dox/Graphics/vtkPolyDataPointSampler.h

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

  Program:   Visualization Toolkit
  Module:    vtkPolyDataPointSampler.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 __vtkPolyDataPointSampler_h
#define __vtkPolyDataPointSampler_h

#include "vtkPolyDataAlgorithm.h"

class VTK_GRAPHICS_EXPORT vtkPolyDataPointSampler : public vtkPolyDataAlgorithm 
{
public:
  static vtkPolyDataPointSampler *New();


  vtkTypeMacro(vtkPolyDataPointSampler,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetClampMacro(Distance,double,0.0,VTK_LARGE_FLOAT);
  vtkGetMacro(Distance,double);
  

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


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


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


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

protected:
  vtkPolyDataPointSampler();
  ~vtkPolyDataPointSampler() {}

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);

  double Distance;
  double Distance2;
  
  int GenerateVertexPoints;
  int GenerateEdgePoints;
  int GenerateInteriorPoints;
  int GenerateVertices;

  void SampleEdge(vtkPoints *pts, double x0[3], double x1[3]);
  void SampleTriangle(vtkPoints *newPts, vtkPoints *inPts, 
                      vtkIdType *pts);
  void SamplePolygon(vtkPoints *newPts, vtkPoints *inPts, 
                      vtkIdType npts, vtkIdType *pts);

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

#endif

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