Trying to merge 3d models (say a plane) and have it appear to interact with a
photo (A scan of a aircraft carrier). Getting perspective correct I have
figured out with creating dummies that line up with the image, like a surface
that matches the angle & perspective of the landing strip for the plane to land
on. But how do I create a surface that would hold a shadow for the plane but
be transparent for the scan/background to show up through? One work around is
that I created a copy of the object and in the spotlight viewport. I scaled it
flat and made it black, it doesn't work very well, especially if the sun is @
an exteme angle, and it doesn't make rendering time any faster.
Thanx for any ideas!!