VTK  9.1.0
vtkSelection.h
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1/*=========================================================================
2
3 Program: ParaView
4 Module: vtkSelection.h
5
6 Copyright (c) Kitware, Inc.
7 All rights reserved.
8 See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14=========================================================================*/
40#ifndef vtkSelection_h
41#define vtkSelection_h
42
43#include "vtkCommonDataModelModule.h" // For export macro
44#include "vtkDataObject.h"
45#include "vtkSmartPointer.h" // for vtkSmartPointer.
46
47#include <memory> // for unique_ptr.
48#include <string> // for string.
49
52
53class VTKCOMMONDATAMODEL_EXPORT vtkSelection : public vtkDataObject
54{
55public:
57 void PrintSelf(ostream& os, vtkIndent indent) override;
58 static vtkSelection* New();
59
63 void Initialize() override;
64
68 int GetDataObjectType() override { return VTK_SELECTION; }
69
74 unsigned int GetNumberOfNodes() const;
75
80 virtual vtkSelectionNode* GetNode(unsigned int idx) const;
81
85 virtual vtkSelectionNode* GetNode(const std::string& name) const;
86
92 virtual std::string AddNode(vtkSelectionNode*);
93
99 virtual void SetNode(const std::string& name, vtkSelectionNode*);
100
104 virtual std::string GetNodeNameAtIndex(unsigned int idx) const;
105
107
110 virtual void RemoveNode(unsigned int idx);
111 virtual void RemoveNode(const std::string& name);
114
118 virtual void RemoveAllNodes();
119
121
132 vtkSetMacro(Expression, std::string);
133 vtkGetMacro(Expression, std::string);
135
139 void DeepCopy(vtkDataObject* src) override;
140
146 void ShallowCopy(vtkDataObject* src) override;
147
153 virtual void Union(vtkSelection* selection);
154
160 virtual void Union(vtkSelectionNode* node);
161
166 virtual void Subtract(vtkSelection* selection);
167
172 virtual void Subtract(vtkSelectionNode* node);
173
178
180
183 virtual void Dump();
184 virtual void Dump(ostream& os);
186
188
194
202 vtkSignedCharArray* const* values, unsigned int num_values) const;
203
208 template <typename MapType>
209 vtkSmartPointer<vtkSignedCharArray> Evaluate(const MapType& values_map) const;
210
211protected:
213 ~vtkSelection() override;
214
215 std::string Expression;
216
217private:
218 vtkSelection(const vtkSelection&) = delete;
219 void operator=(const vtkSelection&) = delete;
220
221 class vtkInternals;
222 vtkInternals* Internals;
223};
224
225//----------------------------------------------------------------------------
226template <typename MapType>
227inline vtkSmartPointer<vtkSignedCharArray> vtkSelection::Evaluate(const MapType& values_map) const
228{
229 const unsigned int num_nodes = this->GetNumberOfNodes();
230 std::unique_ptr<vtkSignedCharArray*[]> values(new vtkSignedCharArray*[num_nodes]);
231 for (unsigned int cc = 0; cc < num_nodes; ++cc)
232 {
233 auto iter = values_map.find(this->GetNodeNameAtIndex(cc));
234 values[cc] = iter != values_map.end() ? iter->second : nullptr;
235 }
236 return this->Evaluate(&values[0], num_nodes);
237}
238
239#endif
general representation of visualization data
Definition: vtkDataObject.h:60
a simple class to control print indentation
Definition: vtkIndent.h:34
Store zero or more vtkInformation instances.
Store vtkAlgorithm input/output information.
a node in a vtkSelection the defines the selection criteria.
data object that represents a "selection" in VTK.
Definition: vtkSelection.h:54
virtual void RemoveNode(unsigned int idx)
Removes a selection node.
vtkMTimeType GetMTime() override
Return the MTime taking into account changes to the properties.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
static vtkSelection * GetData(vtkInformationVector *v, int i=0)
Retrieve a vtkSelection stored inside an invormation object.
virtual vtkSelectionNode * GetNode(unsigned int idx) const
Returns a node given it's index.
unsigned int GetNumberOfNodes() const
Returns the number of nodes in this selection.
virtual void SetNode(const std::string &name, vtkSelectionNode *)
Adds a vtkSelectionNode and assigns it the specified name.
virtual void Union(vtkSelection *selection)
Union this selection with the specified selection.
virtual void RemoveNode(const std::string &name)
Removes a selection node.
virtual vtkSelectionNode * GetNode(const std::string &name) const
Returns a node with the given name, if present, else nullptr is returned.
void DeepCopy(vtkDataObject *src) override
Copy selection nodes of the input.
virtual void Subtract(vtkSelection *selection)
Remove the nodes from the specified selection from this selection.
virtual void Union(vtkSelectionNode *node)
Union this selection with the specified selection node.
static vtkSelection * New()
void ShallowCopy(vtkDataObject *src) override
Copy selection nodes of the input.
~vtkSelection() override
virtual void Subtract(vtkSelectionNode *node)
Remove the nodes from the specified selection from this selection.
void Initialize() override
Restore data object to initial state,.
std::string Expression
Definition: vtkSelection.h:215
virtual std::string GetNodeNameAtIndex(unsigned int idx) const
Returns the name for a node at the given index.
virtual void Dump()
Dumps the contents of the selection, giving basic information only.
int GetDataObjectType() override
Returns VTK_SELECTION enumeration value.
Definition: vtkSelection.h:68
virtual void Dump(ostream &os)
Dumps the contents of the selection, giving basic information only.
virtual std::string AddNode(vtkSelectionNode *)
Adds a selection node.
vtkSmartPointer< vtkSignedCharArray > Evaluate(vtkSignedCharArray *const *values, unsigned int num_values) const
Evaluates the expression for each element in the values.
static vtkSelection * GetData(vtkInformation *info)
Retrieve a vtkSelection stored inside an invormation object.
virtual void RemoveAllNodes()
Removes all selection nodes.
virtual void RemoveNode(vtkSelectionNode *)
Removes a selection node.
dynamic, self-adjusting array of signed char
Hold a reference to a vtkObjectBase instance.
vtkTypeUInt32 vtkMTimeType
Definition: vtkType.h:287
#define VTK_SELECTION
Definition: vtkType.h:99