Shadow Catching

In order to realistically catch and create shadows I created a ground plane and a proxy tree with a Shadow/Matte material applied. This will allow me to use them both as a guide for the animation and to receive shadows and create realistic ambient shadows. I initially thought I would have to mask the tree out manually in post production, however after creating the spline and setting up the animation path around the tree I found the Shadow/Matte material does this automatically. The downside of this is that the tree model I am using will have to be built to match the tree in the footage exactly if the snake is to look like it is actually wrapping around the real tree.

The lights and shadows used in these screenshots are not those to be used in the final sequence, but clearly illustrate the effectiveness of the Matte/Shadow material.