public Ray make_ray(double x, double y)
{
//s = e + ux + vy − wd
// d = s − e
Ray r = new Ray(eye, u.scale(x).add(v.scale(y).subtract(w.scale(this.dist))));
//System.out.println("x:" + x + " y: " + y + " D: " + r.direction);
r.direction.normalize();
return(r);
}
public void add_reflection(Vec3 hit_point, Geometry o, int recursion_level)
{
Vec3 n = o.get_surface_n(hit_point);
// reflection = 2(n · v)n - v
Vec3 r_dir = n.scale((2 * n.dot(Program.proj.eye))).subtract(Program.proj.eye);
r_dir.normalize();
Ray reflection = new Ray(hit_point, r_dir);
reflection.prev_hit_id = o.get_id();
//System.out.println("Level: " + recursion_level);
bool r_hit = reflection.trace(recursion_level + 1);
if (r_hit)
{
// add in reflection
reflection.ret_color.scalar_update(o.reflectiveness);
this.ret_color.add_reflection(reflection.ret_color);
}
}
