Hello, I have a scene which I render into a viewport with a perspective camera. Now I would like to render the same scene from another view point into a different viewport but using an orthographic projection. I have tried to use the MatrixCameraDecoratror class but I'm unable to get it functioning.
What is the best way to solve such a problem? I have used the MatrixCameraDecorator to render the scene into another viewport in perspective view with some translation and rotation modification from the decoratee camera. That does work fine. Then I thought that I could setup an orthographic projection matrix and modify the decorator projection with the functions setPreProjection and setPostProjection: Camera* camera = _view->getCamera(); Matrix ortho; Real32 vs = _view->getPort()->getPixelWidth() / 2; Real32 hs = _view->getPort()->getPixelHeight() / 2; bool ret = MatrixOrthogonal(ortho, -hs, hs, -vs, vs, camera->getNear(), camera->getFar()); Matrix projection, inv_proj; camera->getProjection(projection, _view->getPort()->getPixelWidth(), _view->getPort()->getPixelHeight()); ret = inv_proj.invertFrom(projection); MatrixCameraDecoratorUnrecPtr decorator = MatrixCameraDecorator::create(); decorator->setDecoratee(camera); decorator->setPreProjection(inv_proj); decorator->setPostProjection(ortho); This does not work... Best, Johannes ____________ Virus checked by G DATA AntiVirusKit Version: AVB 22.111 from 20.05.2011 Virus news: www.antiviruslab.com ------------------------------------------------------------------------------ What Every C/C++ and Fortran developer Should Know! Read this article and learn how Intel has extended the reach of its next-generation tools to help Windows* and Linux* C/C++ and Fortran developers boost performance applications - including clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Opensg-users mailing list Opensg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opensg-users
