VTK
vtkPicker.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkPicker.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm 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 =========================================================================*/
43 #ifndef __vtkPicker_h
44 #define __vtkPicker_h
45 
46 #include "vtkAbstractPropPicker.h"
47 
49 class vtkDataSet;
50 class vtkTransform;
51 class vtkActorCollection;
53 class vtkPoints;
54 
56 {
57 public:
58  static vtkPicker *New();
60  void PrintSelf(ostream& os, vtkIndent indent);
61 
63 
66  vtkSetMacro(Tolerance,double);
67  vtkGetMacro(Tolerance,double);
69 
71 
73  vtkGetVectorMacro(MapperPosition,double,3);
75 
77 
78  vtkGetObjectMacro(Mapper,vtkAbstractMapper3D);
80 
82 
84  vtkGetObjectMacro(DataSet,vtkDataSet);
86 
89  vtkProp3DCollection *GetProp3Ds() {return this->Prop3Ds;};
90 
94  vtkActorCollection *GetActors();
95 
99  vtkPoints *GetPickedPositions() {return this->PickedPositions;};
100 
102 
106  virtual int Pick(double selectionX, double selectionY, double selectionZ,
107  vtkRenderer *renderer);
109 
111 
115  int Pick(double selectionPt[3], vtkRenderer *ren)
116  {return this->Pick(selectionPt[0], selectionPt[1], selectionPt[2], ren);};
118 
119 protected:
120  vtkPicker();
121  ~vtkPicker();
122 
123  void MarkPicked(vtkAssemblyPath *path, vtkProp3D *p, vtkAbstractMapper3D *m,
124  double tMin, double mapperPos[3]);
125  virtual double IntersectWithLine(double p1[3], double p2[3], double tol,
126  vtkAssemblyPath *path, vtkProp3D *p,
128  virtual void Initialize();
129 
130  double Tolerance; //tolerance for computation (% of window)
131  double MapperPosition[3]; //selection point in untransformed coordinates
132 
133  vtkAbstractMapper3D *Mapper; //selected mapper (if the prop has a mapper)
134  vtkDataSet *DataSet; //selected dataset (if there is one)
135 
136  double GlobalTMin; //parametric coordinate along pick ray where hit occured
137  vtkTransform *Transform; //use to perform ray transformation
138  vtkActorCollection *Actors; //candidate actors (based on bounding box)
139  vtkProp3DCollection *Prop3Ds; //candidate actors (based on bounding box)
140  vtkPoints *PickedPositions; // candidate positions
141 
142 private:
143  vtkPicker(const vtkPicker&); // Not implemented.
144  void operator=(const vtkPicker&); // Not implemented.
145 };
146 
147 
148 #endif
149 
150 
double Tolerance
Definition: vtkPicker.h:130
abstract class to specify dataset behavior
Definition: vtkDataSet.h:58
void PrintSelf(ostream &os, vtkIndent indent)
vtkPoints * PickedPositions
Definition: vtkPicker.h:140
abstract specification for renderers
Definition: vtkRenderer.h:69
describes linear transformations via a 4x4 matrix
Definition: vtkTransform.h:58
represents an 3D object for placement in a rendered scene
Definition: vtkProp3D.h:41
vtkActorCollection * Actors
Definition: vtkPicker.h:138
superclass for 3D geometric pickers (uses ray cast)
Definition: vtkPicker.h:55
int Pick(double selectionPt[3], vtkRenderer *ren)
Definition: vtkPicker.h:115
vtkTransform * Transform
Definition: vtkPicker.h:137
vtkProp3DCollection * GetProp3Ds()
Definition: vtkPicker.h:89
a list of nodes that form an assembly path
vtkPoints * GetPickedPositions()
Definition: vtkPicker.h:99
a simple class to control print indentation
Definition: vtkIndent.h:37
vtkProp3DCollection * Prop3Ds
Definition: vtkPicker.h:139
abstract class specifies interface to map 3D data
a list of 3D props
a list of actors
#define VTK_RENDERING_EXPORT
abstract API for pickers that can pick an instance of vtkProp
virtual int Pick(double selectionX, double selectionY, double selectionZ, vtkRenderer *renderer)=0
vtkAbstractMapper3D * Mapper
Definition: vtkPicker.h:133
static vtkObject * New()
double GlobalTMin
Definition: vtkPicker.h:136
represent and manipulate 3D points
Definition: vtkPoints.h:38
vtkDataSet * DataSet
Definition: vtkPicker.h:134