Source/System/NodeCores/Groups/Light/OSGSpotLight.cpp

   1 /*---------------------------------------------------------------------------*\
   2  *                                OpenSG                                     *
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   5  *             Copyright (C) 2000-2002 by the OpenSG Forum                   *
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  12 /*---------------------------------------------------------------------------*\
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  15  * This library is free software; you can redistribute it and/or modify it   *
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  19  * This library is distributed in the hope that it will be useful, but       *
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  28 \*---------------------------------------------------------------------------*/
  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
  31  *                                                                           *
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  34  *                                                                           *
  35  *                                                                           *
  36  *                                                                           *
  37 \*---------------------------------------------------------------------------*/
  38
  39 #include <cstdlib>
  40 #include <cstdio>
  41
  42 #include "OSGConfig.h"
  43
  44 #include "OSGGL.h"
  45
  46 #include "OSGRenderAction.h"
  47 #include "OSGStatCollector.h"
  48
  49 #include "OSGSpotLight.h"
  50
  51 OSG_USING_NAMESPACE
  52
  53 // Documentation for this class is emited in the
  54 // OSGSpotLightBase.cpp file.
  55 // To modify it, please change the .fcd file (OSGSpotLight.fcd) and
  56 // regenerate the base file.
  57
  58 /*----------------------------- class variables ---------------------------*/
  59
  60 StatElemDesc<StatIntElem>  SpotLight::statNSpotLights(
  61     "NSpotLights",
  62     "number of spot light sources");
  63
  64 /*-------------------------------------------------------------------------*/
  65 /*                             Changed                                     */
  66
  67 void SpotLight::changed(ConstFieldMaskArg whichField,
  68                         UInt32            origin,
  69                         BitVector         details)
  70 {
  71     Inherited::changed(whichField, origin, details);
  72 }
  73
  74 /*-------------------------------------------------------------------------*/
  75 /*                             Chunk                                       */
  76
  77 void SpotLight::makeChunk(void)
  78 {
  79     Inherited::makeChunk();
  80
  81     Vec4f pos(_sfPosition.getValue ());
  82
  83     pos[3] = 1.f;
  84
  85     _pChunk->setPosition (pos                             );
  86
  87     _pChunk->setDirection(              getDirection   () );
  88     _pChunk->setExponent (              getSpotExponent() );
  89     _pChunk->setCutoff   (osgRad2Degree(getSpotCutOff  ()));
  90 }
  91
  92 /*-------------------------------------------------------------------------*/
  93 /*                           LightEngine                                   */
  94
  95 void SpotLight::callLightEngineEnter(RenderAction *ract)
  96 {
  97     if(getLightEngine() != NULL && getLightEngine()->getEnabled() == true)
  98     {
  99         getLightEngine()->runOnEnter(this, LightEngine::Spot, ract);
 100     }
 101 }
 102
 103 void SpotLight::callLightEngineLeave(RenderAction *ract)
 104 {
 105     if(getLightEngine() != NULL && getLightEngine()->getEnabled() == true)
 106     {
 107         getLightEngine()->runOnLeave(this, LightEngine::Spot, ract);
 108     }
 109 }
 110
 111 /*-------------------------------------------------------------------------*/
 112 /*                                Dump                                     */
 113
 114 void SpotLight::dump(      UInt32    uiIndent,
 115                      const BitVector bvFlags) const
 116 {
 117    Inherited::dump(uiIndent, bvFlags);
 118 }
 119
 120 /*-------------------------------------------------------------------------*/
 121 /*                            Constructors                                 */
 122
 123 SpotLight::SpotLight(void) :
 124     Inherited()
 125 {
 126 }
 127
 128 SpotLight::SpotLight(const SpotLight &source) :
 129     Inherited(source)
 130 {
 131 }
 132
 133 /*-------------------------------------------------------------------------*/
 134 /*                             Destructor                                  */
 135
 136 SpotLight::~SpotLight(void)
 137 {
 138 }
 139
 140 /*-------------------------------------------------------------------------*/
 141 /*                             Rendering                                   */
 142
 143 Action::ResultE SpotLight::renderEnter(Action *action)
 144 {
 145     RenderAction *a = dynamic_cast<RenderAction *>(action);
 146
 147     return Light::renderEnter(LightEngine::Spot,
 148                               SpotLight::statNSpotLights,
 149                               a);
 150 }
 151
 152 Action::ResultE SpotLight::renderLeave(Action *action)
 153 {
 154     return Light::renderLeave(LightEngine::Spot,
 155                               action);
 156 }
 157
 158 /*-------------------------------------------------------------------------*/
 159 /*                               Init                                      */
 160
 161 void SpotLight::initMethod(InitPhase ePhase)
 162 {
 163     Inherited::initMethod(ePhase);
 164
 165     if(ePhase == TypeObject::SystemPost)
 166     {
 167         RenderAction::registerEnterDefault(
 168             SpotLight::getClassType(),
 169             reinterpret_cast<Action::Callback>(&SpotLight::renderEnter));
 170
 171         RenderAction::registerLeaveDefault(
 172             SpotLight::getClassType(),
 173             reinterpret_cast<Action::Callback>(&SpotLight::renderLeave));
 174     }
 175 }
 176