Hello
First off I'm using OSG 1.0.
I am deriving a class from osg::Drawable::CullCallback. I'm overloading
the cull function [virtual bool cull(osg::NodeVisitor* nv, osg::Drawable*
drawable, osg::State*) const]. I am trying to get the eye location in
World Coordinates. It seems as though CullVisitor::getEyePoint() returns
the eye location in Local Coords. I've tried tried multiplying by
osg::computeLocalToWorld(nv->getNodePath()) and
osg::computeWorldToLocal(nv->getNodePath()), but I've had no success.
In some cases, I already know that my drawable has one MatrixTransform
above it so I calculate the following:
osg::Matrixd::inverse(xfrom->getMatrix()) * osg::Vec4d(nv->getEyePoint(),
1). This works. But it won't work for cases when there's more than 1
Transfrom on the nodepath. That's why I was trying
osg::computeLocalToWorld. The best thing would be to get the eye point in
world coordinates directly without having to calculate it repeatedly from
local coordinates in each drawable's CullCallback. Any suggestions?
Also I want to reply to some response made to other questions I have
submitted. How do I do that?
Thank you,
Jeff
Computer Sciences Corporation
Registered Office: 2100 East Grand Avenue, El Segundo California 90245, USA
Registered in USA No: C-489-59
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