Hi, I have problem draw a points correctly on image. I want to manualy doing projection of vertex and draw on image. I set a camera position:
Code: osg::Matrixf l; l.makeLookAt(osg::Vec3(0, 0, 500), osg::Vec3(0,0,0), osg::Vec3(0,1,0)); Projection matrix: Code: osg::Matrixf p; p.makePerspective(osg::DegreesToRadians(50.0f), 720/568, 1, 1000); and next i compute new vertex cordinate (vertex is osg::Vec3): Code: vertex = vertex*l; next i multiple new vertex cordinate by perspective matrix Code: vertex4 = osg::Vec4(vertex, 1); vertex4 = vertex4*p; vertex4.set(vertex4.x()/vertex4.w(), vertex4.y()/vertex4.w(), vertex4.z()/vertex4.w(), vertex4.w()); Now I draw vertex to image but result is diffrent with image with i get from 3dmax with this same camera parametr. I think I need multiple with viewport matrix Code: osg::Matrixf v ; osg::Viewport* viewport = new osg::Viewport(0,0,720,568); v = viewport->computeWindowMatrix(); But when i do it vertex cordinate is too big. Could someone tell what i doing wrong? ... Thank you! Cheers, Tomek ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=27695#27695 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
