vtkImageMarchingCubes.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImageMarchingCubes.h,v $

  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 __vtkImageMarchingCubes_h
#define __vtkImageMarchingCubes_h

#include "vtkPolyDataAlgorithm.h"

#include "vtkContourValues.h" // Needed for direct access to ContourValues

class vtkCellArray;
class vtkFloatArray;
class vtkImageData;
class vtkPoints;

class VTK_GRAPHICS_EXPORT vtkImageMarchingCubes : public vtkPolyDataAlgorithm
{
public:
  static vtkImageMarchingCubes *New();
  vtkTypeRevisionMacro(vtkImageMarchingCubes,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);
  

  void SetValue(int i, double value);
  double GetValue(int i);
  double *GetValues();
  void GetValues(double *contourValues);
  void SetNumberOfContours(int number);
  int GetNumberOfContours();
  void GenerateValues(int numContours, double range[2]);
  void GenerateValues(int numContours, double rangeStart, double rangeEnd);

  unsigned long int GetMTime();


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

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

  vtkSetMacro(ComputeGradients, int);
  vtkGetMacro(ComputeGradients, int);
  vtkBooleanMacro(ComputeGradients, int);
  
  // Should be protected, but the templated functions need these
  int ComputeScalars;
  int ComputeNormals;
  int ComputeGradients;
  int NeedGradients;

  vtkCellArray *Triangles;
  vtkFloatArray *Scalars;
  vtkPoints *Points;
  vtkFloatArray *Normals;
  vtkFloatArray *Gradients;
  
  int GetLocatorPoint(int cellX, int cellY, int edge);
  void AddLocatorPoint(int cellX, int cellY, int edge, int ptId);
  void IncrementLocatorZ();


  vtkSetMacro(InputMemoryLimit, int);
  vtkGetMacro(InputMemoryLimit, int);

protected:
  vtkImageMarchingCubes();
  ~vtkImageMarchingCubes();

  int NumberOfSlicesPerChunk;
  int InputMemoryLimit;

  vtkContourValues *ContourValues;
   
  int *LocatorPointIds;
  int LocatorDimX;
  int LocatorDimY;
  int LocatorMinX;
  int LocatorMinY;
  
  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);

  void March(vtkImageData *inData, int chunkMin, int chunkMax,
             int numContours, double *values);
  void InitializeLocator(int min0, int max0, int min1, int max1);
  void DeleteLocator();
  int *GetLocatorPointer(int cellX, int cellY, int edge);

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

inline void vtkImageMarchingCubes::SetValue(int i, double value)
{this->ContourValues->SetValue(i,value);}


inline double vtkImageMarchingCubes::GetValue(int i)
{return this->ContourValues->GetValue(i);}


inline double *vtkImageMarchingCubes::GetValues()
{return this->ContourValues->GetValues();}

inline void vtkImageMarchingCubes::GetValues(double *contourValues)
{this->ContourValues->GetValues(contourValues);}

inline void vtkImageMarchingCubes::SetNumberOfContours(int number)
{this->ContourValues->SetNumberOfContours(number);}


inline int vtkImageMarchingCubes::GetNumberOfContours()
{return this->ContourValues->GetNumberOfContours();}


inline void vtkImageMarchingCubes::GenerateValues(int numContours, double range[2])
{this->ContourValues->GenerateValues(numContours, range);}


inline void vtkImageMarchingCubes::GenerateValues(int numContours, double
                                                 rangeStart, double rangeEnd)
{this->ContourValues->GenerateValues(numContours, rangeStart, rangeEnd);}

#endif

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