CGTalk - Link a weight map?

dfaris

10-15-2005, 12:25 AM

Does anyone know if there is a way to link a weight maps strength to bone rotation?
So lets say you have a shoulder and as the arm lifts up you could increase/decrease the strength of the weight map on the shoulder? So that the top of the shoulders weight map would get stronger and the arm pit part would get weaker? Oh and it would only work on some of the points in the weight map.

Thanks

Decade

10-15-2005, 01:04 AM

Well, by using the weight node, mix node & point node you could in theory mix between two scource maps in realtime & connect this to bone rotation - but it would be a hell of a task to get it all set up (at least for me). I have produced an expresso which can divide a symmetrical face shape into two asymmetrical ones which when both turned up form exactly the original shape. I used the data from two weight maps to weight the changes in points over the mesh. But what you want to achieve will be even harder. So I think theoretically possible at least.
The more common approach seems to be do a best effort weight map & then then use bone driven morph shapes to finesse in each direction.

Darter

10-15-2005, 01:08 AM

This might be of interest:

http://forums.cgsociety.org/showthread.php?t=281039&highlight=vertexmorph

wuensch

10-16-2005, 12:24 AM

dfaris

10-16-2005, 01:17 AM

yup, with the vertexmorph-expresso this should be no problem--
but I agree, bone-driven morphs are a much more precise fix for shoulders.
Get Cactus Dans CD morph, that already has a bone-rotational link function (and much faster morphs).

Olli

I have that already and it works great but the way C4D does its rotations messes it up sometimes. It does for me anyway. lol

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