vtkOpenGLImageSliceMapper.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkOpenGLImageSliceMapper.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 vtkOpenGLImageSliceMapper_h
#define vtkOpenGLImageSliceMapper_h
 
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkImageSliceMapper.h"
 
class vtkWindow;
class vtkRenderer;
class vtkRenderWindow;
class vtkOpenGLRenderWindow;
class vtkImageSlice;
class vtkImageProperty;
class vtkImageData;
 
class VTKRENDERINGOPENGL_EXPORT vtkOpenGLImageSliceMapper :
  public vtkImageSliceMapper
{
public:
  static vtkOpenGLImageSliceMapper *New();
  vtkTypeMacro(vtkOpenGLImageSliceMapper, vtkImageSliceMapper);
  virtual void PrintSelf(ostream& os, vtkIndent indent);
 
  void Render(vtkRenderer *ren, vtkImageSlice *prop);
 
  void ReleaseGraphicsResources(vtkWindow *);
 
protected:
  vtkOpenGLImageSliceMapper();
  ~vtkOpenGLImageSliceMapper();
 
 
  void RenderColorAndLighting(
    double red, double green, double blue,
    double alpha, double ambient, double diffuse);
 
 
  void RecursiveRenderTexturedPolygon(
    vtkRenderer *ren, vtkImageProperty *property,
    vtkImageData *image, int extent[6], bool recursive);
 
 
  void RenderTexturedPolygon(
    vtkRenderer *ren, vtkImageProperty *property,
    vtkImageData *image, int extent[6], bool recursive);
 
  void RenderPolygon(vtkPoints *points, const int extent[6], bool textured);
 
 
  void RenderBackground(
    vtkPoints *points, const int extent[6], bool textured);
 
  void BindFragmentProgram(vtkRenderer *ren, vtkImageProperty *property);
 
  vtkStdString BuildFragmentProgram(vtkImageProperty *property);
 
 
  void ComputeTextureSize(
    const int extent[6], int &xdim, int &ydim,
    int imageSize[2], int textureSize[2]);
 
  bool TextureSizeOK(const int size[2]);
 
  void CheckOpenGLCapabilities(vtkOpenGLRenderWindow *renWin);
 
  long TextureIndex; // OpenGL ID for texture or display list
  long BackgroundTextureIndex; // OpenGL ID for texture or display list
  long FragmentShaderIndex; // OpenGL ID for fragment shader
  vtkRenderWindow *RenderWindow; // RenderWindow used for previous render
  int TextureSize[2];
  int TextureBytesPerPixel;
  int LastOrientation;
  int LastSliceNumber;
 
  vtkTimeStamp LoadTime;
  int LoadCount;
 
  bool UsePowerOfTwoTextures;
  bool UseClampToEdge;
  bool UseFragmentProgram;
 
private:
  vtkOpenGLImageSliceMapper(const vtkOpenGLImageSliceMapper&);  // Not implemented.
  void operator=(const vtkOpenGLImageSliceMapper&);  // Not implemented.
};
 
#endif