Hi, may be this is a newbie question but I would like to understand the reason of this behaviour.
I have to calculate the coordinate of a 3D point wrt a different coordinate reference. The new coordinate reference is simply rotated wrt the first one. I tried two different implementations with different results. osg::Vec3d eyeOffset(0.0, 0.0, 300.0); osg::Quat rotation(osg::DegreesToRadians(0.0), osg::Z_AXIS, osg::DegreesToRadians(0.0), osg::Y_AXIS, osg::DegreesToRadians(45.0), osg::X_AXIS); osg::Vec3d localEyeOffset = rotation * eyeOffset; osg::Matrixd rotationMatrix(rotation); osg::Vec3d localEyeOffset2 = rotationMatrix * eyeOffset; I expected to have the same result for localEyeOffset and localEyeOffset2, while this is what I get: localEyeOffset is (0.0, -212.132, 212.132) localEyeOffset2 is (0.0, 212.132, 212.132) Can you explain me why? Regards, Gianni ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=70034#70034 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
