public void traceRefractionPhoton(ShadingState previous, Ray r, Color power)
{
if (previous.getRefractionDepth() >= maxRefractionDepth)
{
return;
}
IntersectionState istate = previous.getIntersectionState();
scene.trace(r, istate);
if (previous.getIntersectionState().hit())
{
// create a new shading context
ShadingState state = ShadingState.createRefractionBounceState(previous, r, 0);
shadePhoton(state, power);
}
}
public ShadingState traceFinalGather(ShadingState previous, Ray r, int i)
{
if (previous.getDiffuseDepth() >= maxDiffuseDepth)
{
return(null);
}
IntersectionState istate = previous.getIntersectionState();
scene.trace(r, istate);
return(istate.hit() ? ShadingState.createFinalGatherState(previous, r, i) : null);
}
public Color traceRefraction(ShadingState previous, Ray r, int i)
{
// limit path depth and disable caustic paths
if (previous.getRefractionDepth() >= maxRefractionDepth || previous.getDiffuseDepth() > 0)
{
return(Color.BLACK);
}
IntersectionState istate = previous.getIntersectionState();
scene.trace(r, istate);
return(istate.hit() ? shadeHit(ShadingState.createRefractionBounceState(previous, r, i)) : Color.BLACK);
}