Source/System/State/OpenGL/OSGFogChunk.cpp

   1 /*---------------------------------------------------------------------------*\
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  29 /*---------------------------------------------------------------------------*\
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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 "OSGFogChunk.h"
  49 #include "OSGDrawEnv.h"
  50
  51 OSG_BEGIN_NAMESPACE
  52
  53 // Documentation for this class is emitted in the
  54 // OSGFogChunkBase.cpp file.
  55 // To modify it, please change the .fcd file (OSGFogChunk.fcd) and
  56 // regenerate the base file.
  57
  58 /***************************************************************************\
  59  *                           Class variables                               *
  60 \***************************************************************************/
  61
  62 StateChunkClass FogChunk::_class("Fog", 1, 100);
  63
  64 /***************************************************************************\
  65  *                           Class methods                                 *
  66 \***************************************************************************/
  67
  68 void FogChunk::initMethod(InitPhase ePhase)
  69 {
  70     Inherited::initMethod(ePhase);
  71 }
  72
  73
  74 /***************************************************************************\
  75  *                           Instance methods                              *
  76 \***************************************************************************/
  77
  78 /*-------------------------------------------------------------------------*\
  79  -  private                                                                 -
  80 \*-------------------------------------------------------------------------*/
  81
  82 /*----------------------- constructors & destructors ----------------------*/
  83
  84 FogChunk::FogChunk(void) :
  85     Inherited()
  86 {
  87 }
  88
  89 FogChunk::FogChunk(const FogChunk &source) :
  90     Inherited(source)
  91 {
  92 }
  93
  94 FogChunk::~FogChunk(void)
  95 {
  96 }
  97
  98 /*----------------------------- class specific ----------------------------*/
  99
 100 const StateChunkClass *FogChunk::getClass(void) const
 101 {
 102     return &_class;
 103 }
 104
 105 void FogChunk::activate(DrawEnv *pEnv, UInt32 /* index */)
 106 {
 107 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 108     pEnv->incNumChunkChanges();
 109
 110     glFogi (GL_FOG_MODE,    getMode   ()                );
 111     glFogf (GL_FOG_DENSITY, getDensity()                );
 112     glFogf (GL_FOG_START,   getStart  ()                );
 113     glFogf (GL_FOG_END,     getEnd    ()                );
 114     glFogfv(GL_FOG_COLOR,   getColor  ().getValuesRGBA());
 115
 116     glEnable(GL_FOG);
 117 #else
 118     OSG_ASSERT(false);
 119 #endif
 120 }
 121
 122 void FogChunk::changeFrom(DrawEnv    *pEnv,
 123                           StateChunk *oldChunk,
 124                           UInt32     index     )
 125 {
 126     oldChunk->deactivate(pEnv, index);
 127     this    ->activate  (pEnv, index);
 128 }
 129
 130 void FogChunk::deactivate(DrawEnv * /* pEnv */, UInt32 /* index */)
 131 {
 132 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 133     glDisable(GL_FOG);
 134 #else
 135     OSG_ASSERT(false);
 136 #endif
 137 }
 138
 139 bool FogChunk::isTransparent(void) const
 140 {
 141     return false;
 142 }
 143
 144 void FogChunk::changed(ConstFieldMaskArg whichField,
 145                             UInt32            origin,
 146                             BitVector         details)
 147 {
 148     Inherited::changed(whichField, origin, details);
 149 }
 150
 151 void FogChunk::dump(      UInt32    ,
 152                          const BitVector ) const
 153 {
 154     SLOG << "Dump FogChunk NI" << std::endl;
 155 }
 156
 157 Real32 FogChunk::switchCost(StateChunk * /* chunk */)
 158 {
 159     return 0;
 160 }
 161
 162 bool FogChunk::operator < (const StateChunk &other) const
 163 {
 164     return this < &other;
 165 }
 166
 167 bool FogChunk::operator == (const StateChunk &other) const
 168 {
 169     FogChunk const *tother = dynamic_cast<FogChunk const *>(&other);
 170
 171     if(tother == NULL)
 172         return false;
 173
 174     if(getMode() != tother->getMode())
 175         return false;
 176
 177     if(getDensity() != tother->getDensity())
 178         return false;
 179
 180     if(getStart() != tother->getStart())
 181         return false;
 182
 183     if(getEnd() != tother->getEnd())
 184         return false;
 185
 186     if(getColor() != tother->getColor())
 187         return false;
 188
 189     return true;
 190 }
 191
 192 bool FogChunk::operator != (const StateChunk &other) const
 193 {
 194     return ! (*this == other);
 195 }
 196
 197 OSG_END_NAMESPACE