public static Color trace(Ray r) {
Point pt = null;
Point nPt;
ObjectR oInter = null;
double minDist = Double.MAX_VALUE;
for (ObjectR o : ObjectR.objects) {
nPt = o.intersect(r);
double dist = calc.distance(nPt.coord, cam.point.coord);
if (dist < minDist) {
pt = nPt;
minDist = dist;
oInter = o;
}
}
if (pt != null) {
// Find Light source
for (Light s : Light.lights) {
Ray shadow = new Ray(pt.coord, s.dim);
for (ObjectR oShadow : ObjectR.objects) {
if (!Light.lights.contains(oShadow) && oShadow.intersect(shadow) != null) {
if (oShadow == oInter) {
return shade(oInter, pt, s, cam);
} else {
return black;
}
}
}
return shade(oInter, pt, s, cam);
}
}
return background;
}
