| rendering multiple volume objects with a single model [message #28460] |
Wed, 12 December 2001 16:48 |
graves
Messages: 7
Registered: September 2001
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Junior Member |
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Hi all,
I want to render a dataset from an optical tomography experiment, and
include a set of spheres representing the locations of the detectors
for the experiment (which are arranged in a cylinder around the
dataset). So i created one volume object for the data, and one for
each of the 36 spheres, and placed them all in a single model object.
When i render this model, all spheres are visible, regardless of their
position relative to the data. I tried reversing the order in which i
add the data and the spheres to the model, and this resulted in only
the spheres which are completely outside of the data being visible.
That is, even spheres in front of the data are gone, only those along
rays that do not intersect the dataset at all are seen. From the IDL
documentation, it appears that model objects draw their constituent
volumes one at a time, without consideration of the other volumes. So
my question is, is there a simple way for me to render a multi-volume
model so that it does consider all volumes simultaneously?
All workarounds and suggestions are welcome. Thanks in advance,
Ted Graves
graves@helix.mgh.harvard.edu
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