Hi,
I have the same problem and decided to choose the callback solution.
My callback calculates( so far) useable values for near and far plane, but this
values are completely ignored.
My current (maybe wrong ;) ) implementation is:
Code:
double cloudNear, cloudFar;
computeNearFarClouds(cloudNear, cloudFar);
if (cloudNear < znear) znear = cloudNear;
if (cloudFar > zfar) zfar = cloudFar;
if (zfar < minFar) zfar = minFar;
bool ret =
stockCullVisitor->clampProjectionMatrixImplementation(projection, znear, zfar);
if (skyDrawable)
{
skyDrawable->setSkyboxSize(((zfar - znear) * 0.5 +
znear) * 2.0);
}
return ret;
I install my callback with
Code:
cb = new skySilverLining_projectionMatrixCallback( atmosphere,
viewer->getCamera(), sceneRoot);
viewer->getCamera()->setClampProjectionMatrixCallback(cb);
cb->setSkyDrawable(skyDrawable);
Now I question myself what I have to do in detail to use the callback.
I guess that the functions
Code:
clampProjectionMatrixImplementation(osg::Matrixf& projection, double& znear,
double& zfar) const;
clampProjectionMatrixImplementation(osg::Matrixd& projection, double& znear,
double& zfar) const;
are called by the callback mechanism, right?
What should I do with the three parameters? Is it sufficient to set the
variables znear and zfar, or do I have to perform any operations on the
projection variable?
I hope anyone can enlight my mind..
Thank you very much for your support,
Torben[/code]
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=16371#16371
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