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92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkVolumePicker.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkVolumePicker
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* @brief ray-cast picker enhanced for volumes
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*
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* vtkVolumePicker is a subclass of vtkCellPicker. It has one
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* advantage over vtkCellPicker for volumes: it will be able to
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* correctly perform picking when CroppingPlanes are present. This
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* isn't possible for vtkCellPicker since it doesn't link to
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* the VolumeRendering classes and hence cannot access information
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* about the CroppingPlanes.
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*
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* @sa
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* vtkPicker vtkPointPicker vtkCellPicker
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*
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* @par Thanks:
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* This class was contributed to VTK by David Gobbi on behalf of Atamai Inc.
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*/
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#ifndef vtkVolumePicker_h
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#define vtkVolumePicker_h
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#include "vtkCellPicker.h"
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#include "vtkRenderingVolumeModule.h" // For export macro
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class VTKRENDERINGVOLUME_EXPORT vtkVolumePicker : public vtkCellPicker
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{
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public:
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static vtkVolumePicker* New();
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vtkTypeMacro(vtkVolumePicker, vtkCellPicker);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Set whether to pick the cropping planes of props that have them.
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* If this is set, then the pick will be done on the cropping planes
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* rather than on the data. The GetCroppingPlaneId() method will return
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* the index of the cropping plane of the volume that was picked. This
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* setting is only relevant to the picking of volumes.
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*/
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vtkSetMacro(PickCroppingPlanes, vtkTypeBool);
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vtkBooleanMacro(PickCroppingPlanes, vtkTypeBool);
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vtkGetMacro(PickCroppingPlanes, vtkTypeBool);
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//@}
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//@{
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/**
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* Get the index of the cropping plane that the pick ray passed
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* through on its way to the prop. This will be set regardless
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* of whether PickCroppingPlanes is on. The crop planes are ordered
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* as follows: xmin, xmax, ymin, ymax, zmin, zmax. If the volume is
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* not cropped, the value will bet set to -1.
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*/
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vtkGetMacro(CroppingPlaneId, int);
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//@}
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protected:
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vtkVolumePicker();
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~vtkVolumePicker() override;
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void ResetPickInfo() override;
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double IntersectVolumeWithLine(const double p1[3], const double p2[3], double t1, double t2,
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vtkProp3D* prop, vtkAbstractVolumeMapper* mapper) override;
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static int ClipLineWithCroppingRegion(const double bounds[6], const int extent[6], int flags,
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const double x1[3], const double x2[3], double t1, double t2, int& extentPlaneId,
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int& numSegments, double* t1List, double* t2List, double* s1List, int* planeIdList);
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vtkTypeBool PickCroppingPlanes;
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int CroppingPlaneId;
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private:
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vtkVolumePicker(const vtkVolumePicker&) = delete;
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void operator=(const vtkVolumePicker&) = delete;
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};
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#endif
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