Ron Parker wrote:

> On Mon, 23 Apr 2001 16:59:49 -0400, Lothar Esser wrote:
> >Hi,
> >
> >  I would like to know if it is possible to render an image on
> >transparent background. Initially I thought of
> >something like background {color <1,1,1> transmit 1} but it does not
> >seem to work ( background is still white )
> >I know that I can post-process an image by using say ImageMagick and set
> >all white background pixels to fully transparent. However I would like
> >to skip this extra step if possible.
>
> You might try rendering to a format that supports an alpha channel, and
> turn on the +UA option.  Beware, though, that antialiasing will introduce
> a "fringe" of your background color.
>
> --
> Ron Parker   http://www2.fwi.com/~parkerr/traces.html
> My opinions.  Mine.  Not anyone else's.

Excellent, thanks a bundle !

--
Dr. Lothar Esser
NIH / NCI
Tel. 301-435-6163
email les### [at] helixnihgov

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