---

Hybrid/vtkDepthSortPolyData.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkDepthSortPolyData.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkDepthSortPolyData_h
#define __vtkDepthSortPolyData_h

#include "vtkPolyDataToPolyDataFilter.h"

#define VTK_DIRECTION_BACK_TO_FRONT 0
#define VTK_DIRECTION_FRONT_TO_BACK 1
#define VTK_DIRECTION_SPECIFIED_VECTOR 2

#define VTK_SORT_FIRST_POINT 0
#define VTK_SORT_BOUNDS_CENTER 1
#define VTK_SORT_PARAMETRIC_CENTER 2

class vtkCamera;
class vtkProp3D;
class vtkTransform;

class VTK_HYBRID_EXPORT vtkDepthSortPolyData : public vtkPolyDataToPolyDataFilter 
{
public:
  static vtkDepthSortPolyData *New();

  vtkTypeRevisionMacro(vtkDepthSortPolyData,vtkPolyDataToPolyDataFilter);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetMacro(Direction,int);
  vtkGetMacro(Direction,int);
  void SetDirectionToFrontToBack() 
    {this->SetDirection(VTK_DIRECTION_FRONT_TO_BACK);}
  void SetDirectionToBackToFront() 
    {this->SetDirection(VTK_DIRECTION_BACK_TO_FRONT);}
  void SetDirectionToSpecifiedVector() 
    {this->SetDirection(VTK_DIRECTION_SPECIFIED_VECTOR);}


  vtkSetMacro(DepthSortMode,int);
  vtkGetMacro(DepthSortMode,int);
  void SetDepthSortModeToFirstPoint() 
    {this->SetDepthSortMode(VTK_SORT_FIRST_POINT);}
  void SetDepthSortModeToBoundsCenter() 
    {this->SetDepthSortMode(VTK_SORT_BOUNDS_CENTER);}
  void SetDepthSortModeToParametricCenter() 
    {this->SetDepthSortMode(VTK_SORT_PARAMETRIC_CENTER);}


  virtual void SetCamera(vtkCamera*);
  vtkGetObjectMacro(Camera,vtkCamera);


  void SetProp3D(vtkProp3D *);
  vtkProp3D *GetProp3D();


  vtkSetVector3Macro(Vector,double);
  vtkGetVectorMacro(Vector,double,3);


  vtkSetVector3Macro(Origin,double);
  vtkGetVectorMacro(Origin,double,3);


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

  unsigned long GetMTime();

protected:
  vtkDepthSortPolyData();
  ~vtkDepthSortPolyData();

  void Execute();
  void ComputeProjectionVector(double vector[3], double origin[3]);

  int Direction;
  int DepthSortMode;
  vtkCamera *Camera;
  vtkProp3D *Prop3D;
  vtkTransform *Transform;
  double Vector[3];
  double Origin[3];
  int SortScalars;
  
private:
  vtkDepthSortPolyData(const vtkDepthSortPolyData&);  // Not implemented.
  void operator=(const vtkDepthSortPolyData&);  // Not implemented.
};

#endif

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