Hi ! please forget about the previous question: it was simply due to the fact that the _modelView matrix was shared between multiple objects because of a desing error.
cheers, Manu. 2011/11/21 Emmanuel Roche <[email protected]> > Hi everyone, > > I'm wondering about a strange thing I noticed when trying to use > osgUtil::pushModelViewMatrix() directly: > > - Suppose I have a class where I store a ref pointer on a RefMatrix: > > osg::ref_ptr<osg::RefMatrix> _modelView. > > - Suppose in that class I have a function called during the cull traversal: > > draw(osgUtil::CullVisitor& cv) { > > osg::Matrixd mat = .... // I compute the matrix I want to use as model > view here. > > #if STRANGE_BEHAVIOR > _modelView->set(mat) > cv.pushModelViewMatrix( _modelView.get(), osg::Transform::RELATIVE_RF) > #else > cv.pushModelViewMatrix(new osg::RefMatrix(mat), > osg::Transform::RELATIVE_RF) > #endif > > // drawing something here with a member geode object: > _geode->accept(cv); > cv.popModelViewMatrix(); > > } > > => If I try the "STRANGE_BEHAVIOR" section, I get nothing displayed > properly (even it the OSG Stats report a good number of vertices). If I use > the other section everythig is fine... > > Any idea what I'm missing here ?? I think it would be better if I could > avoid creating a new object on the heap for each call to this function :-) > > cheers, > Manu. > >
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