vtkFSSurfaceReader.h

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/*=auto=========================================================================

  Portions (c) Copyright 2005 Brigham and Women's Hospital (BWH) All Rights Reserved.

  See COPYRIGHT.txt
  or http://www.slicer.org/copyright/copyright.txt for details.

=========================================================================auto=*/

#ifndef __vtkFSSurfaceReader_h
#define __vtkFSSurfaceReader_h

#include "FreeSurferConfigure.h"
#include "vtkFreeSurferExport.h"

// VTK includes
#include <vtkDataReader.h>

#define FS_DEBUG 0

#define FS_CALC_NORMALS 0

class vtkInformation;
class vtkInformationVector;
class vtkPolyData;

class VTK_FreeSurfer_EXPORT vtkFSSurfaceReader : public vtkDataReader
{
public:
  static vtkFSSurfaceReader *New();
  vtkTypeMacro(vtkFSSurfaceReader,vtkDataReader);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;

  vtkPolyData *GetOutput();
  vtkPolyData *GetOutput(int idx);
  void SetOutput(vtkPolyData *output);

  enum
  {
      FS_QUAD_FILE_MAGIC_NUMBER = (-1 & 0x00ffffff),
      FS_NEW_QUAD_FILE_MAGIC_NUMBER = (-3 & 0x00ffffff),
      FS_TRIANGLE_FILE_MAGIC_NUMBER = (-2 & 0x00ffffff),
      FS_NUM_VERTS_IN_QUAD_FACE = 4, 
      FS_NUM_VERTS_IN_TRI_FACE = 3, 
      FS_MAX_NUM_FACES_PER_VERTEX = 10, 
  };

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

protected:
  vtkFSSurfaceReader();
  ~vtkFSSurfaceReader();

  virtual int FillOutputPortInformation(int, vtkInformation*) VTK_OVERRIDE;

  int ExecutePiece;
  int ExecuteNumberOfPieces;
  int ExecuteGhostLevel;

private:
  vtkFSSurfaceReader(const vtkFSSurfaceReader&);  
  void operator=(const vtkFSSurfaceReader&);  
};


#if FS_CALC_NORMALS
typedef struct {
  int numFaces;
  int faces[FS_MAX_NUM_FACES_PER_VERTEX];
  int indicesInFace[FS_MAX_NUM_FACES_PER_VERTEX];
  float x, y, z;
  float nx, ny, nz;
} Vertex;

typedef struct {
  int vertices[FS_NUM_SIDES_IN_FACE];
} Face;
#endif

#endif