How to effect material with geometry?

[RErender]

I remember seeing a tutorial or plugin that was able to effect the material of one object by the proximity of another object but can not remember the jist ofit. My goal is to have a wet map type of effect on rocks where they intersect water geometry.

Any have an idea how to do it?

[percydaman]

hey cool..i could use that for the exact same reason as you. great minds think alike or something...

[vance3d]

i think you are thinking of the chameleon(spelling?) plugin