue(const char *magick_restrict string,
2313 char **magick_restrict sentinel)
2314{
2315 char
2316 **magick_restrict q;
2317
2318 double
2319 value;
2320
2321 q=sentinel;
2322 value=InterpretLocaleValue(string,q);
2323 sentinel=q;
2324 return(value);
2325}
2326
2327static int MVGMacroCompare(const void *target,const void *source)
2328{
2329 const char
2330 *p,
2331 *q;
2332
2333 p=(const char *) target;
2334 q=(const char *) source;
2335 return(strcmp(p,q));
2336}
2337
2338static SplayTreeInfo *GetMVGMacros(const char *primitive)
2339{
2340 char
2341 *macro,
2342 *token;
2343
2344 const char
2345 *q;
2346
2347 size_t
2348 extent;
2349
2351 *macros;
2352
2353 /*
2354 Scan graphic primitives for definitions and classes.
2355 */
2356 if (primitive == (const char *) NULL)
2357 return((SplayTreeInfo *) NULL);
2358 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2359 RelinquishMagickMemory);
2360 macro=AcquireString(primitive);
2361 token=AcquireString(primitive);
2362 extent=strlen(token)+MagickPathExtent;
2363 for (q=primitive; *q != '\0'; )
2364 {
2365 if (GetNextToken(q,&q,extent,token) < 1)
2366 break;
2367 if (*token == '\0')
2368 break;
2369 if (LocaleCompare("push",token) == 0)
2370 {
2371 const char
2372 *end,
2373 *start;
2374
2375 (void) GetNextToken(q,&q,extent,token);
2376 if (*q == '"')
2377 {
2378 char
2379 name[MagickPathExtent];
2380
2381 const char
2382 *p;
2383
2384 ssize_t
2385 n;
2386
2387 /*
2388 Named macro (e.g. push graphic-context "wheel").
2389 */
2390 (void) GetNextToken(q,&q,extent,token);
2391 start=q;
2392 end=q;
2393 (void) CopyMagickString(name,token,MagickPathExtent);
2394 n=1;
2395 for (p=q; *p != '\0'; )
2396 {
2397 if (GetNextToken(p,&p,extent,token) < 1)
2398 break;
2399 if (*token == '\0')
2400 break;
2401 if (LocaleCompare(token,"pop") == 0)
2402 {
2403 end=p-strlen(token)-1;
2404 n--;
2405 }
2406 if (LocaleCompare(token,"push") == 0)
2407 n++;
2408 if ((n == 0) && (end > start))
2409 {
2410 /*
2411 Extract macro.
2412 */
2413 (void) GetNextToken(p,&p,extent,token);
2414 (void) CopyMagickString(macro,start,(size_t) (end-start));
2415 (void) AddValueToSplayTree(macros,ConstantString(name),
2416 ConstantString(macro));
2417 break;
2418 }
2419 }
2420 }
2421 }
2422 }
2423 token=DestroyString(token);
2424 macro=DestroyString(macro);
2425 return(macros);
2426}
2427
2428static inline MagickBooleanType IsPoint(const char *point)
2429{
2430 char
2431 *p;
2432
2433 double
2434 value;
2435
2436 value=GetDrawValue(point,&p);
2437 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2438 MagickTrue);
2439}
2440
2441static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2442 const PointInfo point)
2443{
2444 primitive_info->coordinates=1;
2445 primitive_info->closed_subpath=MagickFalse;
2446 primitive_info->point=point;
2447 return(MagickTrue);
2448}
2449
2450static MagickBooleanType RenderMVGContent(Image *image,
2451 const DrawInfo *draw_info,const size_t depth)
2452{
2453#define RenderImageTag "Render/Image"
2454
2456 affine,
2457 current;
2458
2459 char
2460 key[2*MaxTextExtent],
2461 keyword[MaxTextExtent],
2462 geometry[MaxTextExtent],
2463 name[MaxTextExtent],
2464 *next_token,
2465 pattern[MaxTextExtent],
2466 *primitive,
2467 *token;
2468
2469 const char
2470 *q;
2471
2472 double
2473 angle,
2474 coordinates,
2475 cursor,
2476 factor,
2477 primitive_extent;
2478
2479 DrawInfo
2480 *clone_info,
2481 **graphic_context;
2482
2483 MagickBooleanType
2484 proceed;
2485
2486 MagickStatusType
2487 status;
2488
2489 MVGInfo
2490 mvg_info;
2491
2492 PointInfo
2493 point;
2494
2496 start_color;
2497
2499 *primitive_info;
2500
2501 PrimitiveType
2502 primitive_type;
2503
2504 const char
2505 *p;
2506
2507 ssize_t
2508 i,
2509 x;
2510
2512 bounds;
2513
2514 size_t
2515 extent,
2516 number_points;
2517
2519 *macros;
2520
2521 ssize_t
2522 defsDepth,
2523 j,
2524 k,
2525 n,
2526 symbolDepth;
2527
2529 metrics;
2530
2531 assert(image != (Image *) NULL);
2532 assert(image->signature == MagickCoreSignature);
2533 assert(draw_info != (DrawInfo *) NULL);
2534 assert(draw_info->signature == MagickCoreSignature);
2535 if (IsEventLogging() != MagickFalse)
2536 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2537 if (depth > MagickMaxRecursionDepth)
2538 ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2539 image->filename);
2540 if ((draw_info->primitive == (char *) NULL) ||
2541 (*draw_info->primitive == '\0'))
2542 return(MagickFalse);
2543 if (draw_info->debug != MagickFalse)
2544 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2545 if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2546 return(MagickFalse);
2547 if (image->matte == MagickFalse)
2548 {
2549 status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2550 if (status == MagickFalse)
2551 return(MagickFalse);
2552 }
2553 primitive=(char *) NULL;
2554 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2555 (*(draw_info->primitive+1) != '-') && (depth == 0))
2556 primitive=FileToString(draw_info->primitive,~0UL,&image->exception);
2557 else
2558 primitive=AcquireString(draw_info->primitive);
2559 if (primitive == (char *) NULL)
2560 return(MagickFalse);
2561 primitive_extent=(double) strlen(primitive);
2562 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2563 n=0;
2564 /*
2565 Allocate primitive info memory.
2566 */
2567 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2568 if (graphic_context == (DrawInfo **) NULL)
2569 {
2570 primitive=DestroyString(primitive);
2571 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2572 image->filename);
2573 }
2574 number_points=(size_t) PrimitiveExtentPad;
2575 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2576 (number_points+1),sizeof(*primitive_info));
2577 if (primitive_info == (PrimitiveInfo *) NULL)
2578 {
2579 primitive=DestroyString(primitive);
2580 for ( ; n >= 0; n--)
2581 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2582 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2583 ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2584 image->filename);
2585 }
2586 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2587 sizeof(*primitive_info));
2588 (void) memset(&mvg_info,0,sizeof(mvg_info));
2589 mvg_info.primitive_info=(&primitive_info);
2590 mvg_info.extent=(&number_points);
2591 mvg_info.exception=(&image->exception);
2592 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2593 graphic_context[n]->viewbox=image->page;
2594 if ((image->page.width == 0) || (image->page.height == 0))
2595 {
2596 graphic_context[n]->viewbox.width=image->columns;
2597 graphic_context[n]->viewbox.height=image->rows;
2598 }
2599 token=AcquireString(primitive);
2600 extent=strlen(token)+MaxTextExtent;
2601 cursor=0.0;
2602 defsDepth=0;
2603 symbolDepth=0;
2604 macros=GetMVGMacros(primitive);
2605 status=QueryColorDatabase("#000000",&start_color,&image->exception);
2606 for (q=primitive; *q != '\0'; )
2607 {
2608 /*
2609 Interpret graphic primitive.
2610 */
2611 if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2612 break;
2613 if (*keyword == '\0')
2614 break;
2615 if (*keyword == '#')
2616 {
2617 /*
2618 Comment.
2619 */
2620 while ((*q != '\n') && (*q != '\0'))
2621 q++;
2622 continue;
2623 }
2624 p=q-strlen(keyword)-1;
2625 primitive_type=UndefinedPrimitive;
2626 current=graphic_context[n]->affine;
2627 GetAffineMatrix(&affine);
2628 *token='\0';
2629 switch (*keyword)
2630 {
2631 case ';':
2632 break;
2633 case 'a':
2634 case 'A':
2635 {
2636 if (LocaleCompare("affine",keyword) == 0)
2637 {
2638 (void) GetNextToken(q,&q,extent,token);
2639 affine.sx=GetDrawValue(token,&next_token);
2640 if (token == next_token)
2641 ThrowPointExpectedException(image,token);
2642 (void) GetNextToken(q,&q,extent,token);
2643 if (*token == ',')
2644 (void) GetNextToken(q,&q,extent,token);
2645 affine.rx=GetDrawValue(token,&next_token);
2646 if (token == next_token)
2647 ThrowPointExpectedException(image,token);
2648 (void) GetNextToken(q,&q,extent,token);
2649 if (*token == ',')
2650 (void) GetNextToken(q,&q,extent,token);
2651 affine.ry=GetDrawValue(token,&next_token);
2652 if (token == next_token)
2653 ThrowPointExpectedException(image,token);
2654 (void) GetNextToken(q,&q,extent,token);
2655 if (*token == ',')
2656 (void) GetNextToken(q,&q,extent,token);
2657 affine.sy=GetDrawValue(token,&next_token);
2658 if (token == next_token)
2659 ThrowPointExpectedException(image,token);
2660 (void) GetNextToken(q,&q,extent,token);
2661 if (*token == ',')
2662 (void) GetNextToken(q,&q,extent,token);
2663 affine.tx=GetDrawValue(token,&next_token);
2664 if (token == next_token)
2665 ThrowPointExpectedException(image,token);
2666 (void) GetNextToken(q,&q,extent,token);
2667 if (*token == ',')
2668 (void) GetNextToken(q,&q,extent,token);
2669 affine.ty=GetDrawValue(token,&next_token);
2670 if (token == next_token)
2671 ThrowPointExpectedException(image,token);
2672 break;
2673 }
2674 if (LocaleCompare("arc",keyword) == 0)
2675 {
2676 primitive_type=ArcPrimitive;
2677 break;
2678 }
2679 status=MagickFalse;
2680 break;
2681 }
2682 case 'b':
2683 case 'B':
2684 {
2685 if (LocaleCompare("bezier",keyword) == 0)
2686 {
2687 primitive_type=BezierPrimitive;
2688 break;
2689 }
2690 if (LocaleCompare("border-color",keyword) == 0)
2691 {
2692 (void) GetNextToken(q,&q,extent,token);
2693 status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2694 &image->exception);
2695 break;
2696 }
2697 status=MagickFalse;
2698 break;
2699 }
2700 case 'c':
2701 case 'C':
2702 {
2703 if (LocaleCompare("class",keyword) == 0)
2704 {
2705 const char
2706 *mvg_class;
2707
2708 (void) GetNextToken(q,&q,extent,token);
2709 if ((*token == '\0') || (*token == ';'))
2710 {
2711 status=MagickFalse;
2712 break;
2713 }
2714 if (LocaleCompare(token,graphic_context[n]->id) == 0)
2715 break;
2716 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2717 if ((graphic_context[n]->render != MagickFalse) &&
2718 (mvg_class != (const char *) NULL) && (p > primitive))
2719 {
2720 char
2721 *elements;
2722
2723 ssize_t
2724 offset;
2725
2726 /*
2727 Inject class elements in stream.
2728 */
2729 offset=(ssize_t) (p-primitive);
2730 elements=AcquireString(primitive);
2731 elements[offset]='\0';
2732 (void) ConcatenateString(&elements,mvg_class);
2733 (void) ConcatenateString(&elements,"\n");
2734 (void) ConcatenateString(&elements,q);
2735 primitive=DestroyString(primitive);
2736 primitive=elements;
2737 q=primitive+offset;
2738 }
2739 break;
2740 }
2741 if (LocaleCompare("clip-path",keyword) == 0)
2742 {
2743 const char
2744 *clip_path;
2745
2746 /*
2747 Take a node from within the MVG document, and duplicate it here.
2748 */
2749 (void) GetNextToken(q,&q,extent,token);
2750 if (*token == '\0')
2751 {
2752 status=MagickFalse;
2753 break;
2754 }
2755 (void) CloneString(&graphic_context[n]->clip_mask,token);
2756 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2757 if (clip_path != (const char *) NULL)
2758 {
2759 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2760 graphic_context[n]->clipping_mask=
2761 DestroyImage(graphic_context[n]->clipping_mask);
2762 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2763 graphic_context[n],token,clip_path,&image->exception);
2764 if (graphic_context[n]->compliance != SVGCompliance)
2765 {
2766 const char
2767 *clip_path;
2768
2769 clip_path=(const char *) GetValueFromSplayTree(macros,
2770 graphic_context[n]->clip_mask);
2771 if (clip_path != (const char *) NULL)
2772 (void) SetImageArtifact(image,
2773 graphic_context[n]->clip_mask,clip_path);
2774 status&=DrawClipPath(image,graphic_context[n],
2775 graphic_context[n]->clip_mask);
2776 }
2777 }
2778 break;
2779 }
2780 if (LocaleCompare("clip-rule",keyword) == 0)
2781 {
2782 ssize_t
2783 fill_rule;
2784
2785 (void) GetNextToken(q,&q,extent,token);
2786 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2787 token);
2788 if (fill_rule == -1)
2789 {
2790 status=MagickFalse;
2791 break;
2792 }
2793 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2794 break;
2795 }
2796 if (LocaleCompare("clip-units",keyword) == 0)
2797 {
2798 ssize_t
2799 clip_units;
2800
2801 (void) GetNextToken(q,&q,extent,token);
2802 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2803 token);
2804 if (clip_units == -1)
2805 {
2806 status=MagickFalse;
2807 break;
2808 }
2809 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2810 if (clip_units == ObjectBoundingBox)
2811 {
2812 GetAffineMatrix(&current);
2813 affine.sx=draw_info->bounds.x2;
2814 affine.sy=draw_info->bounds.y2;
2815 affine.tx=draw_info->bounds.x1;
2816 affine.ty=draw_info->bounds.y1;
2817 break;
2818 }
2819 break;
2820 }
2821 if (LocaleCompare("circle",keyword) == 0)
2822 {
2823 primitive_type=CirclePrimitive;
2824 break;
2825 }
2826 if (LocaleCompare("color",keyword) == 0)
2827 {
2828 primitive_type=ColorPrimitive;
2829 break;
2830 }
2831 if (LocaleCompare("compliance",keyword) == 0)
2832 {
2833 /*
2834 MVG compliance associates a clipping mask with an image; SVG
2835 compliance associates a clipping mask with a graphics context.
2836 */
2837 (void) GetNextToken(q,&q,extent,token);
2838 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2839 MagickComplianceOptions,MagickFalse,token);
2840 break;
2841 }
2842 if (LocaleCompare("currentColor",keyword) == 0)
2843 {
2844 (void) GetNextToken(q,&q,extent,token);
2845 break;
2846 }
2847 status=MagickFalse;
2848 break;
2849 }
2850 case 'd':
2851 case 'D':
2852 {
2853 if (LocaleCompare("decorate",keyword) == 0)
2854 {
2855 ssize_t
2856 decorate;
2857
2858 (void) GetNextToken(q,&q,extent,token);
2859 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2860 token);
2861 if (decorate == -1)
2862 {
2863 status=MagickFalse;
2864 break;
2865 }
2866 graphic_context[n]->decorate=(DecorationType) decorate;
2867 break;
2868 }
2869 if (LocaleCompare("density",keyword) == 0)
2870 {
2871 (void) GetNextToken(q,&q,extent,token);
2872 (void) CloneString(&graphic_context[n]->density,token);
2873 break;
2874 }
2875 if (LocaleCompare("direction",keyword) == 0)
2876 {
2877 ssize_t
2878 direction;
2879
2880 (void) GetNextToken(q,&q,extent,token);
2881 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2882 token);
2883 if (direction == -1)
2884 status=MagickFalse;
2885 else
2886 graphic_context[n]->direction=(DirectionType) direction;
2887 break;
2888 }
2889 status=MagickFalse;
2890 break;
2891 }
2892 case 'e':
2893 case 'E':
2894 {
2895 if (LocaleCompare("ellipse",keyword) == 0)
2896 {
2897 primitive_type=EllipsePrimitive;
2898 break;
2899 }
2900 if (LocaleCompare("encoding",keyword) == 0)
2901 {
2902 (void) GetNextToken(q,&q,extent,token);
2903 (void) CloneString(&graphic_context[n]->encoding,token);
2904 break;
2905 }
2906 status=MagickFalse;
2907 break;
2908 }
2909 case 'f':
2910 case 'F':
2911 {
2912 if (LocaleCompare("fill",keyword) == 0)
2913 {
2914 const char
2915 *mvg_class;
2916
2917 (void) GetNextToken(q,&q,extent,token);
2918 if (graphic_context[n]->clip_path != MagickFalse)
2919 break;
2920 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2921 if (mvg_class != (const char *) NULL)
2922 {
2923 (void) DrawPatternPath(image,draw_info,mvg_class,
2924 &graphic_context[n]->fill_pattern);
2925 break;
2926 }
2927 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2928 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2929 {
2930 (void) DrawPatternPath(image,draw_info,token,
2931 &graphic_context[n]->fill_pattern);
2932 break;
2933 }
2934 status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2935 &image->exception);
2936 if (graphic_context[n]->fill_opacity != (double) OpaqueOpacity)
2937 graphic_context[n]->fill.opacity=ClampToQuantum(
2938 graphic_context[n]->fill_opacity);
2939 break;
2940 }
2941 if (LocaleCompare("fill-opacity",keyword) == 0)
2942 {
2943 double
2944 opacity;
2945
2946 (void) GetNextToken(q,&q,extent,token);
2947 if (graphic_context[n]->clip_path != MagickFalse)
2948 break;
2949 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2950 opacity=MagickMin(MagickMax(factor*
2951 GetDrawValue(token,&next_token),0.0),1.0);
2952 if (token == next_token)
2953 ThrowPointExpectedException(image,token);
2954 if (graphic_context[n]->compliance == SVGCompliance)
2955 graphic_context[n]->fill_opacity*=(1.0-opacity);
2956 else
2957 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
2958 graphic_context[n]->fill_opacity)*(1.0-opacity);
2959 if (graphic_context[n]->fill.opacity != TransparentOpacity)
2960 graphic_context[n]->fill.opacity=(Quantum)
2961 graphic_context[n]->fill_opacity;
2962 else
2963 graphic_context[n]->fill.opacity=ClampToQuantum((MagickRealType)
2964 QuantumRange*(1.0-opacity));
2965 break;
2966 }
2967 if (LocaleCompare("fill-rule",keyword) == 0)
2968 {
2969 ssize_t
2970 fill_rule;
2971
2972 (void) GetNextToken(q,&q,extent,token);
2973 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2974 token);
2975 if (fill_rule == -1)
2976 {
2977 status=MagickFalse;
2978 break;
2979 }
2980 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2981 break;
2982 }
2983 if (LocaleCompare("font",keyword) == 0)
2984 {
2985 (void) GetNextToken(q,&q,extent,token);
2986 (void) CloneString(&graphic_context[n]->font,token);
2987 if (LocaleCompare("none",token) == 0)
2988 graphic_context[n]->font=(char *) RelinquishMagickMemory(
2989 graphic_context[n]->font);
2990 break;
2991 }
2992 if (LocaleCompare("font-family",keyword) == 0)
2993 {
2994 (void) GetNextToken(q,&q,extent,token);
2995 (void) CloneString(&graphic_context[n]->family,token);
2996 break;
2997 }
2998 if (LocaleCompare("font-size",keyword) == 0)
2999 {
3000 (void) GetNextToken(q,&q,extent,token);
3001 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3002 if (token == next_token)
3003 ThrowPointExpectedException(image,token);
3004 break;
3005 }
3006 if (LocaleCompare("font-stretch",keyword) == 0)
3007 {
3008 ssize_t
3009 stretch;
3010
3011 (void) GetNextToken(q,&q,extent,token);
3012 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3013 if (stretch == -1)
3014 {
3015 status=MagickFalse;
3016 break;
3017 }
3018 graphic_context[n]->stretch=(StretchType) stretch;
3019 break;
3020 }
3021 if (LocaleCompare("font-style",keyword) == 0)
3022 {
3023 ssize_t
3024 style;
3025
3026 (void) GetNextToken(q,&q,extent,token);
3027 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3028 if (style == -1)
3029 {
3030 status=MagickFalse;
3031 break;
3032 }
3033 graphic_context[n]->style=(StyleType) style;
3034 break;
3035 }
3036 if (LocaleCompare("font-weight",keyword) == 0)
3037 {
3038 ssize_t
3039 weight;
3040
3041 (void) GetNextToken(q,&q,extent,token);
3042 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3043 if (weight == -1)
3044 weight=(ssize_t) StringToUnsignedLong(token);
3045 graphic_context[n]->weight=(size_t) weight;
3046 break;
3047 }
3048 status=MagickFalse;
3049 break;
3050 }
3051 case 'g':
3052 case 'G':
3053 {
3054 if (LocaleCompare("gradient-units",keyword) == 0)
3055 {
3056 (void) GetNextToken(q,&q,extent,token);
3057 break;
3058 }
3059 if (LocaleCompare("gravity",keyword) == 0)
3060 {
3061 ssize_t
3062 gravity;
3063
3064 (void) GetNextToken(q,&q,extent,token);
3065 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3066 if (gravity == -1)
3067 {
3068 status=MagickFalse;
3069 break;
3070 }
3071 graphic_context[n]->gravity=(GravityType) gravity;
3072 break;
3073 }
3074 status=MagickFalse;
3075 break;
3076 }
3077 case 'i':
3078 case 'I':
3079 {
3080 if (LocaleCompare("image",keyword) == 0)
3081 {
3082 ssize_t
3083 compose;
3084
3085 primitive_type=ImagePrimitive;
3086 (void) GetNextToken(q,&q,extent,token);
3087 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3088 if (compose == -1)
3089 {
3090 status=MagickFalse;
3091 break;
3092 }
3093 graphic_context[n]->compose=(CompositeOperator) compose;
3094 break;
3095 }
3096 if (LocaleCompare("interline-spacing",keyword) == 0)
3097 {
3098 (void) GetNextToken(q,&q,extent,token);
3099 graphic_context[n]->interline_spacing=GetDrawValue(token,
3100 &next_token);
3101 if (token == next_token)
3102 ThrowPointExpectedException(image,token);
3103 break;
3104 }
3105 if (LocaleCompare("interword-spacing",keyword) == 0)
3106 {
3107 (void) GetNextToken(q,&q,extent,token);
3108 graphic_context[n]->interword_spacing=GetDrawValue(token,
3109 &next_token);
3110 if (token == next_token)
3111 ThrowPointExpectedException(image,token);
3112 break;
3113 }
3114 status=MagickFalse;
3115 break;
3116 }
3117 case 'k':
3118 case 'K':
3119 {
3120 if (LocaleCompare("kerning",keyword) == 0)
3121 {
3122 (void) GetNextToken(q,&q,extent,token);
3123 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3124 if (token == next_token)
3125 ThrowPointExpectedException(image,token);
3126 break;
3127 }
3128 status=MagickFalse;
3129 break;
3130 }
3131 case 'l':
3132 case 'L':
3133 {
3134 if (LocaleCompare("letter-spacing",keyword) == 0)
3135 {
3136 (void) GetNextToken(q,&q,extent,token);
3137 if (IsPoint(token) == MagickFalse)
3138 break;
3139 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3140 clone_info->text=AcquireString(" ");
3141 status&=GetTypeMetrics(image,clone_info,&metrics);
3142 graphic_context[n]->kerning=metrics.width*
3143 GetDrawValue(token,&next_token);
3144 clone_info=DestroyDrawInfo(clone_info);
3145 if (token == next_token)
3146 ThrowPointExpectedException(image,token);
3147 break;
3148 }
3149 if (LocaleCompare("line",keyword) == 0)
3150 {
3151 primitive_type=LinePrimitive;
3152 break;
3153 }
3154 status=MagickFalse;
3155 break;
3156 }
3157 case 'm':
3158 case 'M':
3159 {
3160 if (LocaleCompare("mask",keyword) == 0)
3161 {
3162 const char
3163 *mask_path;
3164
3165 /*
3166 Take a node from within the MVG document, and duplicate it here.
3167 */
3168 (void) GetNextToken(q,&q,extent,token);
3169 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3170 if (mask_path != (const char *) NULL)
3171 {
3172 if (graphic_context[n]->composite_mask != (Image *) NULL)
3173 graphic_context[n]->composite_mask=
3174 DestroyImage(graphic_context[n]->composite_mask);
3175 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3176 graphic_context[n],token,mask_path,&image->exception);
3177 if (graphic_context[n]->compliance != SVGCompliance)
3178 status=SetImageMask(image,graphic_context[n]->composite_mask);
3179 }
3180 break;
3181 }
3182 if (LocaleCompare("matte",keyword) == 0)
3183 {
3184 primitive_type=MattePrimitive;
3185 break;
3186 }
3187 status=MagickFalse;
3188 break;
3189 }
3190 case 'o':
3191 case 'O':
3192 {
3193 if (LocaleCompare("offset",keyword) == 0)
3194 {
3195 (void) GetNextToken(q,&q,extent,token);
3196 break;
3197 }
3198 if (LocaleCompare("opacity",keyword) == 0)
3199 {
3200 double
3201 opacity;
3202
3203 (void) GetNextToken(q,&q,extent,token);
3204 if (graphic_context[n]->clip_path != MagickFalse)
3205 break;
3206 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3207 opacity=MagickMin(MagickMax(factor*
3208 GetDrawValue(token,&next_token),0.0),1.0);
3209 if (token == next_token)
3210 ThrowPointExpectedException(image,token);
3211 if (graphic_context[n]->compliance == SVGCompliance)
3212 {
3213 graphic_context[n]->fill_opacity*=(1.0-opacity);
3214 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3215 }
3216 else
3217 {
3218 graphic_context[n]->fill_opacity=((MagickRealType) QuantumRange-
3219 graphic_context[n]->fill_opacity)*(1.0-opacity);
3220 graphic_context[n]->stroke_opacity=((MagickRealType)
3221 QuantumRange-graphic_context[n]->stroke_opacity)*
3222 (1.0-opacity);
3223 }
3224 break;
3225 }
3226 status=MagickFalse;
3227 break;
3228 }
3229 case 'p':
3230 case 'P':
3231 {
3232 if (LocaleCompare("path",keyword) == 0)
3233 {
3234 primitive_type=PathPrimitive;
3235 break;
3236 }
3237 if (LocaleCompare("point",keyword) == 0)
3238 {
3239 primitive_type=PointPrimitive;
3240 break;
3241 }
3242 if (LocaleCompare("polyline",keyword) == 0)
3243 {
3244 primitive_type=PolylinePrimitive;
3245 break;
3246 }
3247 if (LocaleCompare("polygon",keyword) == 0)
3248 {
3249 primitive_type=PolygonPrimitive;
3250 break;
3251 }
3252 if (LocaleCompare("pop",keyword) == 0)
3253 {
3254 if (GetNextToken(q,&q,extent,token) < 1)
3255 break;
3256 if (LocaleCompare("class",token) == 0)
3257 break;
3258 if (LocaleCompare("clip-path",token) == 0)
3259 break;
3260 if (LocaleCompare("defs",token) == 0)
3261 {
3262 defsDepth--;
3263 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3264 MagickTrue;
3265 break;
3266 }
3267 if (LocaleCompare("gradient",token) == 0)
3268 break;
3269 if (LocaleCompare("graphic-context",token) == 0)
3270 {
3271 if (n <= 0)
3272 {
3273 (void) ThrowMagickException(&image->exception,
3274 GetMagickModule(),DrawError,
3275 "UnbalancedGraphicContextPushPop","`%s'",token);
3276 status=MagickFalse;
3277 n=0;
3278 break;
3279 }
3280 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3281 (graphic_context[n]->compliance != SVGCompliance))
3282 if (LocaleCompare(graphic_context[n]->clip_mask,
3283 graphic_context[n-1]->clip_mask) != 0)
3284 status=SetImageClipMask(image,(Image *) NULL);
3285 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3286 n--;
3287 break;
3288 }
3289 if (LocaleCompare("mask",token) == 0)
3290 break;
3291 if (LocaleCompare("pattern",token) == 0)
3292 break;
3293 if (LocaleCompare("symbol",token) == 0)
3294 {
3295 symbolDepth--;
3296 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3297 MagickTrue;
3298 break;
3299 }
3300 status=MagickFalse;
3301 break;
3302 }
3303 if (LocaleCompare("push",keyword) == 0)
3304 {
3305 if (GetNextToken(q,&q,extent,token) < 1)
3306 break;
3307 if (LocaleCompare("class",token) == 0)
3308 {
3309 /*
3310 Class context.
3311 */
3312 for (p=q; *q != '\0'; )
3313 {
3314 if (GetNextToken(q,&q,extent,token) < 1)
3315 break;
3316 if (LocaleCompare(token,"pop") != 0)
3317 continue;
3318 (void) GetNextToken(q,(const char **) NULL,extent,token);
3319 if (LocaleCompare(token,"class") != 0)
3320 continue;
3321 break;
3322 }
3323 (void) GetNextToken(q,&q,extent,token);
3324 break;
3325 }
3326 if (LocaleCompare("clip-path",token) == 0)
3327 {
3328 (void) GetNextToken(q,&q,extent,token);
3329 for (p=q; *q != '\0'; )
3330 {
3331 if (GetNextToken(q,&q,extent,token) < 1)
3332 break;
3333 if (LocaleCompare(token,"pop") != 0)
3334 continue;
3335 (void) GetNextToken(q,(const char **) NULL,extent,token);
3336 if (LocaleCompare(token,"clip-path") != 0)
3337 continue;
3338 break;
3339 }
3340 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3341 {
3342 status=MagickFalse;
3343 break;
3344 }
3345 (void) GetNextToken(q,&q,extent,token);
3346 break;
3347 }
3348 if (LocaleCompare("defs",token) == 0)
3349 {
3350 defsDepth++;
3351 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3352 MagickTrue;
3353 break;
3354 }
3355 if (LocaleCompare("gradient",token) == 0)
3356 {
3357 char
3358 key[2*MaxTextExtent],
3359 name[MaxTextExtent],
3360 type[MaxTextExtent];
3361
3363 segment;
3364
3365 (void) GetNextToken(q,&q,extent,token);
3366 (void) CopyMagickString(name,token,MaxTextExtent);
3367 (void) GetNextToken(q,&q,extent,token);
3368 (void) CopyMagickString(type,token,MaxTextExtent);
3369 (void) GetNextToken(q,&q,extent,token);
3370 segment.x1=GetDrawValue(token,&next_token);
3371 if (token == next_token)
3372 ThrowPointExpectedException(image,token);
3373 (void) GetNextToken(q,&q,extent,token);
3374 if (*token == ',')
3375 (void) GetNextToken(q,&q,extent,token);
3376 segment.y1=GetDrawValue(token,&next_token);
3377 if (token == next_token)
3378 ThrowPointExpectedException(image,token);
3379 (void) GetNextToken(q,&q,extent,token);
3380 if (*token == ',')
3381 (void) GetNextToken(q,&q,extent,token);
3382 segment.x2=GetDrawValue(token,&next_token);
3383 if (token == next_token)
3384 ThrowPointExpectedException(image,token);
3385 (void) GetNextToken(q,&q,extent,token);
3386 if (*token == ',')
3387 (void) GetNextToken(q,&q,extent,token);
3388 segment.y2=GetDrawValue(token,&next_token);
3389 if (token == next_token)
3390 ThrowPointExpectedException(image,token);
3391 if (LocaleCompare(type,"radial") == 0)
3392 {
3393 (void) GetNextToken(q,&q,extent,token);
3394 if (*token == ',')
3395 (void) GetNextToken(q,&q,extent,token);
3396 }
3397 for (p=q; *q != '\0'; )
3398 {
3399 if (GetNextToken(q,&q,extent,token) < 1)
3400 break;
3401 if (LocaleCompare(token,"pop") != 0)
3402 continue;
3403 (void) GetNextToken(q,(const char **) NULL,extent,token);
3404 if (LocaleCompare(token,"gradient") != 0)
3405 continue;
3406 break;
3407 }
3408 if ((q == (char *) NULL) || (*q == '\0') ||
3409 (p == (char *) NULL) || ((q-4) < p))
3410 {
3411 status=MagickFalse;
3412 break;
3413 }
3414 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3415 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3416 graphic_context[n]->affine.ry*segment.y1+
3417 graphic_context[n]->affine.tx;
3418 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3419 graphic_context[n]->affine.sy*segment.y1+
3420 graphic_context[n]->affine.ty;
3421 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3422 graphic_context[n]->affine.ry*segment.y2+
3423 graphic_context[n]->affine.tx;
3424 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3425 graphic_context[n]->affine.sy*segment.y2+
3426 graphic_context[n]->affine.ty;
3427 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3428 (void) SetImageArtifact(image,key,token);
3429 (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3430 (void) SetImageArtifact(image,key,type);
3431 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3432 (void) FormatLocaleString(geometry,MaxTextExtent,
3433 "%gx%g%+.15g%+.15g",
3434 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3435 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3436 bounds.x1,bounds.y1);
3437 (void) SetImageArtifact(image,key,geometry);
3438 (void) GetNextToken(q,&q,extent,token);
3439 break;
3440 }
3441 if (LocaleCompare("graphic-context",token) == 0)
3442 {
3443 n++;
3444 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3445 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3446 if (graphic_context == (DrawInfo **) NULL)
3447 {
3448 (void) ThrowMagickException(&image->exception,
3449 GetMagickModule(),ResourceLimitError,
3450 "MemoryAllocationFailed","`%s'",image->filename);
3451 break;
3452 }
3453 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3454 graphic_context[n-1]);
3455 if (*q == '"')
3456 {
3457 (void) GetNextToken(q,&q,extent,token);
3458 (void) CloneString(&graphic_context[n]->id,token);
3459 }
3460 break;
3461 }
3462 if (LocaleCompare("mask",token) == 0)
3463 {
3464 (void) GetNextToken(q,&q,extent,token);
3465 break;
3466 }
3467 if (LocaleCompare("pattern",token) == 0)
3468 {
3470 bounds;
3471
3472 (void) GetNextToken(q,&q,extent,token);
3473 (void) CopyMagickString(name,token,MaxTextExtent);
3474 (void) GetNextToken(q,&q,extent,token);
3475 bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3476 &next_token)-0.5));
3477 if (token == next_token)
3478 ThrowPointExpectedException(image,token);
3479 (void) GetNextToken(q,&q,extent,token);
3480 if (*token == ',')
3481 (void) GetNextToken(q,&q,extent,token);
3482 bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3483 &next_token)-0.5));
3484 if (token == next_token)
3485 ThrowPointExpectedException(image,token);
3486 (void) GetNextToken(q,&q,extent,token);
3487 if (*token == ',')
3488 (void) GetNextToken(q,&q,extent,token);
3489 bounds.width=CastDoubleToUnsigned(GetDrawValue(token,&next_token)+
3490 0.5);
3491 if (token == next_token)
3492 ThrowPointExpectedException(image,token);
3493 (void) GetNextToken(q,&q,extent,token);
3494 if (*token == ',')
3495 (void) GetNextToken(q,&q,extent,token);
3496 bounds.height=CastDoubleToUnsigned(GetDrawValue(token,&next_token)+
3497 0.5);
3498 if (token == next_token)
3499 ThrowPointExpectedException(image,token);
3500 for (p=q; *q != '\0'; )
3501 {
3502 if (GetNextToken(q,&q,extent,token) < 1)
3503 break;
3504 if (LocaleCompare(token,"pop") != 0)
3505 continue;
3506 (void) GetNextToken(q,(const char **) NULL,extent,token);
3507 if (LocaleCompare(token,"pattern") != 0)
3508 continue;
3509 break;
3510 }
3511 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3512 {
3513 status=MagickFalse;
3514 break;
3515 }
3516 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3517 (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3518 (void) SetImageArtifact(image,key,token);
3519 (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3520 (void) FormatLocaleString(geometry,MaxTextExtent,
3521 "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3522 bounds.height,(double) bounds.x,(double) bounds.y);
3523 (void) SetImageArtifact(image,key,geometry);
3524 (void) GetNextToken(q,&q,extent,token);
3525 break;
3526 }
3527 if (LocaleCompare("symbol",token) == 0)
3528 {
3529 symbolDepth++;
3530 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3531 MagickTrue;
3532 break;
3533 }
3534 status=MagickFalse;
3535 break;
3536 }
3537 status=MagickFalse;
3538 break;
3539 }
3540 case 'r':
3541 case 'R':
3542 {
3543 if (LocaleCompare("rectangle",keyword) == 0)
3544 {
3545 primitive_type=RectanglePrimitive;
3546 break;
3547 }
3548 if (LocaleCompare("rotate",keyword) == 0)
3549 {
3550 (void) GetNextToken(q,&q,extent,token);
3551 angle=GetDrawValue(token,&next_token);
3552 if (token == next_token)
3553 ThrowPointExpectedException(image,token);
3554 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3555 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3556 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3557 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3558 break;
3559 }
3560 if (LocaleCompare("roundRectangle",keyword) == 0)
3561 {
3562 primitive_type=RoundRectanglePrimitive;
3563 break;
3564 }
3565 status=MagickFalse;
3566 break;
3567 }
3568 case 's':
3569 case 'S':
3570 {
3571 if (LocaleCompare("scale",keyword) == 0)
3572 {
3573 (void) GetNextToken(q,&q,extent,token);
3574 affine.sx=GetDrawValue(token,&next_token);
3575 if (token == next_token)
3576 ThrowPointExpectedException(image,token);
3577 (void) GetNextToken(q,&q,extent,token);
3578 if (*token == ',')
3579 (void) GetNextToken(q,&q,extent,token);
3580 affine.sy=GetDrawValue(token,&next_token);
3581 if (token == next_token)
3582 ThrowPointExpectedException(image,token);
3583 break;
3584 }
3585 if (LocaleCompare("skewX",keyword) == 0)
3586 {
3587 (void) GetNextToken(q,&q,extent,token);
3588 angle=GetDrawValue(token,&next_token);
3589 if (token == next_token)
3590 ThrowPointExpectedException(image,token);
3591 affine.ry=sin(DegreesToRadians(angle));
3592 break;
3593 }
3594 if (LocaleCompare("skewY",keyword) == 0)
3595 {
3596 (void) GetNextToken(q,&q,extent,token);
3597 angle=GetDrawValue(token,&next_token);
3598 if (token == next_token)
3599 ThrowPointExpectedException(image,token);
3600 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3601 break;
3602 }
3603 if (LocaleCompare("stop-color",keyword) == 0)
3604 {
3605 GradientType
3606 type;
3607
3609 stop_color;
3610
3611 (void) GetNextToken(q,&q,extent,token);
3612 status&=QueryColorDatabase(token,&stop_color,&image->exception);
3613 type=LinearGradient;
3614 if (draw_info->gradient.type == RadialGradient)
3615 type=RadialGradient;
3616 (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3617 start_color=stop_color;
3618 (void) GetNextToken(q,&q,extent,token);
3619 break;
3620 }
3621 if (LocaleCompare("stroke",keyword) == 0)
3622 {
3623 const char
3624 *mvg_class;
3625
3626 (void) GetNextToken(q,&q,extent,token);
3627 if (graphic_context[n]->clip_path != MagickFalse)
3628 break;
3629 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3630 if (mvg_class != (const char *) NULL)
3631 {
3632 (void) DrawPatternPath(image,draw_info,mvg_class,
3633 &graphic_context[n]->stroke_pattern);
3634 break;
3635 }
3636 (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3637 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3638 {
3639 (void) DrawPatternPath(image,draw_info,token,
3640 &graphic_context[n]->stroke_pattern);
3641 break;
3642 }
3643 status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3644 &image->exception);
3645 if (graphic_context[n]->stroke_opacity != (MagickRealType) OpaqueOpacity)
3646 graphic_context[n]->stroke.opacity=ClampToQuantum(
3647 graphic_context[n]->stroke_opacity);
3648 break;
3649 }
3650 if (LocaleCompare("stroke-antialias",keyword) == 0)
3651 {
3652 (void) GetNextToken(q,&q,extent,token);
3653 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3654 MagickTrue : MagickFalse;
3655 break;
3656 }
3657 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3658 {
3659 if (graphic_context[n]->dash_pattern != (double *) NULL)
3660 graphic_context[n]->dash_pattern=(double *)
3661 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3662 if (IsPoint(q) != MagickFalse)
3663 {
3664 const char
3665 *p;
3666
3667 p=q;
3668 (void) GetNextToken(p,&p,extent,token);
3669 if (*token == ',')
3670 (void) GetNextToken(p,&p,extent,token);
3671 for (x=0; IsPoint(token) != MagickFalse; x++)
3672 {
3673 (void) GetNextToken(p,&p,extent,token);
3674 if (*token == ',')
3675 (void) GetNextToken(p,&p,extent,token);
3676 }
3677 graphic_context[n]->dash_pattern=(double *)
3678 AcquireQuantumMemory((size_t) (2*x+2),
3679 sizeof(*graphic_context[n]->dash_pattern));
3680 if (graphic_context[n]->dash_pattern == (double *) NULL)
3681 {
3682 (void) ThrowMagickException(&image->exception,
3683 GetMagickModule(),ResourceLimitError,
3684 "MemoryAllocationFailed","`%s'",image->filename);
3685 status=MagickFalse;
3686 break;
3687 }
3688 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3689 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3690 for (j=0; j < x; j++)
3691 {
3692 (void) GetNextToken(q,&q,extent,token);
3693 if (*token == ',')
3694 (void) GetNextToken(q,&q,extent,token);
3695 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3696 &next_token);
3697 if (token == next_token)
3698 ThrowPointExpectedException(image,token);
3699 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3700 status=MagickFalse;
3701 }
3702 if ((x & 0x01) != 0)
3703 for ( ; j < (2*x); j++)
3704 graphic_context[n]->dash_pattern[j]=
3705 graphic_context[n]->dash_pattern[j-x];
3706 graphic_context[n]->dash_pattern[j]=0.0;
3707 break;
3708 }
3709 (void) GetNextToken(q,&q,extent,token);
3710 break;
3711 }
3712 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3713 {
3714 (void) GetNextToken(q,&q,extent,token);
3715 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3716 if (token == next_token)
3717 ThrowPointExpectedException(image,token);
3718 break;
3719 }
3720 if (LocaleCompare("stroke-linecap",keyword) == 0)
3721 {
3722 ssize_t
3723 linecap;
3724
3725 (void) GetNextToken(q,&q,extent,token);
3726 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3727 if (linecap == -1)
3728 {
3729 status=MagickFalse;
3730 break;
3731 }
3732 graphic_context[n]->linecap=(LineCap) linecap;
3733 break;
3734 }
3735 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3736 {
3737 ssize_t
3738 linejoin;
3739
3740 (void) GetNextToken(q,&q,extent,token);
3741 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3742 token);
3743 if (linejoin == -1)
3744 {
3745 status=MagickFalse;
3746 break;
3747 }
3748 graphic_context[n]->linejoin=(LineJoin) linejoin;
3749 break;
3750 }
3751 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3752 {
3753 (void) GetNextToken(q,&q,extent,token);
3754 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3755 break;
3756 }
3757 if (LocaleCompare("stroke-opacity",keyword) == 0)
3758 {
3759 double
3760 opacity;
3761
3762 (void) GetNextToken(q,&q,extent,token);
3763 if (graphic_context[n]->clip_path != MagickFalse)
3764 break;
3765 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3766 opacity=MagickMin(MagickMax(factor*
3767 GetDrawValue(token,&next_token),0.0),1.0);
3768 if (token == next_token)
3769 ThrowPointExpectedException(image,token);
3770 if (graphic_context[n]->compliance == SVGCompliance)
3771 graphic_context[n]->stroke_opacity*=(1.0-opacity);
3772 else
3773 graphic_context[n]->stroke_opacity=((MagickRealType) QuantumRange-
3774 graphic_context[n]->stroke_opacity)*(1.0-opacity);
3775 if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3776 graphic_context[n]->stroke.opacity=(Quantum)
3777 graphic_context[n]->stroke_opacity;
3778 else
3779 graphic_context[n]->stroke.opacity=ClampToQuantum(
3780 (MagickRealType) QuantumRange*opacity);
3781 break;
3782 }
3783 if (LocaleCompare("stroke-width",keyword) == 0)
3784 {
3785 (void) GetNextToken(q,&q,extent,token);
3786 if (graphic_context[n]->clip_path != MagickFalse)
3787 break;
3788 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3789 if ((token == next_token) ||
3790 (graphic_context[n]->stroke_width < 0.0))
3791 ThrowPointExpectedException(image,token);
3792 break;
3793 }
3794 status=MagickFalse;
3795 break;
3796 }
3797 case 't':
3798 case 'T':
3799 {
3800 if (LocaleCompare("text",keyword) == 0)
3801 {
3802 primitive_type=TextPrimitive;
3803 cursor=0.0;
3804 break;
3805 }
3806 if (LocaleCompare("text-align",keyword) == 0)
3807 {
3808 ssize_t
3809 align;
3810
3811 (void) GetNextToken(q,&q,extent,token);
3812 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3813 if (align == -1)
3814 {
3815 status=MagickFalse;
3816 break;
3817 }
3818 graphic_context[n]->align=(AlignType) align;
3819 break;
3820 }
3821 if (LocaleCompare("text-anchor",keyword) == 0)
3822 {
3823 ssize_t
3824 align;
3825
3826 (void) GetNextToken(q,&q,extent,token);
3827 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3828 if (align == -1)
3829 {
3830 status=MagickFalse;
3831 break;
3832 }
3833 graphic_context[n]->align=(AlignType) align;
3834 break;
3835 }
3836 if (LocaleCompare("text-antialias",keyword) == 0)
3837 {
3838 (void) GetNextToken(q,&q,extent,token);
3839 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3840 MagickTrue : MagickFalse;
3841 break;
3842 }
3843 if (LocaleCompare("text-undercolor",keyword) == 0)
3844 {
3845 (void) GetNextToken(q,&q,extent,token);
3846 status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3847 &image->exception);
3848 break;
3849 }
3850 if (LocaleCompare("translate",keyword) == 0)
3851 {
3852 (void) GetNextToken(q,&q,extent,token);
3853 affine.tx=GetDrawValue(token,&next_token);
3854 if (token == next_token)
3855 ThrowPointExpectedException(image,token);
3856 (void) GetNextToken(q,&q,extent,token);
3857 if (*token == ',')
3858 (void) GetNextToken(q,&q,extent,token);
3859 affine.ty=GetDrawValue(token,&next_token);
3860 if (token == next_token)
3861 ThrowPointExpectedException(image,token);
3862 break;
3863 }
3864 status=MagickFalse;
3865 break;
3866 }
3867 case 'u':
3868 case 'U':
3869 {
3870 if (LocaleCompare("use",keyword) == 0)
3871 {
3872 const char
3873 *use;
3874
3875 /*
3876 Get a macro from the MVG document, and "use" it here.
3877 */
3878 (void) GetNextToken(q,&q,extent,token);
3879 use=(const char *) GetValueFromSplayTree(macros,token);
3880 if (use != (const char *) NULL)
3881 {
3882 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3883 (void) CloneString(&clone_info->primitive,use);
3884 status=RenderMVGContent(image,clone_info,depth+1);
3885 clone_info=DestroyDrawInfo(clone_info);
3886 }
3887 break;
3888 }
3889 status=MagickFalse;
3890 break;
3891 }
3892 case 'v':
3893 case 'V':
3894 {
3895 if (LocaleCompare("viewbox",keyword) == 0)
3896 {
3897 (void) GetNextToken(q,&q,extent,token);
3898 graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3899 GetDrawValue(token,&next_token)-0.5));
3900 if (token == next_token)
3901 ThrowPointExpectedException(image,token);
3902 (void) GetNextToken(q,&q,extent,token);
3903 if (*token == ',')
3904 (void) GetNextToken(q,&q,extent,token);
3905 graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3906 GetDrawValue(token,&next_token)-0.5));
3907 if (token == next_token)
3908 ThrowPointExpectedException(image,token);
3909 (void) GetNextToken(q,&q,extent,token);
3910 if (*token == ',')
3911 (void) GetNextToken(q,&q,extent,token);
3912 graphic_context[n]->viewbox.width=CastDoubleToUnsigned(GetDrawValue(
3913 token,&next_token)+0.5);
3914 if (token == next_token)
3915 ThrowPointExpectedException(image,token);
3916 (void) GetNextToken(q,&q,extent,token);
3917 if (*token == ',')
3918 (void) GetNextToken(q,&q,extent,token);
3919 graphic_context[n]->viewbox.height=CastDoubleToUnsigned(GetDrawValue(
3920 token,&next_token)+0.5);
3921 if (token == next_token)
3922 ThrowPointExpectedException(image,token);
3923 break;
3924 }
3925 status=MagickFalse;
3926 break;
3927 }
3928 case 'w':
3929 case 'W':
3930 {
3931 if (LocaleCompare("word-spacing",keyword) == 0)
3932 {
3933 (void) GetNextToken(q,&q,extent,token);
3934 graphic_context[n]->interword_spacing=GetDrawValue(token,
3935 &next_token);
3936 if (token == next_token)
3937 ThrowPointExpectedException(image,token);
3938 break;
3939 }
3940 status=MagickFalse;
3941 break;
3942 }
3943 default:
3944 {
3945 status=MagickFalse;
3946 break;
3947 }
3948 }
3949 if (status == MagickFalse)
3950 break;
3951 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3952 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3953 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3954 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3955 {
3956 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3957 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3958 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3959 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3960 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3961 current.tx;
3962 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3963 current.ty;
3964 }
3965 if (primitive_type == UndefinedPrimitive)
3966 {
3967 if ((draw_info->debug != MagickFalse) && (q > p))
3968 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3969 (q-p-1),p);
3970 continue;
3971 }
3972 /*
3973 Parse the primitive attributes.
3974 */
3975 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3976 if (primitive_info[i].text != (char *) NULL)
3977 primitive_info[i].text=DestroyString(primitive_info[i].text);
3978 i=0;
3979 mvg_info.offset=i;
3980 j=0;
3981 primitive_info[0].point.x=0.0;
3982 primitive_info[0].point.y=0.0;
3983 primitive_info[0].coordinates=0;
3984 primitive_info[0].method=FloodfillMethod;
3985 primitive_info[0].closed_subpath=MagickFalse;
3986 for (x=0; *q != '\0'; x++)
3987 {
3988 /*
3989 Define points.
3990 */
3991 if (IsPoint(q) == MagickFalse)
3992 break;
3993 (void) GetNextToken(q,&q,extent,token);
3994 point.x=GetDrawValue(token,&next_token);
3995 if (token == next_token)
3996 ThrowPointExpectedException(image,token);
3997 (void) GetNextToken(q,&q,extent,token);
3998 if (*token == ',')
3999 (void) GetNextToken(q,&q,extent,token);
4000 point.y=GetDrawValue(token,&next_token);
4001 if (token == next_token)
4002 ThrowPointExpectedException(image,token);
4003 (void) GetNextToken(q,(const char **) NULL,extent,token);
4004 if (*token == ',')
4005 (void) GetNextToken(q,&q,extent,token);
4006 primitive_info[i].primitive=primitive_type;
4007 primitive_info[i].point=point;
4008 primitive_info[i].coordinates=0;
4009 primitive_info[i].method=FloodfillMethod;
4010 primitive_info[i].closed_subpath=MagickFalse;
4011 i++;
4012 mvg_info.offset=i;
4013 if (i < (ssize_t) number_points)
4014 continue;
4015 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4016 primitive_info=(*mvg_info.primitive_info);
4017 }
4018 if (status == MagickFalse)
4019 break;
4020 if (primitive_info[j].text != (char *) NULL)
4021 primitive_info[j].text=DestroyString(primitive_info[j].text);
4022 primitive_info[j].primitive=primitive_type;
4023 primitive_info[j].coordinates=(size_t) x;
4024 primitive_info[j].method=FloodfillMethod;
4025 primitive_info[j].closed_subpath=MagickFalse;
4026 /*
4027 Circumscribe primitive within a circle.
4028 */
4029 bounds.x1=primitive_info[j].point.x;
4030 bounds.y1=primitive_info[j].point.y;
4031 bounds.x2=primitive_info[j].point.x;
4032 bounds.y2=primitive_info[j].point.y;
4033 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4034 {
4035 point=primitive_info[j+k].point;
4036 if (point.x < bounds.x1)
4037 bounds.x1=point.x;
4038 if (point.y < bounds.y1)
4039 bounds.y1=point.y;
4040 if (point.x > bounds.x2)
4041 bounds.x2=point.x;
4042 if (point.y > bounds.y2)
4043 bounds.y2=point.y;
4044 }
4045 /*
4046 Speculate how many points our primitive might consume.
4047 */
4048 coordinates=(double) primitive_info[j].coordinates;
4049 switch (primitive_type)
4050 {
4051 case RectanglePrimitive:
4052 {
4053 coordinates*=5.0;
4054 break;
4055 }
4056 case RoundRectanglePrimitive:
4057 {
4058 double
4059 alpha,
4060 beta,
4061 radius;
4062
4063 alpha=bounds.x2-bounds.x1;
4064 beta=bounds.y2-bounds.y1;
4065 radius=hypot(alpha,beta);
4066 coordinates*=5.0;
4067 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4068 BezierQuantum+360.0;
4069 break;
4070 }
4071 case BezierPrimitive:
4072 {
4073 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4074 break;
4075 }
4076 case PathPrimitive:
4077 {
4078 char
4079 *s,
4080 *t;
4081
4082 (void) GetNextToken(q,&q,extent,token);
4083 coordinates=1.0;
4084 t=token;
4085 for (s=token; *s != '\0'; s=t)
4086 {
4087 double
4088 value;
4089
4090 value=GetDrawValue(s,&t);
4091 (void) value;
4092 if (s == t)
4093 {
4094 t++;
4095 continue;
4096 }
4097 coordinates++;
4098 }
4099 for (s=token; *s != '\0'; s++)
4100 if (strspn(s,"AaCcQqSsTt") != 0)
4101 coordinates+=(20.0*BezierQuantum)+360.0;
4102 break;
4103 }
4104 default:
4105 break;
4106 }
4107 if (status == MagickFalse)
4108 break;
4109 if (((size_t) (i+coordinates)) >= number_points)
4110 {
4111 /*
4112 Resize based on speculative points required by primitive.
4113 */
4114 number_points+=coordinates+1;
4115 if (number_points < (size_t) coordinates)
4116 {
4117 (void) ThrowMagickException(&image->exception,GetMagickModule(),
4118 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4119 image->filename);
4120 break;
4121 }
4122 mvg_info.offset=i;
4123 status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4124 primitive_info=(*mvg_info.primitive_info);
4125 }
4126 status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4127 primitive_info=(*mvg_info.primitive_info);
4128 if (status == MagickFalse)
4129 break;
4130 mvg_info.offset=j;
4131 switch (primitive_type)
4132 {
4133 case PointPrimitive:
4134 default:
4135 {
4136 if (primitive_info[j].coordinates != 1)
4137 {
4138 status=MagickFalse;
4139 break;
4140 }
4141 status&=TracePoint(primitive_info+j,primitive_info[j].point);
4142 primitive_info=(*mvg_info.primitive_info);
4143 i=(ssize_t) (j+primitive_info[j].coordinates);
4144 break;
4145 }
4146 case LinePrimitive:
4147 {
4148 if (primitive_info[j].coordinates != 2)
4149 {
4150 status=MagickFalse;
4151 break;
4152 }
4153 status&=TraceLine(primitive_info+j,primitive_info[j].point,
4154 primitive_info[j+1].point);
4155 primitive_info=(*mvg_info.primitive_info);
4156 i=(ssize_t) (j+primitive_info[j].coordinates);
4157 break;
4158 }
4159 case RectanglePrimitive:
4160 {
4161 if (primitive_info[j].coordinates != 2)
4162 {
4163 status=MagickFalse;
4164 break;
4165 }
4166 status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4167 primitive_info[j+1].point);
4168 primitive_info=(*mvg_info.primitive_info);
4169 i=(ssize_t) (j+primitive_info[j].coordinates);
4170 break;
4171 }
4172 case RoundRectanglePrimitive:
4173 {
4174 if (primitive_info[j].coordinates != 3)
4175 {
4176 status=MagickFalse;
4177 break;
4178 }
4179 if ((primitive_info[j+2].point.x < 0.0) ||
4180 (primitive_info[j+2].point.y < 0.0))
4181 {
4182 status=MagickFalse;
4183 break;
4184 }
4185 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4186 {
4187 status=MagickFalse;
4188 break;
4189 }
4190 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4191 {
4192 status=MagickFalse;
4193 break;
4194 }
4195 status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4196 primitive_info[j+1].point,primitive_info[j+2].point);
4197 primitive_info=(*mvg_info.primitive_info);
4198 i=(ssize_t) (j+primitive_info[j].coordinates);
4199 break;
4200 }
4201 case ArcPrimitive:
4202 {
4203 if (primitive_info[j].coordinates != 3)
4204 {
4205 status=MagickFalse;
4206 break;
4207 }
4208 status&=TraceArc(&mvg_info,primitive_info[j].point,
4209 primitive_info[j+1].point,primitive_info[j+2].point);
4210 primitive_info=(*mvg_info.primitive_info);
4211 i=(ssize_t) (j+primitive_info[j].coordinates);
4212 break;
4213 }
4214 case EllipsePrimitive:
4215 {
4216 if (primitive_info[j].coordinates != 3)
4217 {
4218 status=MagickFalse;
4219 break;
4220 }
4221 if ((primitive_info[j+1].point.x < 0.0) ||
4222 (primitive_info[j+1].point.y < 0.0))
4223 {
4224 status=MagickFalse;
4225 break;
4226 }
4227 status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4228 primitive_info[j+1].point,primitive_info[j+2].point);
4229 primitive_info=(*mvg_info.primitive_info);
4230 i=(ssize_t) (j+primitive_info[j].coordinates);
4231 break;
4232 }
4233 case CirclePrimitive:
4234 {
4235 if (primitive_info[j].coordinates != 2)
4236 {
4237 status=MagickFalse;
4238 break;
4239 }
4240 status&=TraceCircle(&mvg_info,primitive_info[j].point,
4241 primitive_info[j+1].point);
4242 primitive_info=(*mvg_info.primitive_info);
4243 i=(ssize_t) (j+primitive_info[j].coordinates);
4244 break;
4245 }
4246 case PolylinePrimitive:
4247 {
4248 if (primitive_info[j].coordinates < 1)
4249 {
4250 status=MagickFalse;
4251 break;
4252 }
4253 break;
4254 }
4255 case PolygonPrimitive:
4256 {
4257 if (primitive_info[j].coordinates < 3)
4258 {
4259 status=MagickFalse;
4260 break;
4261 }
4262 primitive_info[i]=primitive_info[j];
4263 primitive_info[i].coordinates=0;
4264 primitive_info[j].coordinates++;
4265 primitive_info[j].closed_subpath=MagickTrue;
4266 i++;
4267 break;
4268 }
4269 case BezierPrimitive:
4270 {
4271 if (primitive_info[j].coordinates < 3)
4272 {
4273 status=MagickFalse;
4274 break;
4275 }
4276 status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4277 primitive_info=(*mvg_info.primitive_info);
4278 i=(ssize_t) (j+primitive_info[j].coordinates);
4279 break;
4280 }
4281 case PathPrimitive:
4282 {
4283 coordinates=(double) TracePath(image,&mvg_info,token);
4284 primitive_info=(*mvg_info.primitive_info);
4285 if (coordinates < 0.0)
4286 {
4287 status=MagickFalse;
4288 break;
4289 }
4290 i=(ssize_t) (j+coordinates);
4291 break;
4292 }
4293 case ColorPrimitive:
4294 case MattePrimitive:
4295 {
4296 ssize_t
4297 method;
4298
4299 if (primitive_info[j].coordinates != 1)
4300 {
4301 status=MagickFalse;
4302 break;
4303 }
4304 (void) GetNextToken(q,&q,extent,token);
4305 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4306 if (method == -1)
4307 {
4308 status=MagickFalse;
4309 break;
4310 }
4311 primitive_info[j].method=(PaintMethod) method;
4312 break;
4313 }
4314 case TextPrimitive:
4315 {
4316 char
4317 geometry[MagickPathExtent];
4318
4319 if (primitive_info[j].coordinates != 1)
4320 {
4321 status=MagickFalse;
4322 break;
4323 }
4324 if (*token != ',')
4325 (void) GetNextToken(q,&q,extent,token);
4326 (void) CloneString(&primitive_info[j].text,token);
4327 /*
4328 Compute text cursor offset.
4329 */
4330 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4331 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4332 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4333 {
4334 mvg_info.point=primitive_info->point;
4335 primitive_info->point.x+=cursor;
4336 }
4337 else
4338 {
4339 mvg_info.point=primitive_info->point;
4340 cursor=0.0;
4341 }
4342 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4343 primitive_info->point.x,primitive_info->point.y);
4344 clone_info->render=MagickFalse;
4345 clone_info->text=AcquireString(token);
4346 status&=GetTypeMetrics(image,clone_info,&metrics);
4347 clone_info=DestroyDrawInfo(clone_info);
4348 cursor+=metrics.width;
4349 if (graphic_context[n]->compliance != SVGCompliance)
4350 cursor=0.0;
4351 break;
4352 }
4353 case ImagePrimitive:
4354 {
4355 if (primitive_info[j].coordinates != 2)
4356 {
4357 status=MagickFalse;
4358 break;
4359 }
4360 (void) GetNextToken(q,&q,extent,token);
4361 (void) CloneString(&primitive_info[j].text,token);
4362 break;
4363 }
4364 }
4365 mvg_info.offset=i;
4366 if (status == 0)
4367 break;
4368 primitive_info[i].primitive=UndefinedPrimitive;
4369 if ((draw_info->debug != MagickFalse) && (q > p))
4370 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4371 /*
4372 Sanity check.
4373 */
4374 status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4375 &graphic_context[n]->affine));
4376 primitive_info=(*mvg_info.primitive_info);
4377 if (status == 0)
4378 break;
4379 status&=CheckPrimitiveExtent(&mvg_info,(double)
4380 graphic_context[n]->stroke_width);
4381 primitive_info=(*mvg_info.primitive_info);
4382 if (status == 0)
4383 break;
4384 if (i == 0)
4385 continue;
4386 /*
4387 Transform points.
4388 */
4389 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4390 {
4391 point=primitive_info[i].point;
4392 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4393 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4394 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4395 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4396 point=primitive_info[i].point;
4397 if (point.x < graphic_context[n]->bounds.x1)
4398 graphic_context[n]->bounds.x1=point.x;
4399 if (point.y < graphic_context[n]->bounds.y1)
4400 graphic_context[n]->bounds.y1=point.y;
4401 if (point.x > graphic_context[n]->bounds.x2)
4402 graphic_context[n]->bounds.x2=point.x;
4403 if (point.y > graphic_context[n]->bounds.y2)
4404 graphic_context[n]->bounds.y2=point.y;
4405 if (primitive_info[i].primitive == ImagePrimitive)
4406 break;
4407 if (i >= (ssize_t) number_points)
4408 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4409 }
4410 if (graphic_context[n]->render != MagickFalse)
4411 {
4412 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4413 (graphic_context[n]->clip_mask != (char *) NULL) &&
4414 (LocaleCompare(graphic_context[n]->clip_mask,
4415 graphic_context[n-1]->clip_mask) != 0))
4416 {
4417 const char
4418 *clip_path;
4419
4420 clip_path=(const char *) GetValueFromSplayTree(macros,
4421 graphic_context[n]->clip_mask);
4422 if (clip_path != (const char *) NULL)
4423 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4424 clip_path);
4425 status&=DrawClipPath(image,graphic_context[n],
4426 graphic_context[n]->clip_mask);
4427 }
4428 status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4429 }
4430 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4431 primitive_extent);
4432 if (proceed == MagickFalse)
4433 break;
4434 if (status == 0)
4435 break;
4436 }
4437 if (draw_info->debug != MagickFalse)
4438 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4439 /*
4440 Relinquish resources.
4441 */
4442 macros=DestroySplayTree(macros);
4443 token=DestroyString(token);
4444 if (primitive_info != (PrimitiveInfo *) NULL)
4445 {
4446 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4447 if (primitive_info[i].text != (char *) NULL)
4448 primitive_info[i].text=DestroyString(primitive_info[i].text);
4449 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4450 }
4451 primitive=DestroyString(primitive);
4452 for ( ; n >= 0; n--)
4453 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4454 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4455 if (status == MagickFalse)
4456 ThrowBinaryImageException(DrawError,
4457 "NonconformingDrawingPrimitiveDefinition",keyword);
4458 return(status != 0 ? MagickTrue : MagickFalse);
4459}
4460
4461MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4462{
4463 return(RenderMVGContent(image,draw_info,0));
4464}
4465
4466/*
4467%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4468% %
4469% %
4470% %
4471% D r a w P a t t e r n P a t h %
4472% %
4473% %
4474% %
4475%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4476%
4477% DrawPatternPath() draws a pattern.
4478%
4479% The format of the DrawPatternPath method is:
4480%
4481% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4482% const char *name,Image **pattern)
4483%
4484% A description of each parameter follows:
4485%
4486% o image: the image.
4487%
4488% o draw_info: the draw info.
4489%
4490% o name: the pattern name.
4491%
4492% o image: the image.
4493%
4494*/
4495MagickExport MagickBooleanType DrawPatternPath(Image *image,
4496 const DrawInfo *draw_info,const char *name,Image **pattern)
4497{
4498 char
4499 property[MaxTextExtent];
4500
4501 const char
4502 *geometry,
4503 *path,
4504 *type;
4505
4506 DrawInfo
4507 *clone_info;
4508
4509 ImageInfo
4510 *image_info;
4511
4512 MagickBooleanType
4513 status;
4514
4515 assert(image != (Image *) NULL);
4516 assert(image->signature == MagickCoreSignature);
4517 assert(draw_info != (const DrawInfo *) NULL);
4518 if (IsEventLogging() != MagickFalse)
4519 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4520 assert(name != (const char *) NULL);
4521 (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4522 path=GetImageArtifact(image,property);
4523 if (path == (const char *) NULL)
4524 return(MagickFalse);
4525 (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4526 geometry=GetImageArtifact(image,property);
4527 if (geometry == (const char *) NULL)
4528 return(MagickFalse);
4529 if ((*pattern) != (Image *) NULL)
4530 *pattern=DestroyImage(*pattern);
4531 image_info=AcquireImageInfo();
4532 image_info->size=AcquireString(geometry);
4533 *pattern=AcquireImage(image_info);
4534 image_info=DestroyImageInfo(image_info);
4535 (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4536 &image->exception);
4537 (void) SetImageBackgroundColor(*pattern);
4538 if (draw_info->debug != MagickFalse)
4539 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4540 "begin pattern-path %s %s",name,geometry);
4541 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4542 if (clone_info->fill_pattern != (Image *) NULL)
4543 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4544 if (clone_info->stroke_pattern != (Image *) NULL)
4545 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4546 (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4547 type=GetImageArtifact(image,property);
4548 if (type != (const char *) NULL)
4549 clone_info->gradient.type=(GradientType) ParseCommandOption(
4550 MagickGradientOptions,MagickFalse,type);
4551 (void) CloneString(&clone_info->primitive,path);
4552 status=RenderMVGContent(*pattern,clone_info,0);
4553 clone_info=DestroyDrawInfo(clone_info);
4554 if (draw_info->debug != MagickFalse)
4555 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4556 return(status);
4557}
4558
4559/*
4560%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4561% %
4562% %
4563% %
4564+ D r a w P o l y g o n P r i m i t i v e %
4565% %
4566% %
4567% %
4568%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4569%
4570% DrawPolygonPrimitive() draws a polygon on the image.
4571%
4572% The format of the DrawPolygonPrimitive method is:
4573%
4574% MagickBooleanType DrawPolygonPrimitive(Image *image,
4575% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4576%
4577% A description of each parameter follows:
4578%
4579% o image: the image.
4580%
4581% o draw_info: the draw info.
4582%
4583% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4584%
4585*/
4586
4587static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4588{
4589 ssize_t
4590 i;
4591
4592 assert(polygon_info != (PolygonInfo **) NULL);
4593 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4594 if (polygon_info[i] != (PolygonInfo *) NULL)
4595 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4596 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4597 return(polygon_info);
4598}
4599
4600static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4601 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4602{
4603 PathInfo
4604 *magick_restrict path_info;
4605
4607 **polygon_info;
4608
4609 size_t
4610 number_threads;
4611
4612 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4613 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4614 sizeof(*polygon_info));
4615 if (polygon_info == (PolygonInfo **) NULL)
4616 {
4617 (void) ThrowMagickException(exception,GetMagickModule(),
4618 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4619 return((PolygonInfo **) NULL);
4620 }
4621 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4622 path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4623 if (path_info == (PathInfo *) NULL)
4624 return(DestroyPolygonTLS(polygon_info));
4625 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4626 if (polygon_info[0] == (PolygonInfo *) NULL)
4627 {
4628 (void) ThrowMagickException(exception,GetMagickModule(),
4629 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4630 return(DestroyPolygonTLS(polygon_info));
4631 }
4632 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4633 return(polygon_info);
4634}
4635
4636static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4637 const size_t number_threads,ExceptionInfo *exception)
4638{
4639 ssize_t
4640 i;
4641
4642 for (i=1; i < (ssize_t) number_threads; i++)
4643 {
4644 EdgeInfo
4645 *edge_info;
4646
4647 ssize_t
4648 j;
4649
4650 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4651 sizeof(*polygon_info[i]));
4652 if (polygon_info[i] == (PolygonInfo *) NULL)
4653 {
4654 (void) ThrowMagickException(exception,GetMagickModule(),
4655 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4656 return(MagickFalse);
4657 }
4658 polygon_info[i]->number_edges=0;
4659 edge_info=polygon_info[0]->edges;
4660 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4661 polygon_info[0]->number_edges,sizeof(*edge_info));
4662 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4663 {
4664 (void) ThrowMagickException(exception,GetMagickModule(),
4665 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4666 return(MagickFalse);
4667 }
4668 (void) memcpy(polygon_info[i]->edges,edge_info,
4669 polygon_info[0]->number_edges*sizeof(*edge_info));
4670 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4671 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4672 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4673 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4674 {
4675 edge_info=polygon_info[0]->edges+j;
4676 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4677 edge_info->number_points,sizeof(*edge_info));
4678 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4679 {
4680 (void) ThrowMagickException(exception,GetMagickModule(),
4681 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4682 return(MagickFalse);
4683 }
4684 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4685 edge_info->number_points*sizeof(*edge_info->points));
4686 }
4687 }
4688 return(MagickTrue);
4689}
4690
4691static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4692{
4693 assert(edge < (ssize_t) polygon_info->number_edges);
4694 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4695 polygon_info->edges[edge].points);
4696 polygon_info->number_edges--;
4697 if (edge < (ssize_t) polygon_info->number_edges)
4698 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4699 (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4700 return(polygon_info->number_edges);
4701}
4702
4703static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4704 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4705 const ssize_t y,double *stroke_opacity)
4706{
4707 double
4708 alpha,
4709 beta,
4710 distance,
4711 subpath_opacity;
4712
4713 PointInfo
4714 delta;
4715
4716 EdgeInfo
4717 *p;
4718
4719 const PointInfo
4720 *q;
4721
4722 ssize_t
4723 i;
4724
4725 ssize_t
4726 j,
4727 winding_number;
4728
4729 /*
4730 Compute fill & stroke opacity for this (x,y) point.
4731 */
4732 *stroke_opacity=0.0;
4733 subpath_opacity=0.0;
4734 p=polygon_info->edges;
4735 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4736 {
4737 if ((double) y <= (p->bounds.y1-mid-0.5))
4738 break;
4739 if ((double) y > (p->bounds.y2+mid+0.5))
4740 {
4741 p--;
4742 (void) DestroyEdge(polygon_info,j--);
4743 continue;
4744 }
4745 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4746 ((double) x > (p->bounds.x2+mid+0.5)))
4747 continue;
4748 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4749 for ( ; i < (ssize_t) p->number_points; i++)
4750 {
4751 if ((double) y <= (p->points[i-1].y-mid-0.5))
4752 break;
4753 if ((double) y > (p->points[i].y+mid+0.5))
4754 continue;
4755 if (p->scanline != (double) y)
4756 {
4757 p->scanline=(double) y;
4758 p->highwater=(size_t) i;
4759 }
4760 /*
4761 Compute distance between a point and an edge.
4762 */
4763 q=p->points+i-1;
4764 delta.x=(q+1)->x-q->x;
4765 delta.y=(q+1)->y-q->y;
4766 beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4767 if (beta <= 0.0)
4768 {
4769 delta.x=(double) x-q->x;
4770 delta.y=(double) y-q->y;
4771 distance=delta.x*delta.x+delta.y*delta.y;
4772 }
4773 else
4774 {
4775 alpha=delta.x*delta.x+delta.y*delta.y;
4776 if (beta >= alpha)
4777 {
4778 delta.x=(double) x-(q+1)->x;
4779 delta.y=(double) y-(q+1)->y;
4780 distance=delta.x*delta.x+delta.y*delta.y;
4781 }
4782 else
4783 {
4784 alpha=PerceptibleReciprocal(alpha);
4785 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4786 distance=alpha*beta*beta;
4787 }
4788 }
4789 /*
4790 Compute stroke & subpath opacity.
4791 */
4792 beta=0.0;
4793 if (p->ghostline == MagickFalse)
4794 {
4795 alpha=mid+0.5;
4796 if ((*stroke_opacity < 1.0) &&
4797 (distance <= ((alpha+0.25)*(alpha+0.25))))
4798 {
4799 alpha=mid-0.5;
4800 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4801 *stroke_opacity=1.0;
4802 else
4803 {
4804 beta=1.0;
4805 if (fabs(distance-1.0) >= MagickEpsilon)
4806 beta=sqrt((double) distance);
4807 alpha=beta-mid-0.5;
4808 if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4809 *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4810 }
4811 }
4812 }
4813 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4814 continue;
4815 if (distance <= 0.0)
4816 {
4817 subpath_opacity=1.0;
4818 continue;
4819 }
4820 if (distance > 1.0)
4821 continue;
4822 if (fabs(beta) < MagickEpsilon)
4823 {
4824 beta=1.0;
4825 if (fabs(distance-1.0) >= MagickEpsilon)
4826 beta=sqrt(distance);
4827 }
4828 alpha=beta-1.0;
4829 if (subpath_opacity < (alpha*alpha))
4830 subpath_opacity=alpha*alpha;
4831 }
4832 }
4833 /*
4834 Compute fill opacity.
4835 */
4836 if (fill == MagickFalse)
4837 return(0.0);
4838 if (subpath_opacity >= 1.0)
4839 return(1.0);
4840 /*
4841 Determine winding number.
4842 */
4843 winding_number=0;
4844 p=polygon_info->edges;
4845 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4846 {
4847 if ((double) y <= p->bounds.y1)
4848 break;
4849 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4850 continue;
4851 if ((double) x > p->bounds.x2)
4852 {
4853 winding_number+=p->direction != 0 ? 1 : -1;
4854 continue;
4855 }
4856 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4857 for ( ; i < (ssize_t) (p->number_points-1); i++)
4858 if ((double) y <= p->points[i].y)
4859 break;
4860 q=p->points+i-1;
4861 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4862 winding_number+=p->direction != 0 ? 1 : -1;
4863 }
4864 if (fill_rule != NonZeroRule)
4865 {
4866 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4867 return(1.0);
4868 }
4869 else
4870 if (MagickAbsoluteValue(winding_number) != 0)
4871 return(1.0);
4872 return(subpath_opacity);
4873}
4874
4875static MagickBooleanType DrawPolygonPrimitive(Image *image,
4876 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4877{
4878 typedef struct _ExtentInfo
4879 {
4880 ssize_t
4881 x1,
4882 y1,
4883 x2,
4884 y2;
4885 } ExtentInfo;
4886
4887 CacheView
4888 *image_view;
4889
4890 const char
4891 *artifact;
4892
4893 double
4894 mid;
4895
4897 *exception;
4898
4899 ExtentInfo
4900 poly_extent;
4901
4902 MagickBooleanType
4903 fill,
4904 status;
4905
4907 **magick_restrict polygon_info;
4908
4909 EdgeInfo
4910 *p;
4911
4913 bounds;
4914
4915 size_t
4916 number_threads = 1;
4917
4918 ssize_t
4919 i,
4920 y;
4921
4922 assert(image != (Image *) NULL);
4923 assert(image->signature == MagickCoreSignature);
4924 assert(draw_info != (DrawInfo *) NULL);
4925 assert(draw_info->signature == MagickCoreSignature);
4926 assert(primitive_info != (PrimitiveInfo *) NULL);
4927 if (IsEventLogging() != MagickFalse)
4928 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4929 if (primitive_info->coordinates <= 1)
4930 return(MagickTrue);
4931 /*
4932 Compute bounding box.
4933 */
4934 polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4935 if (polygon_info == (PolygonInfo **) NULL)
4936 return(MagickFalse);
4937 if (draw_info->debug != MagickFalse)
4938 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4939 fill=(primitive_info->method == FillToBorderMethod) ||
4940 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4941 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4942 bounds=polygon_info[0]->edges[0].bounds;
4943 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4944 if (IsStringTrue(artifact) != MagickFalse)
4945 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4946 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4947 {
4948 p=polygon_info[0]->edges+i;
4949 if (p->bounds.x1 < bounds.x1)
4950 bounds.x1=p->bounds.x1;
4951 if (p->bounds.y1 < bounds.y1)
4952 bounds.y1=p->bounds.y1;
4953 if (p->bounds.x2 > bounds.x2)
4954 bounds.x2=p->bounds.x2;
4955 if (p->bounds.y2 > bounds.y2)
4956 bounds.y2=p->bounds.y2;
4957 }
4958 bounds.x1-=(mid+1.0);
4959 bounds.y1-=(mid+1.0);
4960 bounds.x2+=(mid+1.0);
4961 bounds.y2+=(mid+1.0);
4962 if ((bounds.x1 >= (double) image->columns) ||
4963 (bounds.y1 >= (double) image->rows) ||
4964 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4965 {
4966 polygon_info=DestroyPolygonTLS(polygon_info);
4967 return(MagickTrue); /* virtual polygon */
4968 }
4969 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4970 (double) image->columns-1.0 : bounds.x1;
4971 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4972 (double) image->rows-1.0 : bounds.y1;
4973 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4974 (double) image->columns-1.0 : bounds.x2;
4975 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4976 (double) image->rows-1.0 : bounds.y2;
4977 poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
4978 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
4979 poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
4980 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
4981 number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
4982 poly_extent.y1+1,1);
4983 status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
4984 if (status == MagickFalse)
4985 {
4986 polygon_info=DestroyPolygonTLS(polygon_info);
4987 return(status);
4988 }
4989 status=MagickTrue;
4990 exception=(&image->exception);
4991 image_view=AcquireAuthenticCacheView(image,exception);
4992 if ((primitive_info->coordinates == 1) ||
4993 (polygon_info[0]->number_edges == 0))
4994 {
4995 /*
4996 Draw point.
4997 */
4998#if defined(MAGICKCORE_OPENMP_SUPPORT)
4999 #pragma omp parallel for schedule(static) shared(status) \
5000 num_threads(number_threads)
5001#endif
5002 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5003 {
5004 MagickBooleanType
5005 sync;
5006
5008 *magick_restrict q;
5009
5010 ssize_t
5011 x;
5012
5013 if (status == MagickFalse)
5014 continue;
5015 x=poly_extent.x1;
5016 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5017 x+1),1,exception);
5018 if (q == (PixelPacket *) NULL)
5019 {
5020 status=MagickFalse;
5021 continue;
5022 }
5023 for ( ; x <= poly_extent.x2; x++)
5024 {
5025 if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5026 (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5027 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5028 q++;
5029 }
5030 sync=SyncCacheViewAuthenticPixels(image_view,exception);
5031 if (sync == MagickFalse)
5032 status=MagickFalse;
5033 }
5034 image_view=DestroyCacheView(image_view);
5035 polygon_info=DestroyPolygonTLS(polygon_info);
5036 if (draw_info->debug != MagickFalse)
5037 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5038 " end draw-polygon");
5039 return(status);
5040 }
5041 /*
5042 Draw polygon or line.
5043 */
5044 poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5045 poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5046#if defined(MAGICKCORE_OPENMP_SUPPORT)
5047 #pragma omp parallel for schedule(static) shared(status) \
5048 num_threads(number_threads)
5049#endif
5050 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5051 {
5052 const int
5053 id = GetOpenMPThreadId();
5054
5056 fill_color,
5057 stroke_color;
5058
5060 *magick_restrict q;
5061
5062 ssize_t
5063 x;
5064
5065 if (status == MagickFalse)
5066 continue;
5067 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5068 (poly_extent.x2-poly_extent.x1+1),1,exception);
5069 if (q == (PixelPacket *) NULL)
5070 {
5071 status=MagickFalse;
5072 continue;
5073 }
5074 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5075 {
5076 double
5077 fill_opacity,
5078 stroke_opacity;
5079
5080 /*
5081 Fill and/or stroke.
5082 */
5083 fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5084 draw_info->fill_rule,x,y,&stroke_opacity);
5085 if (draw_info->stroke_antialias == MagickFalse)
5086 {
5087 fill_opacity=fill_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5088 stroke_opacity=stroke_opacity >= AntialiasThreshold ? 1.0 : 0.0;
5089 }
5090 (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5091 &fill_color);
5092 fill_opacity=(double) ((MagickRealType) QuantumRange-fill_opacity*
5093 ((MagickRealType) QuantumRange-(MagickRealType) fill_color.opacity));
5094 MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5095 (MagickRealType) q->opacity,q);
5096 (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5097 &stroke_color);
5098 stroke_opacity=(double) ((MagickRealType) QuantumRange-stroke_opacity*
5099 ((MagickRealType) QuantumRange-(MagickRealType) stroke_color.opacity));
5100 MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5101 (MagickRealType) q->opacity,q);
5102 q++;
5103 }
5104 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5105 status=MagickFalse;
5106 }
5107 image_view=DestroyCacheView(image_view);
5108 polygon_info=DestroyPolygonTLS(polygon_info);
5109 if (draw_info->debug != MagickFalse)
5110 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5111 return(status);
5112}
5113
5114/*
5115%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5116% %
5117% %
5118% %
5119% D r a w P r i m i t i v e %
5120% %
5121% %
5122% %
5123%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5124%
5125% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5126%
5127% The format of the DrawPrimitive method is:
5128%
5129% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5130% PrimitiveInfo *primitive_info)
5131%
5132% A description of each parameter follows:
5133%
5134% o image: the image.
5135%
5136% o draw_info: the draw info.
5137%
5138% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5139%
5140*/
5141static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5142{
5143 const char
5144 *methods[] =
5145 {
5146 "point",
5147 "replace",
5148 "floodfill",
5149 "filltoborder",
5150 "reset",
5151 "?"
5152 };
5153
5154 PointInfo
5155 p,
5156 q,
5157 point;
5158
5159 ssize_t
5160 i,
5161 x;
5162
5163 ssize_t
5164 coordinates,
5165 y;
5166
5167 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5168 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5169 switch (primitive_info->primitive)
5170 {
5171 case PointPrimitive:
5172 {
5173 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5174 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5175 methods[primitive_info->method]);
5176 return;
5177 }
5178 case ColorPrimitive:
5179 {
5180 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5181 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5182 methods[primitive_info->method]);
5183 return;
5184 }
5185 case MattePrimitive:
5186 {
5187 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5188 "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5189 methods[primitive_info->method]);
5190 return;
5191 }
5192 case TextPrimitive:
5193 {
5194 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5195 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5196 return;
5197 }
5198 case ImagePrimitive:
5199 {
5200 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5201 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5202 return;
5203 }
5204 default:
5205 break;
5206 }
5207 coordinates=0;
5208 p=primitive_info[0].point;
5209 q.x=(-1.0);
5210 q.y=(-1.0);
5211 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5212 {
5213 point=primitive_info[i].point;
5214 if (coordinates <= 0)
5215 {
5216 coordinates=(ssize_t) primitive_info[i].coordinates;
5217 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5218 " begin open (%.20g)",(double) coordinates);
5219 p=point;
5220 }
5221 point=primitive_info[i].point;
5222 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5223 (fabs(q.y-point.y) >= MagickEpsilon))
5224 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5225 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5226 else
5227 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5228 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5229 q=point;
5230 coordinates--;
5231 if (coordinates > 0)
5232 continue;
5233 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5234 (fabs(p.y-point.y) >= MagickEpsilon))
5235 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5236 (double) coordinates);
5237 else
5238 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5239 (double) coordinates);
5240 }
5241}
5242
5243MagickExport MagickBooleanType DrawPrimitive(Image *image,
5244 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5245{
5246 CacheView
5247 *image_view;
5248
5250 *exception;
5251
5252 MagickStatusType
5253 status;
5254
5255 ssize_t
5256 i,
5257 x;
5258
5259 ssize_t
5260 y;
5261
5262 if (draw_info->debug != MagickFalse)
5263 {
5264 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5265 " begin draw-primitive");
5266 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5267 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5268 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5269 draw_info->affine.tx,draw_info->affine.ty);
5270 }
5271 exception=(&image->exception);
5272 status=MagickTrue;
5273 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5274 ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5275 (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5276 status=SetImageColorspace(image,sRGBColorspace);
5277 if (draw_info->compliance == SVGCompliance)
5278 {
5279 status&=SetImageClipMask(image,draw_info->clipping_mask);
5280 status&=SetImageMask(image,draw_info->composite_mask);
5281 }
5282 x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5283 y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5284 image_view=AcquireAuthenticCacheView(image,exception);
5285 switch (primitive_info->primitive)
5286 {
5287 case ColorPrimitive:
5288 {
5289 switch (primitive_info->method)
5290 {
5291 case PointMethod:
5292 default:
5293 {
5295 *q;
5296
5297 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5298 if (q == (PixelPacket *) NULL)
5299 break;
5300 (void) GetFillColor(draw_info,x,y,q);
5301 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5302 break;
5303 }
5304 case ReplaceMethod:
5305 {
5307 target;
5308
5309 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5310 for (y=0; y < (ssize_t) image->rows; y++)
5311 {
5313 *magick_restrict q;
5314
5315 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5316 exception);
5317 if (q == (PixelPacket *) NULL)
5318 break;
5319 for (x=0; x < (ssize_t) image->columns; x++)
5320 {
5321 if (IsColorSimilar(image,q,&target) == MagickFalse)
5322 {
5323 q++;
5324 continue;
5325 }
5326 (void) GetFillColor(draw_info,x,y,q);
5327 q++;
5328 }
5329 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5330 if (status == MagickFalse)
5331 break;
5332 }
5333 break;
5334 }
5335 case FloodfillMethod:
5336 case FillToBorderMethod:
5337 {
5339 target;
5340
5341 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5342 if (primitive_info->method == FillToBorderMethod)
5343 {
5344 target.red=(MagickRealType) draw_info->border_color.red;
5345 target.green=(MagickRealType) draw_info->border_color.green;
5346 target.blue=(MagickRealType) draw_info->border_color.blue;
5347 }
5348 status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5349 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5350 MagickTrue);
5351 break;
5352 }
5353 case ResetMethod:
5354 {
5355 for (y=0; y < (ssize_t) image->rows; y++)
5356 {
5358 *magick_restrict q;
5359
5360 ssize_t
5361 x;
5362
5363 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5364 exception);
5365 if (q == (PixelPacket *) NULL)
5366 break;
5367 for (x=0; x < (ssize_t) image->columns; x++)
5368 {
5369 (void) GetFillColor(draw_info,x,y,q);
5370 q++;
5371 }
5372 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5373 if (status == MagickFalse)
5374 break;
5375 }
5376 break;
5377 }
5378 }
5379 break;
5380 }
5381 case MattePrimitive:
5382 {
5383 if (image->matte == MagickFalse)
5384 status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5385 switch (primitive_info->method)
5386 {
5387 case PointMethod:
5388 default:
5389 {
5391 pixel;
5392
5394 *q;
5395
5396 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5397 if (q == (PixelPacket *) NULL)
5398 break;
5399 (void) GetFillColor(draw_info,x,y,&pixel);
5400 SetPixelOpacity(q,pixel.opacity);
5401 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5402 break;
5403 }
5404 case ReplaceMethod:
5405 {
5407 pixel,
5408 target;
5409
5410 status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5411 for (y=0; y < (ssize_t) image->rows; y++)
5412 {
5414 *magick_restrict q;
5415
5416 ssize_t
5417 x;
5418
5419 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5420 exception);
5421 if (q == (PixelPacket *) NULL)
5422 break;
5423 for (x=0; x < (ssize_t) image->columns; x++)
5424 {
5425 if (IsColorSimilar(image,q,&target) == MagickFalse)
5426 {
5427 q++;
5428 continue;
5429 }
5430 (void) GetFillColor(draw_info,x,y,&pixel);
5431 SetPixelOpacity(q,pixel.opacity);
5432 q++;
5433 }
5434 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5435 if (status == MagickFalse)
5436 break;
5437 }
5438 break;
5439 }
5440 case FloodfillMethod:
5441 case FillToBorderMethod:
5442 {
5444 target;
5445
5446 status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5447 if (primitive_info->method == FillToBorderMethod)
5448 {
5449 target.red=(MagickRealType) draw_info->border_color.red;
5450 target.green=(MagickRealType) draw_info->border_color.green;
5451 target.blue=(MagickRealType) draw_info->border_color.blue;
5452 }
5453 status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5454 y,primitive_info->method == FloodfillMethod ? MagickFalse :
5455 MagickTrue);
5456 break;
5457 }
5458 case ResetMethod:
5459 {
5461 pixel;
5462
5463 for (y=0; y < (ssize_t) image->rows; y++)
5464 {
5466 *magick_restrict q;
5467
5468 ssize_t
5469 x;
5470
5471 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5472 exception);
5473 if (q == (PixelPacket *) NULL)
5474 break;
5475 for (x=0; x < (ssize_t) image->columns; x++)
5476 {
5477 (void) GetFillColor(draw_info,x,y,&pixel);
5478 SetPixelOpacity(q,pixel.opacity);
5479 q++;
5480 }
5481 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5482 if (status == MagickFalse)
5483 break;
5484 }
5485 break;
5486 }
5487 }
5488 break;
5489 }
5490 case ImagePrimitive:
5491 {
5493 affine;
5494
5495 char
5496 composite_geometry[MaxTextExtent];
5497
5498 Image
5499 *composite_image,
5500 *composite_images;
5501
5502 ImageInfo
5503 *clone_info;
5504
5506 geometry;
5507
5508 ssize_t
5509 x1,
5510 y1;
5511
5512 if (primitive_info->text == (char *) NULL)
5513 break;
5514 clone_info=AcquireImageInfo();
5515 composite_images=(Image *) NULL;
5516 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5517 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5518 &image->exception);
5519 else
5520 if (*primitive_info->text != '\0')
5521 {
5522 const MagickInfo
5523 *magick_info;
5524
5525 MagickStatusType
5526 path_status;
5527
5528 struct stat
5529 attributes;
5530
5531 /*
5532 Read composite image.
5533 */
5534 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5535 MagickPathExtent);
5536 (void) SetImageInfo(clone_info,1,exception);
5537 magick_info=GetMagickInfo(clone_info->magick,exception);
5538 if ((magick_info != (const MagickInfo*) NULL) &&
5539 (LocaleCompare(magick_info->magick_module,"SVG") == 0))
5540 {
5541 (void) ThrowMagickException(exception,GetMagickModule(),
5542 CorruptImageError,"ImageTypeNotSupported","`%s'",
5543 clone_info->filename);
5544 clone_info=DestroyImageInfo(clone_info);
5545 break;
5546 }
5547 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5548 MagickPathExtent);
5549 if (clone_info->size != (char *) NULL)
5550 clone_info->size=DestroyString(clone_info->size);
5551 if (clone_info->extract != (char *) NULL)
5552 clone_info->extract=DestroyString(clone_info->extract);
5553 path_status=GetPathAttributes(clone_info->filename,&attributes);
5554 if (path_status != MagickFalse)
5555 {
5556 if (S_ISCHR(attributes.st_mode) == 0)
5557 composite_images=ReadImage(clone_info,exception);
5558 else
5559 (void) ThrowMagickException(exception,GetMagickModule(),
5560 FileOpenError,"UnableToOpenFile","`%s'",
5561 clone_info->filename);
5562 }
5563 else
5564 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5565 (LocaleCompare(clone_info->magick,"http") != 0) &&
5566 (LocaleCompare(clone_info->magick,"https") != 0) &&
5567 (LocaleCompare(clone_info->magick,"vid") != 0))
5568 composite_images=ReadImage(clone_info,exception);
5569 else
5570 (void) ThrowMagickException(exception,GetMagickModule(),
5571 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5572 }
5573 clone_info=DestroyImageInfo(clone_info);
5574 if (composite_images == (Image *) NULL)
5575 {
5576 status=0;
5577 break;
5578 }
5579 composite_image=RemoveFirstImageFromList(&composite_images);
5580 composite_images=DestroyImageList(composite_images);
5581 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5582 NULL,(void *) NULL);
5583 x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5584 y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5585 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5586 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5587 {
5588 char
5589 geometry[MaxTextExtent];
5590
5591 /*
5592 Resize image.
5593 */
5594 (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5595 primitive_info[1].point.x,primitive_info[1].point.y);
5596 composite_image->filter=image->filter;
5597 status&=TransformImage(&composite_image,(char *) NULL,geometry);
5598 }
5599 if (composite_image->matte == MagickFalse)
5600 status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5601 if (draw_info->opacity != OpaqueOpacity)
5602 status&=SetImageOpacity(composite_image,draw_info->opacity);
5603 SetGeometry(image,&geometry);
5604 image->gravity=draw_info->gravity;
5605 geometry.x=x;
5606 geometry.y=y;
5607 (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5608 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5609 composite_image->rows,(double) geometry.x,(double) geometry.y);
5610 (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5611 &image->exception);
5612 affine=draw_info->affine;
5613 affine.tx=(double) geometry.x;
5614 affine.ty=(double) geometry.y;
5615 composite_image->interpolate=image->interpolate;
5616 if ((draw_info->compose == OverCompositeOp) ||
5617 (draw_info->compose == SrcOverCompositeOp))
5618 status&=DrawAffineImage(image,composite_image,&affine);
5619 else
5620 status&=CompositeImage(image,draw_info->compose,composite_image,
5621 geometry.x,geometry.y);
5622 composite_image=DestroyImage(composite_image);
5623 break;
5624 }
5625 case PointPrimitive:
5626 {
5628 fill_color;
5629
5631 *q;
5632
5633 if ((y < 0) || (y >= (ssize_t) image->rows))
5634 break;
5635 if ((x < 0) || (x >= (ssize_t) image->columns))
5636 break;
5637 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5638 if (q == (PixelPacket *) NULL)
5639 break;
5640 (void) GetFillColor(draw_info,x,y,&fill_color);
5641 MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5642 (MagickRealType) q->opacity,q);
5643 status&=SyncCacheViewAuthenticPixels(image_view,exception);
5644 break;
5645 }
5646 case TextPrimitive:
5647 {
5648 char
5649 geometry[MaxTextExtent];
5650
5651 DrawInfo
5652 *clone_info;
5653
5654 if (primitive_info->text == (char *) NULL)
5655 break;
5656 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5657 (void) CloneString(&clone_info->text,primitive_info->text);
5658 (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5659 primitive_info->point.x,primitive_info->point.y);
5660 (void) CloneString(&clone_info->geometry,geometry);
5661 status&=AnnotateImage(image,clone_info);
5662 clone_info=DestroyDrawInfo(clone_info);
5663 break;
5664 }
5665 default:
5666 {
5667 double
5668 mid,
5669 scale;
5670
5671 DrawInfo
5672 *clone_info;
5673
5674 if (IsEventLogging() != MagickFalse)
5675 LogPrimitiveInfo(primitive_info);
5676 scale=ExpandAffine(&draw_info->affine);
5677 if ((draw_info->dash_pattern != (double *) NULL) &&
5678 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5679 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5680 (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5681 {
5682 /*
5683 Draw dash polygon.
5684 */
5685 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5686 clone_info->stroke_width=0.0;
5687 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5688 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5689 clone_info=DestroyDrawInfo(clone_info);
5690 if (status != MagickFalse)
5691 status&=DrawDashPolygon(draw_info,primitive_info,image);
5692 break;
5693 }
5694 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5695 if ((mid > 1.0) &&
5696 ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5697 (draw_info->stroke_pattern != (Image *) NULL)))
5698 {
5699 double
5700 x,
5701 y;
5702
5703 MagickBooleanType
5704 closed_path;
5705
5706 /*
5707 Draw strokes while respecting line cap/join attributes.
5708 */
5709 closed_path=primitive_info[0].closed_subpath;
5710 i=(ssize_t) primitive_info[0].coordinates;
5711 x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5712 y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5713 if ((x < MagickEpsilon) && (y < MagickEpsilon))
5714 closed_path=MagickTrue;
5715 if ((((draw_info->linecap == RoundCap) ||
5716 (closed_path != MagickFalse)) &&
5717 (draw_info->linejoin == RoundJoin)) ||
5718 (primitive_info[i].primitive != UndefinedPrimitive))
5719 {
5720 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5721 break;
5722 }
5723 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5724 clone_info->stroke_width=0.0;
5725 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5726 status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5727 clone_info=DestroyDrawInfo(clone_info);
5728 if (status != MagickFalse)
5729 status&=DrawStrokePolygon(image,draw_info,primitive_info);
5730 break;
5731 }
5732 status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5733 break;
5734 }
5735 }
5736 image_view=DestroyCacheView(image_view);
5737 if (draw_info->compliance == SVGCompliance)
5738 {
5739 status&=SetImageClipMask(image,(Image *) NULL);
5740 status&=SetImageMask(image,(Image *) NULL);
5741 }
5742 if (draw_info->debug != MagickFalse)
5743 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5744 return(status != 0 ? MagickTrue : MagickFalse);
5745}
5746
5747/*
5748%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5749% %
5750% %
5751% %
5752+ D r a w S t r o k e P o l y g o n %
5753% %
5754% %
5755% %
5756%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5757%
5758% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5759% the image while respecting the line cap and join attributes.
5760%
5761% The format of the DrawStrokePolygon method is:
5762%
5763% MagickBooleanType DrawStrokePolygon(Image *image,
5764% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5765%
5766% A description of each parameter follows:
5767%
5768% o image: the image.
5769%
5770% o draw_info: the draw info.
5771%
5772% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5773%
5774%
5775*/
5776
5777static MagickBooleanType DrawRoundLinecap(Image *image,
5778 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5779{
5781 linecap[5];
5782
5783 ssize_t
5784 i;
5785
5786 for (i=0; i < 4; i++)
5787 linecap[i]=(*primitive_info);
5788 linecap[0].coordinates=4;
5789 linecap[1].point.x+=2.0*MagickEpsilon;
5790 linecap[2].point.x+=2.0*MagickEpsilon;
5791 linecap[2].point.y+=2.0*MagickEpsilon;
5792 linecap[3].point.y+=2.0*MagickEpsilon;
5793 linecap[4].primitive=UndefinedPrimitive;
5794 return(DrawPolygonPrimitive(image,draw_info,linecap));
5795}
5796
5797static MagickBooleanType DrawStrokePolygon(Image *image,
5798 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5799{
5800 DrawInfo
5801 *clone_info;
5802
5803 MagickBooleanType
5804 closed_path;
5805
5806 MagickStatusType
5807 status;
5808
5810 *stroke_polygon;
5811
5812 const PrimitiveInfo
5813 *p,
5814 *q;
5815
5816 /*
5817 Draw stroked polygon.
5818 */
5819 if (draw_info->debug != MagickFalse)
5820 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5821 " begin draw-stroke-polygon");
5822 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5823 clone_info->fill=draw_info->stroke;
5824 if (clone_info->fill_pattern != (Image *) NULL)
5825 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5826 if (clone_info->stroke_pattern != (Image *) NULL)
5827 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5828 MagickTrue,&clone_info->stroke_pattern->exception);
5829 clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5830 clone_info->stroke_width=0.0;
5831 clone_info->fill_rule=NonZeroRule;
5832 status=MagickTrue;
5833 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates)
5834 {
5835 if (p->coordinates == 1)
5836 continue;
5837 stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5838 if (stroke_polygon == (PrimitiveInfo *) NULL)
5839 {
5840 status=0;
5841 break;
5842 }
5843 status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5844 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5845 if (status == 0)
5846 break;
5847 q=p+p->coordinates-1;
5848 closed_path=p->closed_subpath;
5849 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5850 {
5851 status&=DrawRoundLinecap(image,draw_info,p);
5852 status&=DrawRoundLinecap(image,draw_info,q);
5853 }
5854 }
5855 clone_info=DestroyDrawInfo(clone_info);
5856 if (draw_info->debug != MagickFalse)
5857 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5858 " end draw-stroke-polygon");
5859 return(status != 0 ? MagickTrue : MagickFalse);
5860}
5861
5862/*
5863%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5864% %
5865% %
5866% %
5867% G e t A f f i n e M a t r i x %
5868% %
5869% %
5870% %
5871%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5872%
5873% GetAffineMatrix() returns an AffineMatrix initialized to the identity
5874% matrix.
5875%
5876% The format of the GetAffineMatrix method is:
5877%
5878% void GetAffineMatrix(AffineMatrix *affine_matrix)
5879%
5880% A description of each parameter follows:
5881%
5882% o affine_matrix: the affine matrix.
5883%
5884*/
5885MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5886{
5887 assert(affine_matrix != (AffineMatrix *) NULL);
5888 if (IsEventLogging() != MagickFalse)
5889 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5890 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5891 affine_matrix->sx=1.0;
5892 affine_matrix->sy=1.0;
5893}
5894
5895/*
5896%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5897% %
5898% %
5899% %
5900+ G e t D r a w I n f o %
5901% %
5902% %
5903% %
5904%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5905%
5906% GetDrawInfo() initializes draw_info to default values from image_info.
5907%
5908% The format of the GetDrawInfo method is:
5909%
5910% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5911%
5912% A description of each parameter follows:
5913%
5914% o image_info: the image info..
5915%
5916% o draw_info: the draw info.
5917%
5918*/
5919MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5920{
5921 char
5922 *next_token;
5923
5924 const char
5925 *option;
5926
5928 *exception;
5929
5930 /*
5931 Initialize draw attributes.
5932 */
5933 assert(draw_info != (DrawInfo *) NULL);
5934 if (IsEventLogging() != MagickFalse)
5935 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5936 (void) memset(draw_info,0,sizeof(*draw_info));
5937 draw_info->image_info=CloneImageInfo(image_info);
5938 GetAffineMatrix(&draw_info->affine);
5939 exception=AcquireExceptionInfo();
5940 (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5941 (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5942 draw_info->stroke_antialias=draw_info->image_info->antialias;
5943 draw_info->stroke_width=1.0;
5944 draw_info->fill_rule=EvenOddRule;
5945 draw_info->opacity=OpaqueOpacity;
5946 draw_info->fill_opacity=OpaqueOpacity;
5947 draw_info->stroke_opacity=OpaqueOpacity;
5948 draw_info->linecap=ButtCap;
5949 draw_info->linejoin=MiterJoin;
5950 draw_info->miterlimit=10;
5951 draw_info->decorate=NoDecoration;
5952 if (draw_info->image_info->font != (char *) NULL)
5953 draw_info->font=AcquireString(draw_info->image_info->font);
5954 if (draw_info->image_info->density != (char *) NULL)
5955 draw_info->density=AcquireString(draw_info->image_info->density);
5956 draw_info->text_antialias=draw_info->image_info->antialias;
5957 draw_info->pointsize=12.0;
5958 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
5959 draw_info->pointsize=draw_info->image_info->pointsize;
5960 draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5961 draw_info->border_color=draw_info->image_info->border_color;
5962 draw_info->compose=OverCompositeOp;
5963 if (draw_info->image_info->server_name != (char *) NULL)
5964 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
5965 draw_info->render=MagickTrue;
5966 draw_info->clip_path=MagickFalse;
5967 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5968 MagickTrue : MagickFalse;
5969 option=GetImageOption(draw_info->image_info,"direction");
5970 if (option != (const char *) NULL)
5971 draw_info->direction=(DirectionType) ParseCommandOption(
5972 MagickDirectionOptions,MagickFalse,option);
5973 else
5974 draw_info->direction=UndefinedDirection;
5975 option=GetImageOption(draw_info->image_info,"encoding");
5976 if (option != (const char *) NULL)
5977 (void) CloneString(&draw_info->encoding,option);
5978 option=GetImageOption(draw_info->image_info,"family");
5979 if (option != (const char *) NULL)
5980 (void) CloneString(&draw_info->family,option);
5981 option=GetImageOption(draw_info->image_info,"fill");
5982 if (option != (const char *) NULL)
5983 (void) QueryColorDatabase(option,&draw_info->fill,exception);
5984 option=GetImageOption(draw_info->image_info,"gravity");
5985 if (option != (const char *) NULL)
5986 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5987 MagickFalse,option);
5988 option=GetImageOption(draw_info->image_info,"interline-spacing");
5989 if (option != (const char *) NULL)
5990 draw_info->interline_spacing=GetDrawValue(option,&next_token);
5991 option=GetImageOption(draw_info->image_info,"interword-spacing");
5992 if (option != (const char *) NULL)
5993 draw_info->interword_spacing=GetDrawValue(option,&next_token);
5994 option=GetImageOption(draw_info->image_info,"kerning");
5995 if (option != (const char *) NULL)
5996 draw_info->kerning=GetDrawValue(option,&next_token);
5997 option=GetImageOption(draw_info->image_info,"stroke");
5998 if (option != (const char *) NULL)
5999 (void) QueryColorDatabase(option,&draw_info->stroke,exception);
6000 option=GetImageOption(draw_info->image_info,"strokewidth");
6001 if (option != (const char *) NULL)
6002 draw_info->stroke_width=GetDrawValue(option,&next_token);
6003 option=GetImageOption(draw_info->image_info,"style");
6004 if (option != (const char *) NULL)
6005 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6006 MagickFalse,option);
6007 option=GetImageOption(draw_info->image_info,"undercolor");
6008 if (option != (const char *) NULL)
6009 (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
6010 option=GetImageOption(draw_info->image_info,"weight");
6011 if (option != (const char *) NULL)
6012 {
6013 ssize_t
6014 weight;
6015
6016 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6017 if (weight == -1)
6018 weight=(ssize_t) StringToUnsignedLong(option);
6019 draw_info->weight=(size_t) weight;
6020 }
6021 exception=DestroyExceptionInfo(exception);
6022 draw_info->signature=MagickCoreSignature;
6023}
6024
6025/*
6026%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6027% %
6028% %
6029% %
6030+ P e r m u t a t e %
6031% %
6032% %
6033% %
6034%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6035%
6036% Permutate() returns the permutation of the (n,k).
6037%
6038% The format of the Permutate method is:
6039%
6040% void Permutate(ssize_t n,ssize_t k)
6041%
6042% A description of each parameter follows:
6043%
6044% o n:
6045%
6046% o k:
6047%
6048%
6049*/
6050static inline double Permutate(const ssize_t n,const ssize_t k)
6051{
6052 double
6053 r;
6054
6055 ssize_t
6056 i;
6057
6058 r=1.0;
6059 for (i=k+1; i <= n; i++)
6060 r*=i;
6061 for (i=1; i <= (n-k); i++)
6062 r/=i;
6063 return(r);
6064}
6065
6066/*
6067%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6068% %
6069% %
6070% %
6071+ T r a c e P r i m i t i v e %
6072% %
6073% %
6074% %
6075%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6076%
6077% TracePrimitive is a collection of methods for generating graphic
6078% primitives such as arcs, ellipses, paths, etc.
6079%
6080*/
6081
6082static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6083 const PointInfo end,const PointInfo degrees)
6084{
6085 PointInfo
6086 center,
6087 radius;
6088
6089 center.x=0.5*(end.x+start.x);
6090 center.y=0.5*(end.y+start.y);
6091 radius.x=fabs(center.x-start.x);
6092 radius.y=fabs(center.y-start.y);
6093 return(TraceEllipse(mvg_info,center,radius,degrees));
6094}
6095
6096static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6097 const PointInfo end,const PointInfo arc,const double angle,
6098 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6099{
6100 double
6101 alpha,
6102 beta,
6103 delta,
6104 factor,
6105 gamma,
6106 theta;
6107
6108 MagickStatusType
6109 status;
6110
6111 PointInfo
6112 center,
6113 points[3],
6114 radii;
6115
6116 double
6117 cosine,
6118 sine;
6119
6121 *primitive_info;
6122
6124 *p;
6125
6126 ssize_t
6127 i;
6128
6129 size_t
6130 arc_segments;
6131
6132 ssize_t
6133 offset;
6134
6135 offset=mvg_info->offset;
6136 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6137 primitive_info->coordinates=0;
6138 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6139 (fabs(start.y-end.y) < MagickEpsilon))
6140 return(TracePoint(primitive_info,end));
6141 radii.x=fabs(arc.x);
6142 radii.y=fabs(arc.y);
6143 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6144 return(TraceLine(primitive_info,start,end));
6145 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6146 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6147 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6148 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6149 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6150 (radii.y*radii.y);
6151 if (delta < MagickEpsilon)
6152 return(TraceLine(primitive_info,start,end));
6153 if (delta > 1.0)
6154 {
6155 radii.x*=sqrt((double) delta);
6156 radii.y*=sqrt((double) delta);
6157 }
6158 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6159 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6160 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6161 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6162 alpha=points[1].x-points[0].x;
6163 beta=points[1].y-points[0].y;
6164 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6165 return(TraceLine(primitive_info,start,end));
6166 factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6167 if (factor <= 0.0)
6168 factor=0.0;
6169 else
6170 {
6171 factor=sqrt((double) factor);
6172 if (sweep == large_arc)
6173 factor=(-factor);
6174 }
6175 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6176 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6177 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6178 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6179 if ((theta < 0.0) && (sweep != MagickFalse))
6180 theta+=2.0*MagickPI;
6181 else
6182 if ((theta > 0.0) && (sweep == MagickFalse))
6183 theta-=2.0*MagickPI;
6184 arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6185 MagickPI+MagickEpsilon)))));
6186 p=primitive_info;
6187 status=MagickTrue;
6188 for (i=0; i < (ssize_t) arc_segments; i++)
6189 {
6190 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6191 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6192 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6193 sin(fmod((double) beta,DegreesToRadians(360.0)));
6194 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6195 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6196 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6197 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6198 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6199 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6200 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6201 theta/arc_segments),DegreesToRadians(360.0))));
6202 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6203 theta/arc_segments),DegreesToRadians(360.0))));
6204 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6205 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6206 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6207 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6208 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6209 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6210 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6211 points[0].y);
6212 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6213 points[0].y);
6214 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6215 points[1].y);
6216 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6217 points[1].y);
6218 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6219 points[2].y);
6220 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6221 points[2].y);
6222 if (i == (ssize_t) (arc_segments-1))
6223 (p+3)->point=end;
6224 status&=TraceBezier(mvg_info,4);
6225 if (status == 0)
6226 break;
6227 p=(*mvg_info->primitive_info)+mvg_info->offset;
6228 mvg_info->offset+=p->coordinates;
6229 p+=p->coordinates;
6230 }
6231 if (status == 0)
6232 return(MagickFalse);
6233 mvg_info->offset=offset;
6234 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6235 primitive_info->coordinates=(size_t) (p-primitive_info);
6236 primitive_info->closed_subpath=MagickFalse;
6237 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6238 {
6239 p->primitive=primitive_info->primitive;
6240 p--;
6241 }
6242 return(MagickTrue);
6243}
6244
6245static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6246 const size_t number_coordinates)
6247{
6248 double
6249 alpha,
6250 *coefficients,
6251 weight;
6252
6253 PointInfo
6254 end,
6255 point,
6256 *points;
6257
6259 *primitive_info;
6260
6262 *p;
6263
6264 ssize_t
6265 i,
6266 j;
6267
6268 size_t
6269 control_points,
6270 quantum;
6271
6272 /*
6273 Allocate coefficients.
6274 */
6275 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6276 quantum=number_coordinates;
6277 for (i=0; i < (ssize_t) number_coordinates; i++)
6278 {
6279 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6280 {
6281 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6282 if (alpha > (double) MAGICK_SSIZE_MAX)
6283 {
6284 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6285 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6286 return(MagickFalse);
6287 }
6288 if (alpha > (double) quantum)
6289 quantum=(size_t) alpha;
6290 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6291 if (alpha > (double) MAGICK_SSIZE_MAX)
6292 {
6293 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6294 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6295 return(MagickFalse);
6296 }
6297 if (alpha > (double) quantum)
6298 quantum=(size_t) alpha;
6299 }
6300 }
6301 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6302 sizeof(*coefficients));
6303 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6304 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6305 sizeof(*points));
6306 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6307 {
6308 if (points != (PointInfo *) NULL)
6309 points=(PointInfo *) RelinquishMagickMemory(points);
6310 if (coefficients != (double *) NULL)
6311 coefficients=(double *) RelinquishMagickMemory(coefficients);
6312 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6313 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6314 return(MagickFalse);
6315 }
6316 control_points=quantum*number_coordinates;
6317 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6318 {
6319 points=(PointInfo *) RelinquishMagickMemory(points);
6320 coefficients=(double *) RelinquishMagickMemory(coefficients);
6321 return(MagickFalse);
6322 }
6323 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6324 /*
6325 Compute bezier points.
6326 */
6327 end=primitive_info[number_coordinates-1].point;
6328 for (i=0; i < (ssize_t) number_coordinates; i++)
6329 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6330 weight=0.0;
6331 for (i=0; i < (ssize_t) control_points; i++)
6332 {
6333 p=primitive_info;
6334 point.x=0.0;
6335 point.y=0.0;
6336 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6337 for (j=0; j < (ssize_t) number_coordinates; j++)
6338 {
6339 point.x+=alpha*coefficients[j]*p->point.x;
6340 point.y+=alpha*coefficients[j]*p->point.y;
6341 alpha*=weight/(1.0-weight);
6342 p++;
6343 }
6344 points[i]=point;
6345 weight+=1.0/control_points;
6346 }
6347 /*
6348 Bezier curves are just short segmented polys.
6349 */
6350 p=primitive_info;
6351 for (i=0; i < (ssize_t) control_points; i++)
6352 {
6353 if (TracePoint(p,points[i]) == MagickFalse)
6354 {
6355 points=(PointInfo *) RelinquishMagickMemory(points);
6356 coefficients=(double *) RelinquishMagickMemory(coefficients);
6357 return(MagickFalse);
6358 }
6359 p+=p->coordinates;
6360 }
6361 if (TracePoint(p,end) == MagickFalse)
6362 {
6363 points=(PointInfo *) RelinquishMagickMemory(points);
6364 coefficients=(double *) RelinquishMagickMemory(coefficients);
6365 return(MagickFalse);
6366 }
6367 p+=p->coordinates;
6368 primitive_info->coordinates=(size_t) (p-primitive_info);
6369 primitive_info->closed_subpath=MagickFalse;
6370 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6371 {
6372 p->primitive=primitive_info->primitive;
6373 p--;
6374 }
6375 points=(PointInfo *) RelinquishMagickMemory(points);
6376 coefficients=(double *) RelinquishMagickMemory(coefficients);
6377 return(MagickTrue);
6378}
6379
6380static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6381 const PointInfo end)
6382{
6383 double
6384 alpha,
6385 beta,
6386 radius;
6387
6388 PointInfo
6389 offset,
6390 degrees;
6391
6392 alpha=end.x-start.x;
6393 beta=end.y-start.y;
6394 radius=hypot((double) alpha,(double) beta);
6395 offset.x=(double) radius;
6396 offset.y=(double) radius;
6397 degrees.x=0.0;
6398 degrees.y=360.0;
6399 return(TraceEllipse(mvg_info,start,offset,degrees));
6400}
6401
6402static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6403 const PointInfo radii,const PointInfo arc)
6404{
6405 double
6406 coordinates,
6407 delta,
6408 step,
6409 x,
6410 y;
6411
6412 PointInfo
6413 angle,
6414 point;
6415
6417 *primitive_info;
6418
6420 *p;
6421
6422 ssize_t
6423 i;
6424
6425 /*
6426 Ellipses are just short segmented polys.
6427 */
6428 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6429 primitive_info->coordinates=0;
6430 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6431 return(MagickTrue);
6432 delta=2.0*PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6433 step=MagickPI/8.0;
6434 if ((delta >= 0.0) && (delta < (MagickPI/8.0)))
6435 step=MagickPI/4.0/(MagickPI*PerceptibleReciprocal(delta)/2.0);
6436 angle.x=DegreesToRadians(arc.x);
6437 y=arc.y;
6438 while (y < arc.x)
6439 y+=360.0;
6440 angle.y=DegreesToRadians(y);
6441 coordinates=ceil((angle.y-angle.x)/step+1.0);
6442 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6443 return(MagickFalse);
6444 i=0;
6445 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6446 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6447 {
6448 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6449 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6450 if (i++ >= (ssize_t) coordinates)
6451 break;
6452 if (TracePoint(p,point) == MagickFalse)
6453 return(MagickFalse);
6454 p+=p->coordinates;
6455 }
6456 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6457 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6458 if (TracePoint(p,point) == MagickFalse)
6459 return(MagickFalse);
6460 p+=p->coordinates;
6461 primitive_info->coordinates=(size_t) (p-primitive_info);
6462 primitive_info->closed_subpath=MagickFalse;
6463 x=fabs(primitive_info[0].point.x-
6464 primitive_info[primitive_info->coordinates-1].point.x);
6465 y=fabs(primitive_info[0].point.y-
6466 primitive_info[primitive_info->coordinates-1].point.y);
6467 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6468 primitive_info->closed_subpath=MagickTrue;
6469 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6470 {
6471 p->primitive=primitive_info->primitive;
6472 p--;
6473 }
6474 return(MagickTrue);
6475}
6476
6477static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6478 const PointInfo start,const PointInfo end)
6479{
6480 if (TracePoint(primitive_info,start) == MagickFalse)
6481 return(MagickFalse);
6482 if (TracePoint(primitive_info+1,end) == MagickFalse)
6483 return(MagickFalse);
6484 (primitive_info+1)->primitive=primitive_info->primitive;
6485 primitive_info->coordinates=2;
6486 primitive_info->closed_subpath=MagickFalse;
6487 return(MagickTrue);
6488}
6489
6490static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6491{
6492 char
6493 *next_token,
6494 token[MaxTextExtent] = "";
6495
6496 const char
6497 *p;
6498
6499 double
6500 x,
6501 y;
6502
6503 int
6504 attribute,
6505 last_attribute;
6506
6507 MagickStatusType
6508 status;
6509
6510 PointInfo
6511 end = {0.0, 0.0},
6512 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6513 point = {0.0, 0.0},
6514 start = {0.0, 0.0};
6515
6517 *primitive_info;
6518
6519 PrimitiveType
6520 primitive_type;
6521
6523 *q;
6524
6525 ssize_t
6526 i;
6527
6528 size_t
6529 number_coordinates,
6530 z_count;
6531
6532 ssize_t
6533 subpath_offset;
6534
6535 subpath_offset=mvg_info->offset;
6536 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6537 status=MagickTrue;
6538 attribute=0;
6539 number_coordinates=0;
6540 z_count=0;
6541 *token='\0';
6542 primitive_type=primitive_info->primitive;
6543 q=primitive_info;
6544 for (p=path; *p != '\0'; )
6545 {
6546 if (status == MagickFalse)
6547 break;
6548 while (isspace((int) ((unsigned char) *p)) != 0)
6549 p++;
6550 if (*p == '\0')
6551 break;
6552 last_attribute=attribute;
6553 attribute=(int) (*p++);
6554 switch (attribute)
6555 {
6556 case 'a':
6557 case 'A':
6558 {
6559 double
6560 angle = 0.0;
6561
6562 MagickBooleanType
6563 large_arc = MagickFalse,
6564 sweep = MagickFalse;
6565
6566 PointInfo
6567 arc = {0.0, 0.0};
6568
6569 /*
6570 Elliptical arc.
6571 */
6572 do
6573 {
6574 (void) GetNextToken(p,&p,MaxTextExtent,token);
6575 if (*token == ',')
6576 (void) GetNextToken(p,&p,MaxTextExtent,token);
6577 arc.x=GetDrawValue(token,&next_token);
6578 if (token == next_token)
6579 ThrowPointExpectedException(image,token);
6580 (void) GetNextToken(p,&p,MaxTextExtent,token);
6581 if (*token == ',')
6582 (void) GetNextToken(p,&p,MaxTextExtent,token);
6583 arc.y=GetDrawValue(token,&next_token);
6584 if (token == next_token)
6585 ThrowPointExpectedException(image,token);
6586 (void) GetNextToken(p,&p,MaxTextExtent,token);
6587 if (*token == ',')
6588 (void) GetNextToken(p,&p,MaxTextExtent,token);
6589 angle=GetDrawValue(token,&next_token);
6590 if (token == next_token)
6591 ThrowPointExpectedException(image,token);
6592 (void) GetNextToken(p,&p,MaxTextExtent,token);
6593 if (*token == ',')
6594 (void) GetNextToken(p,&p,MaxTextExtent,token);
6595 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6596 (void) GetNextToken(p,&p,MaxTextExtent,token);
6597 if (*token == ',')
6598 (void) GetNextToken(p,&p,MaxTextExtent,token);
6599 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6600 if (*token == ',')
6601 (void) GetNextToken(p,&p,MaxTextExtent,token);
6602 (void) GetNextToken(p,&p,MaxTextExtent,token);
6603 if (*token == ',')
6604 (void) GetNextToken(p,&p,MaxTextExtent,token);
6605 x=GetDrawValue(token,&next_token);
6606 if (token == next_token)
6607 ThrowPointExpectedException(image,token);
6608 (void) GetNextToken(p,&p,MaxTextExtent,token);
6609 if (*token == ',')
6610 (void) GetNextToken(p,&p,MaxTextExtent,token);
6611 y=GetDrawValue(token,&next_token);
6612 if (token == next_token)
6613 ThrowPointExpectedException(image,token);
6614 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6615 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6616 status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6617 q=(*mvg_info->primitive_info)+mvg_info->offset;
6618 mvg_info->offset+=q->coordinates;
6619 q+=q->coordinates;
6620 point=end;
6621 while (isspace((int) ((unsigned char) *p)) != 0)
6622 p++;
6623 if (*p == ',')
6624 p++;
6625 } while (IsPoint(p) != MagickFalse);
6626 break;
6627 }
6628 case 'c':
6629 case 'C':
6630 {
6631 /*
6632 Cubic Bézier curve.
6633 */
6634 do
6635 {
6636 points[0]=point;
6637 for (i=1; i < 4; i++)
6638 {
6639 (void) GetNextToken(p,&p,MaxTextExtent,token);
6640 if (*token == ',')
6641 (void) GetNextToken(p,&p,MaxTextExtent,token);
6642 x=GetDrawValue(token,&next_token);
6643 if (token == next_token)
6644 ThrowPointExpectedException(image,token);
6645 (void) GetNextToken(p,&p,MaxTextExtent,token);
6646 if (*token == ',')
6647 (void) GetNextToken(p,&p,MaxTextExtent,token);
6648 y=GetDrawValue(token,&next_token);
6649 if (token == next_token)
6650 ThrowPointExpectedException(image,token);
6651 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6652 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6653 points[i]=end;
6654 }
6655 for (i=0; i < 4; i++)
6656 (q+i)->point=points[i];
6657 if (TraceBezier(mvg_info,4) == MagickFalse)
6658 return(-1);
6659 q=(*mvg_info->primitive_info)+mvg_info->offset;
6660 mvg_info->offset+=q->coordinates;
6661 q+=q->coordinates;
6662 point=end;
6663 while (isspace((int) ((unsigned char) *p)) != 0)
6664 p++;
6665 if (*p == ',')
6666 p++;
6667 } while (IsPoint(p) != MagickFalse);
6668 break;
6669 }
6670 case 'H':
6671 case 'h':
6672 {
6673 do
6674 {
6675 (void) GetNextToken(p,&p,MaxTextExtent,token);
6676 if (*token == ',')
6677 (void) GetNextToken(p,&p,MaxTextExtent,token);
6678 x=GetDrawValue(token,&next_token);
6679 if (token == next_token)
6680 ThrowPointExpectedException(image,token);
6681 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6682 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6683 return(-1);
6684 q=(*mvg_info->primitive_info)+mvg_info->offset;
6685 if (TracePoint(q,point) == MagickFalse)
6686 return(-1);
6687 mvg_info->offset+=q->coordinates;
6688 q+=q->coordinates;
6689 while (isspace((int) ((unsigned char) *p)) != 0)
6690 p++;
6691 if (*p == ',')
6692 p++;
6693 } while (IsPoint(p) != MagickFalse);
6694 break;
6695 }
6696 case 'l':
6697 case 'L':
6698 {
6699 /*
6700 Line to.
6701 */
6702 do
6703 {
6704 (void) GetNextToken(p,&p,MaxTextExtent,token);
6705 if (*token == ',')
6706 (void) GetNextToken(p,&p,MaxTextExtent,token);
6707 x=GetDrawValue(token,&next_token);
6708 if (token == next_token)
6709 ThrowPointExpectedException(image,token);
6710 (void) GetNextToken(p,&p,MaxTextExtent,token);
6711 if (*token == ',')
6712 (void) GetNextToken(p,&p,MaxTextExtent,token);
6713 y=GetDrawValue(token,&next_token);
6714 if (token == next_token)
6715 ThrowPointExpectedException(image,token);
6716 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6717 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6718 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6719 return(-1);
6720 q=(*mvg_info->primitive_info)+mvg_info->offset;
6721 if (TracePoint(q,point) == MagickFalse)
6722 return(-1);
6723 mvg_info->offset+=q->coordinates;
6724 q+=q->coordinates;
6725 while (isspace((int) ((unsigned char) *p)) != 0)
6726 p++;
6727 if (*p == ',')
6728 p++;
6729 } while (IsPoint(p) != MagickFalse);
6730 break;
6731 }
6732 case 'M':
6733 case 'm':
6734 {
6735 /*
6736 Move to.
6737 */
6738 if (mvg_info->offset != subpath_offset)
6739 {
6740 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6741 primitive_info->coordinates=(size_t) (q-primitive_info);
6742 number_coordinates+=primitive_info->coordinates;
6743 primitive_info=q;
6744 subpath_offset=mvg_info->offset;
6745 }
6746 i=0;
6747 do
6748 {
6749 (void) GetNextToken(p,&p,MaxTextExtent,token);
6750 if (*token == ',')
6751 (void) GetNextToken(p,&p,MaxTextExtent,token);
6752 x=GetDrawValue(token,&next_token);
6753 if (token == next_token)
6754 ThrowPointExpectedException(image,token);
6755 (void) GetNextToken(p,&p,MaxTextExtent,token);
6756 if (*token == ',')
6757 (void) GetNextToken(p,&p,MaxTextExtent,token);
6758 y=GetDrawValue(token,&next_token);
6759 if (token == next_token)
6760 ThrowPointExpectedException(image,token);
6761 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6762 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6763 if (i == 0)
6764 start=point;
6765 i++;
6766 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6767 return(-1);
6768 q=(*mvg_info->primitive_info)+mvg_info->offset;
6769 if (TracePoint(q,point) == MagickFalse)
6770 return(-1);
6771 mvg_info->offset+=q->coordinates;
6772 q+=q->coordinates;
6773 while (isspace((int) ((unsigned char) *p)) != 0)
6774 p++;
6775 if (*p == ',')
6776 p++;
6777 } while (IsPoint(p) != MagickFalse);
6778 break;
6779 }
6780 case 'q':
6781 case 'Q':
6782 {
6783 /*
6784 Quadratic Bézier curve.
6785 */
6786 do
6787 {
6788 points[0]=point;
6789 for (i=1; i < 3; i++)
6790 {
6791 (void) GetNextToken(p,&p,MaxTextExtent,token);
6792 if (*token == ',')
6793 (void) GetNextToken(p,&p,MaxTextExtent,token);
6794 x=GetDrawValue(token,&next_token);
6795 if (token == next_token)
6796 ThrowPointExpectedException(image,token);
6797 (void) GetNextToken(p,&p,MaxTextExtent,token);
6798 if (*token == ',')
6799 (void) GetNextToken(p,&p,MaxTextExtent,token);
6800 y=GetDrawValue(token,&next_token);
6801 if (token == next_token)
6802 ThrowPointExpectedException(image,token);
6803 if (*p == ',')
6804 p++;
6805 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6806 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6807 points[i]=end;
6808 }
6809 for (i=0; i < 3; i++)
6810 (q+i)->point=points[i];
6811 if (TraceBezier(mvg_info,3) == MagickFalse)
6812 return(-1);
6813 q=(*mvg_info->primitive_info)+mvg_info->offset;
6814 mvg_info->offset+=q->coordinates;
6815 q+=q->coordinates;
6816 point=end;
6817 while (isspace((int) ((unsigned char) *p)) != 0)
6818 p++;
6819 if (*p == ',')
6820 p++;
6821 } while (IsPoint(p) != MagickFalse);
6822 break;
6823 }
6824 case 's':
6825 case 'S':
6826 {
6827 /*
6828 Cubic Bézier curve.
6829 */
6830 do
6831 {
6832 points[0]=points[3];
6833 points[1].x=2.0*points[3].x-points[2].x;
6834 points[1].y=2.0*points[3].y-points[2].y;
6835 for (i=2; i < 4; i++)
6836 {
6837 (void) GetNextToken(p,&p,MaxTextExtent,token);
6838 if (*token == ',')
6839 (void) GetNextToken(p,&p,MaxTextExtent,token);
6840 x=GetDrawValue(token,&next_token);
6841 if (token == next_token)
6842 ThrowPointExpectedException(image,token);
6843 (void) GetNextToken(p,&p,MaxTextExtent,token);
6844 if (*token == ',')
6845 (void) GetNextToken(p,&p,MaxTextExtent,token);
6846 y=GetDrawValue(token,&next_token);
6847 if (token == next_token)
6848 ThrowPointExpectedException(image,token);
6849 if (*p == ',')
6850 p++;
6851 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6852 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6853 points[i]=end;
6854 }
6855 if (strchr("CcSs",last_attribute) == (char *) NULL)
6856 {
6857 points[0]=point;
6858 points[1]=point;
6859 }
6860 for (i=0; i < 4; i++)
6861 (q+i)->point=points[i];
6862 if (TraceBezier(mvg_info,4) == MagickFalse)
6863 return(-1);
6864 q=(*mvg_info->primitive_info)+mvg_info->offset;
6865 mvg_info->offset+=q->coordinates;
6866 q+=q->coordinates;
6867 point=end;
6868 last_attribute=attribute;
6869 while (isspace((int) ((unsigned char) *p)) != 0)
6870 p++;
6871 if (*p == ',')
6872 p++;
6873 } while (IsPoint(p) != MagickFalse);
6874 break;
6875 }
6876 case 't':
6877 case 'T':
6878 {
6879 /*
6880 Quadratic Bézier curve.
6881 */
6882 do
6883 {
6884 points[0]=points[2];
6885 points[1].x=2.0*points[2].x-points[1].x;
6886 points[1].y=2.0*points[2].y-points[1].y;
6887 for (i=2; i < 3; i++)
6888 {
6889 (void) GetNextToken(p,&p,MaxTextExtent,token);
6890 if (*token == ',')
6891 (void) GetNextToken(p,&p,MaxTextExtent,token);
6892 x=GetDrawValue(token,&next_token);
6893 if (token == next_token)
6894 ThrowPointExpectedException(image,token);
6895 (void) GetNextToken(p,&p,MaxTextExtent,token);
6896 if (*token == ',')
6897 (void) GetNextToken(p,&p,MaxTextExtent,token);
6898 y=GetDrawValue(token,&next_token);
6899 if (token == next_token)
6900 ThrowPointExpectedException(image,token);
6901 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6902 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6903 points[i]=end;
6904 }
6905 if (status == MagickFalse)
6906 break;
6907 if (strchr("QqTt",last_attribute) == (char *) NULL)
6908 {
6909 points[0]=point;
6910 points[1]=point;
6911 }
6912 for (i=0; i < 3; i++)
6913 (q+i)->point=points[i];
6914 if (TraceBezier(mvg_info,3) == MagickFalse)
6915 return(-1);
6916 q=(*mvg_info->primitive_info)+mvg_info->offset;
6917 mvg_info->offset+=q->coordinates;
6918 q+=q->coordinates;
6919 point=end;
6920 last_attribute=attribute;
6921 while (isspace((int) ((unsigned char) *p)) != 0)
6922 p++;
6923 if (*p == ',')
6924 p++;
6925 } while (IsPoint(p) != MagickFalse);
6926 break;
6927 }
6928 case 'v':
6929 case 'V':
6930 {
6931 /*
6932 Line to.
6933 */
6934 do
6935 {
6936 (void) GetNextToken(p,&p,MaxTextExtent,token);
6937 if (*token == ',')
6938 (void) GetNextToken(p,&p,MaxTextExtent,token);
6939 y=GetDrawValue(token,&next_token);
6940 if (token == next_token)
6941 ThrowPointExpectedException(image,token);
6942 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6943 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6944 return(-1);
6945 q=(*mvg_info->primitive_info)+mvg_info->offset;
6946 if (TracePoint(q,point) == MagickFalse)
6947 return(-1);
6948 mvg_info->offset+=q->coordinates;
6949 q+=q->coordinates;
6950 while (isspace((int) ((unsigned char) *p)) != 0)
6951 p++;
6952 if (*p == ',')
6953 p++;
6954 } while (IsPoint(p) != MagickFalse);
6955 break;
6956 }
6957 case 'z':
6958 case 'Z':
6959 {
6960 /*
6961 Close path.
6962 */
6963 point=start;
6964 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6965 return(-1);
6966 q=(*mvg_info->primitive_info)+mvg_info->offset;
6967 if (TracePoint(q,point) == MagickFalse)
6968 return(-1);
6969 mvg_info->offset+=q->coordinates;
6970 q+=q->coordinates;
6971 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6972 primitive_info->coordinates=(size_t) (q-primitive_info);
6973 primitive_info->closed_subpath=MagickTrue;
6974 number_coordinates+=primitive_info->coordinates;
6975 primitive_info=q;
6976 subpath_offset=mvg_info->offset;
6977 z_count++;
6978 break;
6979 }
6980 default:
6981 {
6982 ThrowPointExpectedException(image,token);
6983 break;
6984 }
6985 }
6986 }
6987 if (status == MagickFalse)
6988 return(-1);
6989 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6990 primitive_info->coordinates=(size_t) (q-primitive_info);
6991 number_coordinates+=primitive_info->coordinates;
6992 for (i=0; i < (ssize_t) number_coordinates; i++)
6993 {
6994 q--;
6995 q->primitive=primitive_type;
6996 if (z_count > 1)
6997 q->method=FillToBorderMethod;
6998 }
6999 q=primitive_info;
7000 return((ssize_t) number_coordinates);
7001}
7002
7003static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7004 const PointInfo start,const PointInfo end)
7005{
7006 PointInfo
7007 point;
7008
7010 *p;
7011
7012 ssize_t
7013 i;
7014
7015 p=primitive_info;
7016 if (TracePoint(p,start) == MagickFalse)
7017 return(MagickFalse);
7018 p+=p->coordinates;
7019 point.x=start.x;
7020 point.y=end.y;
7021 if (TracePoint(p,point) == MagickFalse)
7022 return(MagickFalse);
7023 p+=p->coordinates;
7024 if (TracePoint(p,end) == MagickFalse)
7025 return(MagickFalse);
7026 p+=p->coordinates;
7027 point.x=end.x;
7028 point.y=start.y;
7029 if (TracePoint(p,point) == MagickFalse)
7030 return(MagickFalse);
7031 p+=p->coordinates;
7032 if (TracePoint(p,start) == MagickFalse)
7033 return(MagickFalse);
7034 p+=p->coordinates;
7035 primitive_info->coordinates=(size_t) (p-primitive_info);
7036 primitive_info->closed_subpath=MagickTrue;
7037 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7038 {
7039 p->primitive=primitive_info->primitive;
7040 p--;
7041 }
7042 return(MagickTrue);
7043}
7044
7045static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7046 const PointInfo start,const PointInfo end,PointInfo arc)
7047{
7048 PointInfo
7049 degrees,
7050 point,
7051 segment;
7052
7054 *primitive_info;
7055
7057 *p;
7058
7059 ssize_t
7060 i;
7061
7062 ssize_t
7063 offset;
7064
7065 offset=mvg_info->offset;
7066 segment.x=fabs(end.x-start.x);
7067 segment.y=fabs(end.y-start.y);
7068 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7069 {
7070 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7071 return(MagickTrue);
7072 }
7073 if (arc.x > (0.5*segment.x))
7074 arc.x=0.5*segment.x;
7075 if (arc.y > (0.5*segment.y))
7076 arc.y=0.5*segment.y;
7077 point.x=start.x+segment.x-arc.x;
7078 point.y=start.y+arc.y;
7079 degrees.x=270.0;
7080 degrees.y=360.0;
7081 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7082 return(MagickFalse);
7083 p=(*mvg_info->primitive_info)+mvg_info->offset;
7084 mvg_info->offset+=p->coordinates;
7085 point.x=start.x+segment.x-arc.x;
7086 point.y=start.y+segment.y-arc.y;
7087 degrees.x=0.0;
7088 degrees.y=90.0;
7089 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7090 return(MagickFalse);
7091 p=(*mvg_info->primitive_info)+mvg_info->offset;
7092 mvg_info->offset+=p->coordinates;
7093 point.x=start.x+arc.x;
7094 point.y=start.y+segment.y-arc.y;
7095 degrees.x=90.0;
7096 degrees.y=180.0;
7097 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7098 return(MagickFalse);
7099 p=(*mvg_info->primitive_info)+mvg_info->offset;
7100 mvg_info->offset+=p->coordinates;
7101 point.x=start.x+arc.x;
7102 point.y=start.y+arc.y;
7103 degrees.x=180.0;
7104 degrees.y=270.0;
7105 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7106 return(MagickFalse);
7107 p=(*mvg_info->primitive_info)+mvg_info->offset;
7108 mvg_info->offset+=p->coordinates;
7109 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7110 return(MagickFalse);
7111 p=(*mvg_info->primitive_info)+mvg_info->offset;
7112 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7113 return(MagickFalse);
7114 p+=p->coordinates;
7115 mvg_info->offset=offset;
7116 primitive_info=(*mvg_info->primitive_info)+offset;
7117 primitive_info->coordinates=(size_t) (p-primitive_info);
7118 primitive_info->closed_subpath=MagickTrue;
7119 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7120 {
7121 p->primitive=primitive_info->primitive;
7122 p--;
7123 }
7124 return(MagickTrue);
7125}
7126
7127static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7128 const size_t number_vertices,const double offset)
7129{
7130 double
7131 distance;
7132
7133 double
7134 dx,
7135 dy;
7136
7137 ssize_t
7138 i;
7139
7140 ssize_t
7141 j;
7142
7143 dx=0.0;
7144 dy=0.0;
7145 for (i=1; i < (ssize_t) number_vertices; i++)
7146 {
7147 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7148 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7149 if ((fabs((double) dx) >= MagickEpsilon) ||
7150 (fabs((double) dy) >= MagickEpsilon))
7151 break;
7152 }
7153 if (i == (ssize_t) number_vertices)
7154 i=(ssize_t) number_vertices-1L;
7155 distance=hypot((double) dx,(double) dy);
7156 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7157 dx*(distance+offset)/distance);
7158 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7159 dy*(distance+offset)/distance);
7160 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7161 {
7162 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7163 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7164 if ((fabs((double) dx) >= MagickEpsilon) ||
7165 (fabs((double) dy) >= MagickEpsilon))
7166 break;
7167 }
7168 distance=hypot((double) dx,(double) dy);
7169 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7170 dx*(distance+offset)/distance);
7171 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7172 dy*(distance+offset)/distance);
7173 return(MagickTrue);
7174}
7175
7176static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7177 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7178{
7179#define MaxStrokePad (6*BezierQuantum+360)
7180#define CheckPathExtent(pad_p,pad_q) \
7181{ \
7182 if ((pad_p) > MaxBezierCoordinates) \
7183 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7184 else \
7185 if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7186 { \
7187 if (~extent_p < (pad_p)) \
7188 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7189 else \
7190 { \
7191 extent_p+=(pad_p); \
7192 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7193 MaxStrokePad,sizeof(*stroke_p)); \
7194 } \
7195 } \
7196 if ((pad_q) > MaxBezierCoordinates) \
7197 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7198 else \
7199 if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7200 { \
7201 if (~extent_q < (pad_q)) \
7202 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7203 else \
7204 { \
7205 extent_q+=(pad_q); \
7206 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7207 MaxStrokePad,sizeof(*stroke_q)); \
7208 } \
7209 } \
7210 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7211 { \
7212 if (stroke_p != (PointInfo *) NULL) \
7213 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7214 if (stroke_q != (PointInfo *) NULL) \
7215 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7216 polygon_primitive=(PrimitiveInfo *) \
7217 RelinquishMagickMemory(polygon_primitive); \
7218 (void) ThrowMagickException(exception,GetMagickModule(), \
7219 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7220 return((PrimitiveInfo *) NULL); \
7221 } \
7222}
7223
7224 typedef struct _StrokeSegment
7225 {
7226 double
7227 p,
7228 q;
7229 } StrokeSegment;
7230
7231 double
7232 delta_theta,
7233 dot_product,
7234 mid,
7235 miterlimit;
7236
7237 MagickBooleanType
7238 closed_path;
7239
7240 PointInfo
7241 box_p[5],
7242 box_q[5],
7243 center,
7244 offset,
7245 *stroke_p,
7246 *stroke_q;
7247
7249 *polygon_primitive,
7250 *stroke_polygon;
7251
7252 ssize_t
7253 i;
7254
7255 size_t
7256 arc_segments,
7257 extent_p,
7258 extent_q,
7259 number_vertices;
7260
7261 ssize_t
7262 j,
7263 n,
7264 p,
7265 q;
7266
7267 StrokeSegment
7268 dx = {0.0, 0.0},
7269 dy = {0.0, 0.0},
7270 inverse_slope = {0.0, 0.0},
7271 slope = {0.0, 0.0},
7272 theta = {0.0, 0.0};
7273
7274 /*
7275 Allocate paths.
7276 */
7277 number_vertices=primitive_info->coordinates;
7278 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7279 number_vertices+2UL,sizeof(*polygon_primitive));
7280 if (polygon_primitive == (PrimitiveInfo *) NULL)
7281 {
7282 (void) ThrowMagickException(exception,GetMagickModule(),
7283 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7284 return((PrimitiveInfo *) NULL);
7285 }
7286 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7287 sizeof(*polygon_primitive));
7288 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7289 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7290 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7291 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7292 if (((draw_info->linejoin == RoundJoin) ||
7293 (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7294 {
7295 polygon_primitive[number_vertices]=primitive_info[1];
7296 number_vertices++;
7297 }
7298 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7299 /*
7300 Compute the slope for the first line segment, p.
7301 */
7302 dx.p=0.0;
7303 dy.p=0.0;
7304 for (n=1; n < (ssize_t) number_vertices; n++)
7305 {
7306 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7307 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7308 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7309 break;
7310 }
7311 if (n == (ssize_t) number_vertices)
7312 {
7313 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7314 {
7315 /*
7316 Zero length subpath.
7317 */
7318 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7319 sizeof(*stroke_polygon));
7320 stroke_polygon[0]=polygon_primitive[0];
7321 stroke_polygon[0].coordinates=0;
7322 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7323 polygon_primitive);
7324 return(stroke_polygon);
7325 }
7326 n=(ssize_t) number_vertices-1L;
7327 }
7328 extent_p=2*number_vertices;
7329 extent_q=2*number_vertices;
7330 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7331 sizeof(*stroke_p));
7332 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7333 sizeof(*stroke_q));
7334 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7335 {
7336 if (stroke_p != (PointInfo *) NULL)
7337 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7338 if (stroke_q != (PointInfo *) NULL)
7339 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7340 polygon_primitive=(PrimitiveInfo *)
7341 RelinquishMagickMemory(polygon_primitive);
7342 (void) ThrowMagickException(exception,GetMagickModule(),
7343 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7344 return((PrimitiveInfo *) NULL);
7345 }
7346 slope.p=0.0;
7347 inverse_slope.p=0.0;
7348 if (fabs(dx.p) < MagickEpsilon)
7349 {
7350 if (dx.p >= 0.0)
7351 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7352 else
7353 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7354 }
7355 else
7356 if (fabs(dy.p) < MagickEpsilon)
7357 {
7358 if (dy.p >= 0.0)
7359 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7360 else
7361 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7362 }
7363 else
7364 {
7365 slope.p=dy.p/dx.p;
7366 inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7367 }
7368 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7369 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7370 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7371 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7372 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7373 offset.y=(double) (offset.x*inverse_slope.p);
7374 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7375 {
7376 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7377 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7378 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7379 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7380 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7381 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7382 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7383 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7384 }
7385 else
7386 {
7387 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7388 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7389 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7390 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7391 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7392 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7393 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7394 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7395 }
7396 /*
7397 Create strokes for the line join attribute: bevel, miter, round.
7398 */
7399 p=0;
7400 q=0;
7401 stroke_q[p++]=box_q[0];
7402 stroke_p[q++]=box_p[0];
7403 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7404 {
7405 /*
7406 Compute the slope for this line segment, q.
7407 */
7408 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7409 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7410 dot_product=dx.q*dx.q+dy.q*dy.q;
7411 if (dot_product < 0.25)
7412 continue;
7413 slope.q=0.0;
7414 inverse_slope.q=0.0;
7415 if (fabs(dx.q) < MagickEpsilon)
7416 {
7417 if (dx.q >= 0.0)
7418 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7419 else
7420 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7421 }
7422 else
7423 if (fabs(dy.q) < MagickEpsilon)
7424 {
7425 if (dy.q >= 0.0)
7426 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7427 else
7428 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7429 }
7430 else
7431 {
7432 slope.q=dy.q/dx.q;
7433 inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7434 }
7435 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7436 offset.y=(double) (offset.x*inverse_slope.q);
7437 dot_product=dy.q*offset.x-dx.q*offset.y;
7438 if (dot_product > 0.0)
7439 {
7440 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7441 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7442 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7443 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7444 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7445 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7446 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7447 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7448 }
7449 else
7450 {
7451 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7452 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7453 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7454 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7455 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7456 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7457 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7458 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7459 }
7460 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7461 {
7462 box_p[4]=box_p[1];
7463 box_q[4]=box_q[1];
7464 }
7465 else
7466 {
7467 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7468 box_p[3].y)/(slope.p-slope.q));
7469 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7470 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7471 box_q[3].y)/(slope.p-slope.q));
7472 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7473 }
7474 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7475 dot_product=dx.q*dy.p-dx.p*dy.q;
7476 if (dot_product <= 0.0)
7477 switch (draw_info->linejoin)
7478 {
7479 case BevelJoin:
7480 {
7481 stroke_q[q++]=box_q[1];
7482 stroke_q[q++]=box_q[2];
7483 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7484 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7485 if (dot_product <= miterlimit)
7486 stroke_p[p++]=box_p[4];
7487 else
7488 {
7489 stroke_p[p++]=box_p[1];
7490 stroke_p[p++]=box_p[2];
7491 }
7492 break;
7493 }
7494 case MiterJoin:
7495 {
7496 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7497 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7498 if (dot_product <= miterlimit)
7499 {
7500 stroke_q[q++]=box_q[4];
7501 stroke_p[p++]=box_p[4];
7502 }
7503 else
7504 {
7505 stroke_q[q++]=box_q[1];
7506 stroke_q[q++]=box_q[2];
7507 stroke_p[p++]=box_p[1];
7508 stroke_p[p++]=box_p[2];
7509 }
7510 break;
7511 }
7512 case RoundJoin:
7513 {
7514 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7515 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7516 if (dot_product <= miterlimit)
7517 stroke_p[p++]=box_p[4];
7518 else
7519 {
7520 stroke_p[p++]=box_p[1];
7521 stroke_p[p++]=box_p[2];
7522 }
7523 center=polygon_primitive[n].point;
7524 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7525 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7526 if (theta.q < theta.p)
7527 theta.q+=2.0*MagickPI;
7528 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7529 theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7530 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7531 stroke_q[q].x=box_q[1].x;
7532 stroke_q[q].y=box_q[1].y;
7533 q++;
7534 for (j=1; j < (ssize_t) arc_segments; j++)
7535 {
7536 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7537 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7538 (theta.p+delta_theta),DegreesToRadians(360.0))));
7539 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7540 (theta.p+delta_theta),DegreesToRadians(360.0))));
7541 q++;
7542 }
7543 stroke_q[q++]=box_q[2];
7544 break;
7545 }
7546 default:
7547 break;
7548 }
7549 else
7550 switch (draw_info->linejoin)
7551 {
7552 case BevelJoin:
7553 {
7554 stroke_p[p++]=box_p[1];
7555 stroke_p[p++]=box_p[2];
7556 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7557 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7558 if (dot_product <= miterlimit)
7559 stroke_q[q++]=box_q[4];
7560 else
7561 {
7562 stroke_q[q++]=box_q[1];
7563 stroke_q[q++]=box_q[2];
7564 }
7565 break;
7566 }
7567 case MiterJoin:
7568 {
7569 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7570 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7571 if (dot_product <= miterlimit)
7572 {
7573 stroke_q[q++]=box_q[4];
7574 stroke_p[p++]=box_p[4];
7575 }
7576 else
7577 {
7578 stroke_q[q++]=box_q[1];
7579 stroke_q[q++]=box_q[2];
7580 stroke_p[p++]=box_p[1];
7581 stroke_p[p++]=box_p[2];
7582 }
7583 break;
7584 }
7585 case RoundJoin:
7586 {
7587 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7588 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7589 if (dot_product <= miterlimit)
7590 stroke_q[q++]=box_q[4];
7591 else
7592 {
7593 stroke_q[q++]=box_q[1];
7594 stroke_q[q++]=box_q[2];
7595 }
7596 center=polygon_primitive[n].point;
7597 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7598 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7599 if (theta.p < theta.q)
7600 theta.p+=2.0*MagickPI;
7601 arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7602 theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7603 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7604 stroke_p[p++]=box_p[1];
7605 for (j=1; j < (ssize_t) arc_segments; j++)
7606 {
7607 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7608 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7609 (theta.p+delta_theta),DegreesToRadians(360.0))));
7610 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7611 (theta.p+delta_theta),DegreesToRadians(360.0))));
7612 p++;
7613 }
7614 stroke_p[p++]=box_p[2];
7615 break;
7616 }
7617 default:
7618 break;
7619 }
7620 slope.p=slope.q;
7621 inverse_slope.p=inverse_slope.q;
7622 box_p[0]=box_p[2];
7623 box_p[1]=box_p[3];
7624 box_q[0]=box_q[2];
7625 box_q[1]=box_q[3];
7626 dx.p=dx.q;
7627 dy.p=dy.q;
7628 n=i;
7629 }
7630 stroke_p[p++]=box_p[1];
7631 stroke_q[q++]=box_q[1];
7632 /*
7633 Trace stroked polygon.
7634 */
7635 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7636 (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7637 if (stroke_polygon == (PrimitiveInfo *) NULL)
7638 {
7639 (void) ThrowMagickException(exception,GetMagickModule(),
7640 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7641 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7642 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7643 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7644 polygon_primitive);
7645 return(stroke_polygon);
7646 }
7647 for (i=0; i < (ssize_t) p; i++)
7648 {
7649 stroke_polygon[i]=polygon_primitive[0];
7650 stroke_polygon[i].point=stroke_p[i];
7651 }
7652 if (closed_path != MagickFalse)
7653 {
7654 stroke_polygon[i]=polygon_primitive[0];
7655 stroke_polygon[i].point=stroke_polygon[0].point;
7656 i++;
7657 }
7658 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7659 {
7660 stroke_polygon[i]=polygon_primitive[0];
7661 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7662 }
7663 if (closed_path != MagickFalse)
7664 {
7665 stroke_polygon[i]=polygon_primitive[0];
7666 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7667 i++;
7668 }
7669 stroke_polygon[i]=polygon_primitive[0];
7670 stroke_polygon[i].point=stroke_polygon[0].point;
7671 i++;
7672 stroke_polygon[i].primitive=UndefinedPrimitive;
7673 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7674 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7675 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7676 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7677 return(stroke_polygon);
7678}
Definition: image.h:134
Definition: draw.c:146