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Robert, You are right. I just tried pulling my
files into osgviewer, and there was no jitter. However, when I load them in my
viewer (derived from osgProducer::Viewer and heavily modified), I get jitter.
I guess it must be something I did to my viewer. Thank you for your help. Andrew From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Robert Osfield Hi Andrew, On 10/16/06, Weitz,
Andrew C. <[EMAIL PROTECTED]>
wrote: Hello, I leverage OSG for viewing geo-located models of
cityscapes. The top node of each model is a PAT that positions the model
in its correct location. Because the models are geo-located, the PATs
consist of double-precision values. When I load several models into the viewer, they appear to
jitter as I move around. However, if I first subtract a constant offset
from every PAT to center it near (0, 0, 0), the jitter does not occur.
This re-centering method works fine for displaying localized areas, but it does
not allow me to display global datasets. Is there a way to display a global dataset with
double-precision transforms without seeing this jitter effect? Thank you, Andrew
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