I have Shave & haircut for cinem4D 8.5 and this concept looks very similar to what we have in Shave. the styling tool in such a programs would be very processor intensive and the hair generated sends render times up dramaticly a standalone that "connects" to poser as shave does for C4D,MAX etc. would be the best approach if possible IMHO I cant imagine implementing something like this into posers old code base without it being agonizingly slow.

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