See http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials/CameraCont rol
Note the values given to a matrix for HPR are Radians not degrees __________________________________________________________ Gordon Tomlinson Email : [EMAIL PROTECTED] YIM/AIM : gordon3dBrit MSN IM : [EMAIL PROTECTED] Website : www.vis-sim.com www.gordontomlinson.com __________________________________________________________ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Monday, June 23, 2008 6:22 PM To: OpenSceneGraph Users Subject: Re: [osg-users] camera view matrix problems... Paul, I was assuming that setViewMatrix() behaved the same way as the OpenGL modelview matrix, that is, world to eye. I tried negating the translation part which seems to have moved me to the right place but I'm facing straight down on top of my terrain (azimuth view) with my orientation setting at (0.0, 0.0, 0.0). When I change the orientation angles to something other than 0.0, nothing shows up again. I'm confused... All I want to do is fix my camera position and orientation...heading around z, pitch around x, and roll around y. It can't be that hard can it? -Shayne -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Martz Sent: Monday, June 23, 2008 4:13 PM To: 'OpenSceneGraph Users' Subject: Re: [osg-users] camera view matrix problems... The OpenGL view matrix is an inverse transform. Try negating the translation. -Paul ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Monday, June 23, 2008 3:44 PM To: osg-users@lists.openscenegraph.org Subject: [osg-users] camera view matrix problems... I'm attempting to explicitly set the view matrix for a camera in osgViewer. I'm not using viewer->run() so I'm not using the default camera manipulator. Here's the code I'm using: osg::Matrixf vm; vm.setRotate(osg::Quat(0.0, osg::Vec3(0.0, 0.0, 1.0), 0.0, osg::Vec3(1.0, 0.0, 0.0), 0.0, osg::Vec3(0.0, 1.0, 0.0))); vm.setTrans(osg::Vec3f(eyex, eyey, eyez)); viewer->getCamera()->setViewMatrix(vm); I'm expecting to see a view of the terrain that is centered around (eyex, eyey, eyez) and I see nothing. Can someone tell me what I'm doing wrong in the code above? Thanks, -Shayne P.S. When I use the command: viewer->setViewMatrixAsLookAt() with the same eye point (with lookat and up vectors), I can see the terrain as expected. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
