Jean-Sébastien Guay wrote:
> From scratch, I couldn't find another cull callback that did things
> before and after the traverse() in the examples... Any suggestions?
I dug back into my e-mail archives and found a message from Robert on
10/7/2003 that I
used as my inspiration:
There isn't at present a away to disable the computation of the near far for a
subgraph via settings on Node's. However, what you might be able to try
would be to disable the near far computation via a NodeCallback attached to
the skydome subgraph. Something like
struct MyCullCallback : public osg::NodeCallback
{
virtual void operator()(Node* node, NodeVisitor* nv)
{
osgUtil::CullVisitor* cv =
dynamic_cast<osgUtil::CullVisitor*>(nv);
osgUtil::CullVisitor::ComputeNearFarMode saveComputeNearFar;
if (cv)
{
saveComputeNearFar = cv->getComputeNearFarMode()
cv->setComputeNearFarMode(
osgUtil::CullVisitor::COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES);
}
traverse(node,nv);
if (cv)
{
saveComputeNearFar = cv->getComputeNearFarMode()
cv->setComputeNearFarMode(saveComputeNearFar);
}
}
}
Now, there's some missing semicolons there, but those are easy to fix. Oddly
though, it
looks like he's recommending switching to
COMPUTE_NEAR_FAR_USING_BOUNDING_VOLUMES and I
think it should be DO_NOT_COMPUTE_NEAR_FAR. Also, the lower saveComputeNearFar =
cv->getComputeNearFarMode() should not be there. But, I think this demonstrates
you're on
the right track, and maybe just need to debug what's really happening at
runtime.
> J-S
--
Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com
PixelSense Landsat processing now available! http://www.alphapixel.com/demos/
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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