/// <summary>
/// Get the distance from the starting position of the ray in the box's space.
/// If there is no scale transformation between the box and the ray, the distance should be the same
/// as the distance in world space.
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
protected static float? GetIntersectionDistance(BoxNode a, Ray b)
{
Ray bTransformed = b.TransformRay(a.ReferenceNode);
Pair<bool, float> result = bTransformed.Intersects(a.ToMogreAxisAlignedBox());
if (result.first)
return result.second;
return null;
}
protected static bool Intersects(BoxNode a, SphereNode b)
{
Vector3 bTransformedCenter;
float bTransformedSquaredRadius;
TransformSphere(b, a.ReferenceNode, out bTransformedCenter, out bTransformedSquaredRadius);
Vector3 closest = bTransformedCenter.Clamp(a.Min, a.Max);
return closest.SquaredDistance(bTransformedCenter) < bTransformedSquaredRadius;
}
public bool Intersects(BoxNode box)
{
return PrimitiveNode.Intersects(box, this);
}
