Method _initCurves

Engine/source/environment/scatterSky.cpp:927–1006

}

void ScatterSky::_initCurves()
{
   if ( mCurves->getSampleCount() > 0 )
      return;

   // Takes time of day (0-2) and returns
   // the night interpolant (0-1) day/night factor.
   // moonlight = 0, sunlight > 0
   mCurves[0].clear();
   mCurves[0].addPoint( 0.0f, 0.5f );// Sunrise
   mCurves[0].addPoint( 0.025f, 1.0f );//
   mCurves[0].addPoint( 0.975f, 1.0f );//
   mCurves[0].addPoint( 1.0f, 0.5f );//Sunset
   mCurves[0].addPoint( 1.02f, 0.0f );//Sunlight ends
   mCurves[0].addPoint( 1.98f, 0.0f );//Sunlight begins
   mCurves[0].addPoint( 2.0f, 0.5f );// Sunrise

    //  Takes time of day (0-2) and returns mieScattering factor
   //   Regulates the size of the sun's disk
   mCurves[1].clear();
   mCurves[1].addPoint( 0.0f, 0.0006f );
   mCurves[1].addPoint( 0.01f, 0.00035f );
   mCurves[1].addPoint( 0.03f, 0.00023f );
   mCurves[1].addPoint( 0.1f, 0.00022f );
   mCurves[1].addPoint( 0.2f, 0.00043f );
   mCurves[1].addPoint( 0.3f, 0.00062f );
   mCurves[1].addPoint( 0.4f, 0.0008f );
   mCurves[1].addPoint( 0.5f, 0.00086f );// High noon
   mCurves[1].addPoint( 0.6f, 0.0008f );
   mCurves[1].addPoint( 0.7f, 0.00062f );
   mCurves[1].addPoint( 0.8f, 0.00043f );
   mCurves[1].addPoint( 0.9f, 0.00022f );
   mCurves[1].addPoint( 0.97f, 0.00023f );
   mCurves[1].addPoint( 0.99f, 0.00035f );
   mCurves[1].addPoint( 1.0f, 0.0006f );
   mCurves[1].addPoint( 2.0f, 0.0006f );

   // Takes time of day and returns brightness
   // Controls sunlight and moonlight brightness
   mCurves[2].clear();
   mCurves[2].addPoint( 0.0f, 0.2f );// Sunrise
   mCurves[2].addPoint( 0.1f, 1.0f );
   mCurves[2].addPoint( 0.9f, 1.0f );// Sunset
   mCurves[2].addPoint( 1.008f, 0.0f );//Adjust end of sun's reflection
   mCurves[2].addPoint( 1.02001f, 0.0f );
   mCurves[2].addPoint( 1.05f, 0.5f );// Turn brightness up for moonlight
   mCurves[2].addPoint( 1.93f, 0.5f );
   mCurves[2].addPoint( 1.97999f, 0.0f );// No brightness when sunlight starts
   mCurves[2].addPoint( 1.992f, 0.0f );//Adjust start of sun's reflection
   mCurves[2].addPoint( 2.0f, 0.2f ); // Sunrise

   // Interpolation of day/night color sets
   // 0/1  ambient/nightcolor
   // 0 = day colors only anytime
   // 1 = night colors only anytime
   // between 0 and 1 renders both color sets anytime

   mCurves[3].clear();