I have a small universe, with the 3 standard dimensions: X,Y and Z.

Given these things:
- The (x,y,z) coordinates of the "camera"
- the direction that the camera is pointing
- the (x,y,z) coordinate of a point in space

Can someone tell me the maths expression that will resolve this info into an (x,y) coordinate, so I can plot it on a picturebox.

My brain is aching, please help!