In the end it's only 12 nodes.

One pretty easy way to adjust the shape of the bruise is to make multiple bruise blenders. Use other cy, cy, br values. Then you'd combine two bruises to make a new poly-bruise by combining their blender functions. One for the color, one for the final blend.

I'd combine them using the Min function. In otherwords, your "r' value would be the minimum "r" with respect to all your cx, cy, br coordinates.

If that's not clear, I can post an example.

 

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)