public static Intersection GetPrimitiveOnRay(Ray ray, Vector3 relViewPos, IEnumerable<IEditorPrimitive> primitives)
{
var items = RayPrimitivesIntersect(ray, relViewPos, primitives);
Intersection[] isect = new Intersection[(int)PrimitiveType.MaxTypes];
foreach (var i in items) {
//float dist = i.point.DistanceTo(camera.Position);
float dist = ray.DistanceToPoint(i.point);
float f = i.primitive.GetSelectFactor(ray.start, ray.dir, i.point);
int sp = (int)i.primitive.PrimitiveType;
if (isect [sp].primitive == null || f < i.primitive.GetSelectFactor (ray.start, ray.dir, isect[sp].point))
isect[sp] = i;
}
return isect.FirstOrDefault(i => i.primitive != null);
}
