Hi, I am trying to make ArUco (http://www.uco.es/investiga/grupos/ava/node/26) works with OSG.
I am using basic example from ArUco with OpenGL and I am creating same visualisation using OSG. When I draw cube by OpenGL, it is right on marker. When I use OSG cube is missplaced. The core is rewrite projection and modelview matrices which I get from AruCo from OpenGL to OSG. I am using viewer.realize();, not viewer.run(); OpenGL: glMatrixMode(GL_PROJECTION); glLoadMatrixd(proj_matrix); glMatrixMode(GL_MODELVIEW); glLoadMatrixd(modelview_matrix); OSG: projectionMatrix.set(proj_matrix); viewer->getCamera()->setProjectionMatrix(projectionMatrix); modelViewMatrix.set(modelview_matrix); viewer->getCamera()->setViewMatrix(modelViewMatrix); (also tried viewer->getCameraManipulator()->setByMatrix(modelViewMatrix);) I have tried lot of ways to make these two cubes (OpenGL and OSG) to overlap (add/remove camera manipulator, difference matrices, transpose matrices, ...), but no luck so far. I tried to set own projection and modelview matrices to get the cubes on exact same place. I have tried basic identity matrix as projection matrix, but I had to change Z coordinate to -1 to get OSG cube in right place. Are coordinates systems different in OpenGL, OSG? It is possible that projection matrix from ArUco is correct only for OpenGL and I need to adjust matrix before using it by OSG? Or could the problem be in my way of setting matrices using OSG? I will be very glad for your opinions and help. Thank you! Cheers, Igor ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=66314#66314 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
