I think what you want is this great plugin from Helge Mathee:
http://217.160.138.15/mt/projects/Image_To_Weightmap/imageToWM.zip
http://www.mindthink.de
Cheers,
Christian Rittener
> -----Original Message-----
> From: owner-xsi(at)Softimage.COM
> [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Joe Laffey
> Sent: July 2, 2006 23:38
> To: Softimage XSI Mailing List
> Subject: UV Texture -> Weightmap
>
>
> Is there some way to set the values of a weightmap to match
> those of a UV
> texturemap?
>
> I need to control hair cutting/density based on the incidence
> angle of the
> geometry (incidence to the Y axis). I want to have no hair on
> polys facing
> downward, but blend the hair so that it is full density facing up.
>
> So my thought was to use the incidence shader to make a
> rendermap. But
> then I realized that I don't seem to be able to connect the
> cut map or
> density map to a Texturemap. I can connect it to the UV
> coords, but to the
> values of a texture.
>
> Any suggestions? Thanks,
>
> --
> Joe Laffey | Visual Effects for Film and Video
> LAFFEY Computer Imaging | -------------------------------------
> St. Louis, MO | Show Reel http://LAFFEY.tv/?e01644
> USA | -------------------------------------
> . | -*- Digital Fusion Plugins -*-
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