Cast shadows onto a matte object?

[jman66]

Hi, I have a scene that as a 'floor polygon' set to a matte color. It needs to be one solid color because it will eventually needs to integrate seamlessly with the background of a web page....

Anyway, I need to cast the shadow of the object that sits on top of the floor, and still maintain a 'solid color' except for where the shadow hits.

Any ideas of how i should go about this?

[toby]

It might be easier to not have it a matte object but set the floors' alpha channel to "shadow density" (under the advanced tab in the surface editor) and then delete the background in Photoshop. note, the floor color should be the same as the web page to help it blend in

[jman66]

toby, thanks for the info... I was looking for a good way to separate out the shadow information, but looked over the alpha channels.

Now, the little bit of photoshop work will be easy.