/usr/include/vtk-5.8/vtkAreaPicker.h is in libvtk5-dev 5.8.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkAreaPicker.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkAreaPicker - Picks props behind a selection rectangle on a viewport.
//
// .SECTION Description
// The vtkAreaPicker picks all vtkProp3Ds that lie behind the screen space
// rectangle from x0,y0 and x1,y1. The selection is based upon the bounding
// box of the prop and is thus not exact.
//
// Like vtkPicker, a pick results in a list of Prop3Ds because many props may
// lie within the pick frustum. You can also get an AssemblyPath, which in this
// case is defined to be the path to the one particular prop in the Prop3D list
// that lies nearest to the near plane.
//
// This picker also returns the selection frustum, defined as either a
// vtkPlanes, or a set of eight corner vertices in world space. The vtkPlanes
// version is an ImplicitFunction, which is suitable for use with the
// vtkExtractGeometry. The six frustum planes are in order: left, right,
// bottom, top, near, far
//
// Because this picker picks everything within a volume, the world pick point
// result is ill-defined. Therefore if you ask this class for the world pick
// position, you will get the centroid of the pick frustum. This may be outside
// of all props in the prop list.
//
// .SECTION See Also
// vtkInteractorStyleRubberBandPick, vtkExtractSelectedFrustum.
#ifndef __vtkAreaPicker_h
#define __vtkAreaPicker_h
#include "vtkAbstractPropPicker.h"
class vtkRenderer;
class vtkPoints;
class vtkPlanes;
class vtkProp3DCollection;
class vtkAbstractMapper3D;
class vtkDataSet;
class vtkExtractSelectedFrustum;
class vtkProp;
class vtkImageActor;
class VTK_RENDERING_EXPORT vtkAreaPicker : public vtkAbstractPropPicker
{
public:
static vtkAreaPicker *New();
vtkTypeMacro(vtkAreaPicker,vtkAbstractPropPicker);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the default screen rectangle to pick in.
void SetPickCoords(double x0, double y0, double x1, double y1);
// Description:
// Set the default renderer to pick on.
void SetRenderer(vtkRenderer *);
// Description:
// Perform an AreaPick within the default screen rectangle and renderer.
virtual int Pick();
// Description:
// Perform pick operation in volume behind the given screen coordinates.
// Props intersecting the selection frustum will be accessible via GetProp3D.
// GetPlanes returns a vtkImplicitFunciton suitable for vtkExtractGeometry.
virtual int AreaPick(double x0, double y0, double x1, double y1, vtkRenderer *renderer = NULL);
// Description:
// Perform pick operation in volume behind the given screen coordinate.
// This makes a thin frustum around the selected pixel.
// Note: this ignores Z in order to pick everying in a volume from z=0 to z=1.
virtual int Pick(double x0, double y0, double vtkNotUsed(z0), vtkRenderer *renderer = NULL)
{return this->AreaPick(x0, y0, x0+1.0, y0+1.0, renderer);};
// Description:
// Return mapper that was picked (if any).
vtkGetObjectMacro(Mapper,vtkAbstractMapper3D);
// Description:
// Get a pointer to the dataset that was picked (if any). If nothing
// was picked then NULL is returned.
vtkGetObjectMacro(DataSet,vtkDataSet);
// Description:
// Return a collection of all the prop 3D's that were intersected
// by the pick ray. This collection is not sorted.
vtkProp3DCollection *GetProp3Ds() {return this->Prop3Ds;};
// Description:
// Return the six planes that define the selection frustum. The implicit
// function defined by the planes evaluates to negative inside and positive
// outside.
vtkGetObjectMacro(Frustum, vtkPlanes);
// Description:
// Return eight points that define the selection frustum.
vtkGetObjectMacro(ClipPoints, vtkPoints);
protected:
vtkAreaPicker();
~vtkAreaPicker();
virtual void Initialize();
void DefineFrustum(double x0, double y0, double x1, double y1, vtkRenderer *renderer);
virtual int PickProps(vtkRenderer *renderer);
int TypeDecipher(vtkProp *, vtkImageActor **, vtkAbstractMapper3D **);
int ABoxFrustumIsect(double bounds[], double &mindist);
vtkPoints *ClipPoints;
vtkPlanes *Frustum;
vtkProp3DCollection *Prop3Ds; //candidate actors (based on bounding box)
vtkAbstractMapper3D *Mapper; //selected mapper (if the prop has a mapper)
vtkDataSet *DataSet; //selected dataset (if there is one)
//used internally to do prop intersection tests
vtkExtractSelectedFrustum *FrustumExtractor;
double X0;
double Y0;
double X1;
double Y1;
private:
vtkAreaPicker(const vtkAreaPicker&); // Not implemented.
void operator=(const vtkAreaPicker&); // Not implemented.
};
#endif
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