ssDepthSortPolyData.h

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/* $Id: ssDepthSortPolyData.h,v 1.2 2005/05/11 11:40:12 pfb Exp $ */

#ifndef __ssDepthSortPolyData_h
#define __ssDepthSortPolyData_h

/*=========================================================================
 * This file addapted (modified) from a file of Vtk V3.2 - pfb
 ==========================================================================*/

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: ssDepthSortPolyData.h,v $
  Language:  C++
  Date:      $Date: 2005/05/11 11:40:12 $
  Version:   $Revision: 1.2 $
  Thanks:    Scott Hill for implementing this class


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
// .SECTION Caveats
// The sort operation will not work well for long, thin primitives, or cells
// that intersect, overlap, or interpenetrate each other.


#include <vtkPolyDataToPolyDataFilter.h>
#include <vtkCamera.h>
#include <vtkProp3D.h>
#include <vtkTransform.h>

class VTK_EXPORT ssDepthSortPolyData : public vtkPolyDataToPolyDataFilter 
{
public:
  enum SortMethod
    {
    SS_DIRECTION_BACK_TO_FRONT = 0,
    SS_DIRECTION_FRONT_TO_BACK,
    SS_DIRECTION_SPECIFIED_VECTOR
    };

  static ssDepthSortPolyData *New();

  vtkTypeMacro(ssDepthSortPolyData, vtkPolyDataToPolyDataFilter);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void SetDirection(int arg)
    {
    this->Direction = arg;
    }

  virtual int GetDirection() const
    {
    return this->Direction;
    }

  void SetDirectionToFrontToBack()
    {
    this->SetDirection(SS_DIRECTION_FRONT_TO_BACK);
    };

  void SetDirectionToBackToFront()
    {
    this->SetDirection(SS_DIRECTION_BACK_TO_FRONT);
    };

  void SetDirectionToSpecifiedVector()
    {
    this->SetDirection(SS_DIRECTION_SPECIFIED_VECTOR);
    };

  virtual void SetCamera(vtkCamera *arg)
    {
    this->Camera = arg;
    }

  virtual vtkCamera *GetCamera() const
    {
    return this->Camera;
    }

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

  virtual void SetVector(double x, double y, double z)
    {
    this->Vector[0] = x;
    this->Vector[1] = y;
    this->Vector[2] = z;
    }

  virtual void SetVector(double x[3])
    {
    this->Vector[0] = x[0];
    this->Vector[1] = x[1];
    this->Vector[2] = x[2];
    }

  virtual const double *GetVector() const
    {
    return this->Vector;
    }

  virtual void GetVector(double x[3])
    {
    x[0] = this->Vector[0];
    x[1] = this->Vector[1];
    x[2] = this->Vector[2];
    }

  virtual void SetOrigin(double x, double y, double z)
    {
    this->Origin[0] = x;
    this->Origin[1] = y;
    this->Origin[2] = z;
    }

  virtual void SetOrigin(double x[3])
    {
    this->Origin[0] = x[0];
    this->Origin[1] = x[1];
    this->Origin[2] = x[2];
    }

  virtual const double *GetOrigin() const
    {
    return this->Origin;
    }

  virtual void GetOrigin(double x[3])
    {
    x[0] = this->Origin[0];
    x[1] = this->Origin[1];
    x[2] = this->Origin[2];
    }

  virtual void SetSortScalars(int arg)
    {
    this->SortScalars = arg;
    }

  virtual int GetSortScalars()
    {
    return this->SortScalars;
    }

  virtual void SortScalarsOn()
    {
    this->SetSortScalars(1);
    }

  virtual void SortScalarsOff()
    {
    this->SetSortScalars(0);
    }

  unsigned long GetMTime();

protected:
  ssDepthSortPolyData();
  ~ssDepthSortPolyData();
  ssDepthSortPolyData(const ssDepthSortPolyData&) {};
  void operator=(const ssDepthSortPolyData&) {};

  void Execute();

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

  int Direction;
  vtkCamera *Camera;
  vtkProp3D *Prop3D;
  vtkTransform *Transform;
  double Vector[3];
  double Origin[3];
  int SortScalars;
  
};

#endif

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