/**
* Gravitates the color towards (1,1,1, world.ambientLight)
* Rate is determined by the property decay
*/
protected virtual void performDecay()
{
//Color decay toward 1
if (color.getBrightness() != 1f)
{
color += -1f;
color *= decay;
if (Math.Abs(color.getBrightness()) < 0.00005f)
{
color = new Color(0, color.a);
}
color += 1f;
}
//Intensity decay toward ambience
color.a -= world.ambientLight;
color.a *= decay;
if (color.a < 0.00005f)
{
color.a = 0;
}
color.a += world.ambientLight;
}
