Drawing bins in multiple channels

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From: Scott Herod (herod++at++rtset.com)
Date: 05/08/2000 09:41:44

Hello,

  I have a question about how drawing bins work with a geoset that is
shared between multiple channels. In particular, I have a geoset that
I want to draw first in a pair of channels. In order to do that I
got a free bin in the first channel and attached it to the geoset.
Doing the naive thing and using drawBin with the bin number in both
channels' draw callback doesn't seem to draw correctly on the second
channel. Do I need to clone the geoset or have to a bin number from
each channel and switch the bin associated with the geoset each in
each draw callback?

  Also, an unrelated question, is it possible to not draw the alpha
component of an opaque object. I'm experimenting with DST* blending
and don't want the object I draw to mess up my preset alpha plane
values.

Scott Herod 

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RT-SET Broadcast Graphics Division          Voice : 303-465-1556 x122
100 Technology Drive, Suite 100               FAX : 303-465-2012
Broomfield, CO 80021 USA                    Email : herod++at++rtset.com

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