vtkShadowMapBakerPass.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkShadowMapPass.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 vtkShadowMapBakerPass_h
#define vtkShadowMapBakerPass_h
 
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkRenderPass.h"
 
class vtkOpenGLRenderWindow;
class vtkInformationIntegerKey;
class vtkCamera;
class vtkLight;
class vtkFrameBufferObject;
class vtkShadowMapBakerPassTextures; // internal
class vtkShadowMapBakerPassLightCameras; // internal
 
class VTKRENDERINGOPENGL_EXPORT vtkShadowMapBakerPass : public vtkRenderPass
{
public:
  static vtkShadowMapBakerPass *New();
  vtkTypeMacro(vtkShadowMapBakerPass,vtkRenderPass);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  static vtkInformationIntegerKey *OCCLUDER();
 
  // If this key exists on the Propertykeys of a prop, the prop is viewed as a
  // light/shadow receiver. This key is not mutually exclusive with the
  // OCCLUDER() key.
  static vtkInformationIntegerKey *RECEIVER();
 
  //BTX
 
  virtual void Render(const vtkRenderState *s);
  //ETX
 
  void ReleaseGraphicsResources(vtkWindow *w);
 
 
  vtkGetObjectMacro(OpaquePass,vtkRenderPass);
  virtual void SetOpaquePass(vtkRenderPass *opaquePass);
 
 
  vtkGetObjectMacro(CompositeZPass,vtkRenderPass);
  virtual void SetCompositeZPass(vtkRenderPass *compositeZPass);
 
 
  vtkSetMacro(Resolution,unsigned int);
  vtkGetMacro(Resolution,unsigned int);
 
 
  vtkSetMacro(PolygonOffsetFactor,float);
  vtkGetMacro(PolygonOffsetFactor,float);
 
 
  vtkSetMacro(PolygonOffsetUnits,float);
  vtkGetMacro(PolygonOffsetUnits,float);
 
  bool GetHasShadows();
 
  bool LightCreatesShadow(vtkLight *l);
 
//BTX
  vtkShadowMapBakerPassTextures *GetShadowMaps();
 
 
  vtkShadowMapBakerPassLightCameras *GetLightCameras();
//ETX
 
  bool GetNeedUpdate();
 
  // // Description:
  // INTERNAL USE ONLY.
  // Internally used by vtkShadowMapBakerPass and vtkShadowMapPass.
  //
  // Set NeedUpate to false. Called by vtkShadowMapPass.
  void SetUpToDate();
 
 protected:
  vtkShadowMapBakerPass();
 
  virtual ~vtkShadowMapBakerPass();
 
 
  void PointNearFar(double *v,
                    double *pt,
                    double *dir,
                    double &mNear,
                    double &mFar,
                    bool initialized);
 
 
  void BoxNearFar(double *bb,
                  double *pt,
                  double *dir,
                  double &mNear,
                  double &mFar);
 
  //BTX
 
  void BuildCameraLight(vtkLight *light,
                        double *boundingBox,
                        vtkCamera *lcamera);
  //ETX
 
  void CheckSupport(vtkOpenGLRenderWindow *w);
 
  vtkRenderPass *OpaquePass;
 
  vtkRenderPass *CompositeZPass;
 
  unsigned int Resolution;
 
  float PolygonOffsetFactor;
  float PolygonOffsetUnits;
 
  bool HasShadows;
 
  vtkFrameBufferObject *FrameBufferObject;
 
  vtkShadowMapBakerPassTextures *ShadowMaps;
  vtkShadowMapBakerPassLightCameras *LightCameras;
 
 
  vtkTimeStamp LastRenderTime;
  bool NeedUpdate;
 
private:
  vtkShadowMapBakerPass(const vtkShadowMapBakerPass&);  // Not implemented.
  void operator=(const vtkShadowMapBakerPass&);  // Not implemented.
};
 
#endif