public LightingInfo isIlluminati(
final Vector4 point, Light light, CustomStack stack, final RayCollisionInfo collision) {
if (light instanceof DirectionalLight) {
return new LightingInfo(null, true, light.getDirection(point));
}
final PositionLight pointLight = (PositionLight) light;
Vector4 position = pointLight.getPosition();
Vector4 aux = new Vector4(position);
aux.sub(point);
Ray ray = new Ray(point, aux);
RayCollisionInfo rci = tree.getCollision(point.distanceTo(position) + 0.0001, ray, stack, 0);
if (rci == null) {
if (light instanceof AreaLight) {}
return new LightingInfo(null, !(light instanceof AreaLight), light.getDirection(point));
}
if (rci.obj.material.light != null) {
return new LightingInfo(rci, true, rci.getRay().getDir());
}
return new LightingInfo(null, false, null);
}
