Source/Contrib/TrapezoidalShadowMaps/OSGTrapezoidalShadowMapEngine.h

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  38
  39 #ifndef _OSGTRAPEZOIDALSHADOWMAPENGINE_H_
  40 #define _OSGTRAPEZOIDALSHADOWMAPENGINE_H_
  41 #ifdef __sgi
  42 #pragma once
  43 #endif
  44
  45 #include "OSGTrapezoidalShadowMapEngineBase.h"
  46
  47 OSG_BEGIN_NAMESPACE
  48
  49 /*! \brief TrapezoidalShadowMapEngine class. See \ref
  50            PageGroupTrapezoidalShadowMapEngine for a description.
  51 */
  52
  53 class OSG_CONTRIBTRAPEZOIDALSHADOWMAPS_DLLMAPPING TrapezoidalShadowMapEngine
  54     : public TrapezoidalShadowMapEngineBase
  55 {
  56   protected:
  57
  58     /*==========================  PUBLIC  =================================*/
  59
  60   public:
  61
  62     typedef TrapezoidalShadowMapEngineBase Inherited;
  63     typedef TrapezoidalShadowMapEngine     Self;
  64
  65     /*---------------------------------------------------------------------*/
  66     /*! \name                       Render                                 */
  67     /*! \{                                                                 */
  68
  69     virtual Action::ResultE runOnEnter(Light        *light,
  70                                        LightTypeE    eType,
  71                                        RenderAction *ract);
  72     virtual Action::ResultE runOnLeave(Light        *light,
  73                                        LightTypeE    eType,
  74                                        RenderAction *ract);
  75
  76     /*! \}                                                                 */
  77     /*---------------------------------------------------------------------*/
  78     /*! \name                      Sync                                    */
  79     /*! \{                                                                 */
  80
  81     virtual void changed(ConstFieldMaskArg whichField,
  82                          UInt32            origin,
  83                          BitVector         details    );
  84
  85     /*! \}                                                                 */
  86     /*---------------------------------------------------------------------*/
  87     /*! \name                     Output                                   */
  88     /*! \{                                                                 */
  89
  90     virtual void dump(      UInt32     uiIndent = 0,
  91                       const BitVector  bvFlags  = 0) const;
  92
  93     /*! \}                                                                 */
  94     /*=========================  PROTECTED  ===============================*/
  95
  96   protected:
  97
  98     // Variables should all be in TrapezoidalShadowMapEngineBase.
  99
 100     typedef ShaderShadowMapEngineData         TSMEngineData;
 101
 102     static const std::string _lightPassVPCode;
 103     static const std::string _lightPassFPCode;
 104
 105     static const std::string _pointFPCode;
 106     static const std::string _spotFPCode;
 107
 108     /*---------------------------------------------------------------------*/
 109     /*! \name                  Constructors                                */
 110     /*! \{                                                                 */
 111
 112     TrapezoidalShadowMapEngine(void);
 113     TrapezoidalShadowMapEngine(const TrapezoidalShadowMapEngine &source);
 114
 115     /*! \}                                                                 */
 116     /*---------------------------------------------------------------------*/
 117     /*! \name                   Destructors                                */
 118     /*! \{                                                                 */
 119
 120     virtual ~TrapezoidalShadowMapEngine(void);
 121
 122     /*! \}                                                                 */
 123     /*---------------------------------------------------------------------*/
 124     /*! \name                      Init                                    */
 125     /*! \{                                                                 */
 126
 127     static void initMethod(InitPhase ePhase);
 128
 129     /*! \}                                                                 */
 130     /*---------------------------------------------------------------------*/
 131     /*! \name                  Render Helper                               */
 132     /*! \{                                                                 */
 133
 134     void handleEnter                (Light            *light,
 135                                      LightTypeE        eType,
 136                                      RenderAction     *ract,
 137                                      TSMEngineData    *data   );
 138     void handlePointLightEnter      (PointLight       *pointL,
 139                                      RenderAction     *ract,
 140                                      TSMEngineData    *data   );
 141     void handleDirectionalLightEnter(DirectionalLight *dirL,
 142                                      RenderAction     *ract,
 143                                      TSMEngineData    *data   );
 144     void handleSpotLightEnter       (SpotLight        *spotL,
 145                                      RenderAction     *ract,
 146                                      TSMEngineData    *data   );
 147
 148     void intersectFrusta        (const FrustumVolume      &fA,
 149                                  const FrustumVolume      &fB,
 150                                        std::vector<Pnt3f> &intVerts,
 151                                        Pnt3f              &intCenter);
 152     void updateLightPassMaterial(      TSMEngineData      *data,
 153                                        UInt16              faceIdx,
 154                                  const Matrix             &matNT    );
 155
 156
 157     bool calcTrapezoidalTransform(      Matrix        &matNT,
 158                                   const Matrix        &matEyeToWorld,
 159                                   const Matrix        &matLightFull,
 160                                   const FrustumVolume &eyeFrust,
 161                                   const FrustumVolume &lightFrust    );
 162
 163     void emptyCubeFaceDrawFunc   (      DrawEnv       *drawEnv       );
 164
 165     /*! \}                                                                 */
 166     /*==========================  PRIVATE  ================================*/
 167
 168   private:
 169
 170     friend class FieldContainer;
 171     friend class TrapezoidalShadowMapEngineBase;
 172
 173     // prohibit default functions (move to 'public' if you need one)
 174     void operator =(const TrapezoidalShadowMapEngine &source);
 175 };
 176
 177 typedef TrapezoidalShadowMapEngine *TrapezoidalShadowMapEngineP;
 178
 179 OSG_END_NAMESPACE
 180
 181 #include "OSGTrapezoidalShadowMapEngineBase.inl"
 182 #include "OSGTrapezoidalShadowMapEngine.inl"
 183
 184 #endif /* _OSGTRAPEZOIDALSHADOWMAPENGINE_H_ */