Hi,
I'm trying to render shapes sitting on a plane and I want the shape to 
cast shadows onto the plane but i want the plane to be a solid color, 
namely white.

Depending on the light and camera position the plane will have gradients 
as expected. I tried setting ambient to 1.0 for the plane but then no 
shadows appear on it. I've also tried setting diffuse to greater than 
1.0 to blow it out but it begins to alias at the edges of the shape and 
it's not always applicable. I also tried rendering two images, with and 
without the shape then using photoshop to remove those pixels that are 
the same but this isn't working out either, extra pixels along edges.

You can see what I'm trying to do here...
<http://homepage.mac.com/lazarusp/media/media.html>
It was very tricky to make that and I was very limited in light and 
camera positions, plus I ultimately had to do some work in photoshop. 

So, is there a way to have a texture that is a solid color, like ambient 
1.0, yet still have shadows cast on it?

-Lazarus

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