Source/System/Window/Camera/OSGShearedStereoCameraDecorator.cpp

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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45
  46 #include "OSGConfig.h"
  47
  48 #include "OSGMatrixUtility.h"
  49
  50 #include "OSGPerspectiveCamera.h"
  51 #include "OSGShearedStereoCameraDecorator.h"
  52
  53 OSG_USING_NAMESPACE
  54
  55 // Documentation for this class is emited in the
  56 // OSGShearedStereoCameraDecoratorBase.cpp file.
  57 // To modify it, please change the .fcd file (OSGShearedStereoCameraDecorator.fcd) and
  58 // regenerate the base file.
  59
  60 /*----------------------- constructors & destructors ----------------------*/
  61
  62 ShearedStereoCameraDecorator::ShearedStereoCameraDecorator(void) :
  63     Inherited()
  64 {
  65 }
  66
  67 ShearedStereoCameraDecorator::ShearedStereoCameraDecorator(
  68     const ShearedStereoCameraDecorator &source) :
  69
  70     Inherited(source)
  71 {
  72 }
  73
  74 ShearedStereoCameraDecorator::~ShearedStereoCameraDecorator(void)
  75 {
  76 }
  77
  78 /*----------------------------- class specific ----------------------------*/
  79
  80 void ShearedStereoCameraDecorator::initMethod(InitPhase ePhase)
  81 {
  82     Inherited::initMethod(ePhase);
  83 }
  84
  85 void ShearedStereoCameraDecorator::changed(ConstFieldMaskArg whichField,
  86                                            UInt32            origin,
  87                                            BitVector         details)
  88 {
  89     Inherited::changed(whichField, origin, details);
  90 }
  91
  92 void ShearedStereoCameraDecorator::dump(      UInt32    ,
  93                                         const BitVector ) const
  94 {
  95     SLOG << "Dump ShearedStereoCameraDecorator NI" << std::endl;
  96 }
  97
  98
  99 /*! Get the projection matrix, uses MatrixStereoPerspective to generate it.
 100 */
 101
 102 void ShearedStereoCameraDecorator::getProjection(Matrix &result,
 103                                                  UInt32  width,
 104                                                  UInt32  height)
 105 {
 106     if(width == 0 || height == 0)
 107     {
 108         result.setIdentity();
 109         return;
 110     }
 111
 112     PerspectiveCamera *cam =
 113         dynamic_cast<PerspectiveCamera *>(getDecoratee());
 114
 115     if(cam == NULL)
 116     {
 117         FFATAL(("ShearedStereoCameraDecorator::getProjection: can only"
 118                 " decorate PerspectiveCameras!\n"));
 119
 120         result.setIdentity();
 121         return;
 122     }
 123
 124     Matrix trans;
 125     MatrixStereoPerspective(result, trans, cam->getFov(),
 126                             width / Real32(height) * cam->getAspect(),
 127                             cam->getNear(),
 128                             cam->getFar(),
 129                             getZeroParallaxDistance(),
 130                             getEyeSeparation(),
 131                             getLeftEye() ? 0.f : 1.f,
 132                             getOverlap());
 133
 134     result.mult(trans);
 135 }
 136
 137 void ShearedStereoCameraDecorator::getDecoration(Matrix &result,
 138                                                                                                  UInt32  width,
 139                                                  UInt32  height)
 140 {
 141     if(width == 0 || height == 0)
 142     {
 143         result.setIdentity();
 144         return;
 145     }
 146
 147     Camera *camera = getDecoratee();
 148
 149     if(camera == NULL)
 150     {
 151         FWARNING(("TileCameraDecorator::getProjection: no decoratee!\n"));
 152
 153         result.setIdentity();
 154
 155         return;
 156     }
 157
 158     camera->getDecoration(result, width, height);
 159 }