Given a plane and a 3D point, transform the 3D point to a 2D coordinate along the plane.

Hi,

There are many ways to 'transform a point to a plane' - you'll have to be more specific.

Simplest is nearest point on plane to point, which *does* use 'd', so I take it its not that.

There also 'axial planar mapping' ala Fredborg's code above. But surely you've done that for the lightmapping in CShop?

Any example of 'real world' usage, please!