On 1 November 2016 at 21:45, Trajce Nikolov NICK <[email protected]> wrote: > Hi Community, > > anyone knowing how to achieve this and with will to share? > > Thanks a bunch as always !!
Have a look at the API's... First one to look at is osg::Polytope, create one of these with a unit frustum. This will be in clip space. Next step transform this Polytope by the projection matrix using the transformProvidingInverse() method (to transform a plane you multiple it by the inverse of that matrix), so in our case the projection matrix transform from eye space into clip space which is the inverse of the transform we intend, but thanks to the way that planes are transformed we can just use the projection matrix directly as long as we use the transformProvidingInverse(). See the src/osg/CullStack.cpp to see this in action. Then transform into object coordinates using the same method by providing the view and model matrices. Robert. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
