public static double3 point(ray_d r, double distance)
{
return(r.origin + distance * r.direction);
}
public static bool equal(ray_d r0, ray_d r1)
{
return(all(equal(r0.origin, r1.origin) & equal(r0.direction, r1.direction)));
}
public ray(ray_d r)
{
origin = r.origin.toFloat3();
direction = r.direction.toFloat3();
}