// .NAME vtkPTXReader - read a ptx file into a polydata object
// .SECTION Description
// vtkPTXReader reads a ptx file into a polydata object

#ifndef __vtkPTXReader_h
#define __vtkPTXReader_h

#include "vtkPolyDataAlgorithm.h"
#include "vtkSmartPointer.h"
#include "vtkDenseArray.h"

struct Point
{
  double x,y,z;
};

struct Color
{
  Color(){r=0;g=0;b=0;}
  Color(unsigned char* c) {r = c[0]; g=c[1]; b=c[2];}
  unsigned char r,g,b;
};

//class vtkPTXReader : public vtkPolyDataAlgorithm
class VTK_IO_EXPORT vtkPTXReader : public vtkPolyDataAlgorithm  
{
public:
  vtkTypeRevisionMacro(vtkPTXReader,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkPTXReader *New();
  
  // Description:
  // Specify file name of the ptx file.
  vtkSetStringMacro(FileName);
  vtkGetStringMacro(FileName);
	
  vtkSetMacro(SpanGaps, bool);
  vtkGetMacro(SpanGaps, bool);
  
  vtkSetMacro(Triangulate, bool);
  vtkGetMacro(Triangulate, bool);
  
protected:
  vtkPTXReader();
  ~vtkPTXReader();
  
  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);

private:
  vtkPTXReader(const vtkPTXReader&);  // Not implemented.
  void operator=(const vtkPTXReader&);  // Not implemented.
  
  //internal data
  //BTX
  vtkSmartPointer<vtkDenseArray<Point> > PointGrid;
  vtkSmartPointer<vtkDenseArray<bool> > ValidGrid;
  vtkSmartPointer<vtkDenseArray<Color> > ColorGrid;
  vtkSmartPointer<vtkDenseArray<double> > IntensityGrid;
  vtkSmartPointer<vtkDenseArray<unsigned int> > IdGrid;
  //ETX
  
  char* FileName;
  
  unsigned int NumberOfThetaPoints;
  unsigned int NumberOfPhiPoints;
  
  //options
  bool Triangulate;
  bool SpanGaps;
  
  //funtions
  void GeneratePointPolyData(vtkPolyData* output);
  void GenerateTriangulatedPolyData(vtkPolyData* result);
  void GenerateTriangulatedPolyDataSpanGaps(vtkPolyData* result);
  bool ReadFile();
  
};

#endif