Hi Martin. I'm trying to calculate the normal
vector of a plane based on a known projection of a known 3D vector
onto the plane.
Basically, I'm looking for the
equation of a ray going from the closest point of a 3d cube
(rendered to 2D projection) to my camera. I'm using the convention
that this point is positioned at (0,0,0). Other visible points of
the cube are at (1,0,0), (0,-1,0), (0,0,-1) and so forth. This
would be simple were it possible to invert the cross product but
i'm having a brain block. I hope this makes sense. Any ideas would
be greatly appreciated. Thanks!
Jesse |