dox/VolumeRendering/vtkVolumePicker.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkVolumePicker.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.

=========================================================================*/
#ifndef __vtkVolumePicker_h
#define __vtkVolumePicker_h

#include "vtkCellPicker.h"

class VTK_VOLUMERENDERING_EXPORT vtkVolumePicker : public vtkCellPicker
{
public:
  static vtkVolumePicker *New();
  vtkTypeMacro(vtkVolumePicker, vtkCellPicker);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(PickCroppingPlanes, int);
  vtkBooleanMacro(PickCroppingPlanes, int);
  vtkGetMacro(PickCroppingPlanes, int);


  vtkGetMacro(CroppingPlaneId, int);

protected:
  vtkVolumePicker();
  ~vtkVolumePicker();

  virtual void ResetPickInfo();

  virtual double IntersectVolumeWithLine(const double p1[3],
                                         const double p2[3],
                                         double t1, double t2,
                                         vtkProp3D *prop, 
                                         vtkAbstractVolumeMapper *mapper);

  static int ClipLineWithCroppingRegion(const double bounds[6],
                                        const int extent[6], int flags,
                                        const double x1[3], const double x2[3],
                                        double t1, double t2,
                                        int &extentPlaneId, int &numSegments,
                                        double *t1List, double *t2List,
                                        double *s1List, int *planeIdList);

  int PickCroppingPlanes;
  int CroppingPlaneId;

private:
  vtkVolumePicker(const vtkVolumePicker&);  // Not implemented.
  void operator=(const vtkVolumePicker&);  // Not implemented.
};

#endif

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