} // end func. redirect
public List <Scientrace.Trace> partialReflectRefract(Scientrace.Object3d fromObject3d, Scientrace.Object3d toObject3d,
Scientrace.Intersection intersection, UnitVector surfaceNormal)
{
/*double oldrefindex = fromObject3d.materialproperties.refractiveindex(this);
* double newrefindex = toObject3d.materialproperties.refractiveindex(this);*/
List <Scientrace.Trace> newTraces = new List <Trace>();
Scientrace.Trace refractTrace = this.fork("_pr");
refractTrace.currentObject = toObject3d;
refractTrace.traceline.startingpoint = intersection.enter.loc;
Scientrace.UnitVector normal = intersection.enter.flatshape.plane.getNorm()
.orientedAgainst(this.traceline.direction)
.tryToUnitVector();
// Evaluate absorption by toObject3d
refractTrace.absorpByObject(toObject3d, normal, fromObject3d);
if (refractTrace.isEmpty())
{
newTraces.Add(refractTrace);
return(newTraces);
}
// CHECK whether (partial) reflection occurs...
if ((toObject3d.materialproperties.reflects) || ((intersection.leaving) && (fromObject3d.materialproperties.reflects)))
{
//double refcoef = toObject3d.materialproperties.reflection(refractTrace, surfaceNormal, this.currentObject);
double refcoef = toObject3d.materialproperties.reflection(refractTrace, surfaceNormal, fromObject3d.materialproperties);
Scientrace.Trace reflectTrace = refractTrace.fork("_R"); //.clone(); reflectrace.nodecount++;
reflectTrace.intensity = refractTrace.intensity * refcoef;
//intensity shouldn't spawn nor disappear here
refractTrace.intensity = refractTrace.intensity - reflectTrace.intensity;
//Scientrace.Spot normspot = new Scientrace.Spot(norm.toLocation()+intersection.enter.loc, null, 1);
//CHANGED 20131030
//reflectrace.traceline = newtrace.reflectAt(intersection.enter.flatshape.plane);
reflectTrace.traceline = refractTrace.reflectLineAbout(reflectTrace.traceline, surfaceNormal);
//ADDED @ 20130122: the parial internal reflected trace should have the current object as oldobject.
reflectTrace.currentObject = this.currentObject; //CURRENT OBJECT DOES NOT CHANGE FOR (partial)INTERNAL REFLECTION!
newTraces.Add(reflectTrace);
}
this.initCreatedRefractTrace(refractTrace, surfaceNormal, fromObject3d, toObject3d);
newTraces.Add(refractTrace);
return(newTraces);
} // end func partialReflectRefract
