public override bool TryToIntersect(Ray ray, ref Intersection intersection)
{
var rayInObjectWorld = WorldToObjectTransformation.TransformRay(ray);
if (rayInObjectWorld.Direction.Y == 0f)
{
return(false);
}
var t = -rayInObjectWorld.Origin.Y / rayInObjectWorld.Direction.Y;
if (t < rayInObjectWorld.Start || t > rayInObjectWorld.End)
{
return(false);
}
var intersectionPoint = rayInObjectWorld.PointAtTime(t);
intersection.Point =
WorldToObjectTransformation.InverseTransformation.TransformPoint(ref intersectionPoint);
var normal = new Vector3(0, 1, 0);
intersection.NormalVector =
WorldToObjectTransformation.InverseTransformation.TransformNormal(normal).Normalized();
intersection.Distance = (ray.Origin - intersection.Point).Length;
intersection.PointDifferentialOverU = new Vector3(1, 0, 0);
intersection.PointDifferentialOverV = new Vector3(0, 0, 1);
return(true);
}
public override bool Intersect(Ray ray)
{
var rayInObjectWorld = WorldToObjectTransformation.TransformRay(ray);
if (rayInObjectWorld.Direction.Y == 0f)
{
return(false);
}
var t = -rayInObjectWorld.Origin.Y / rayInObjectWorld.Direction.Y;
return(!(t < rayInObjectWorld.Start) && !(t > rayInObjectWorld.End));
}
