Well, if you can get a 3x3, you should just be able to start with a 4x4 identity matrix and then copy the 3x3 into the upper-left corner of that matrix.
Ryan On Wed, Jun 1, 2011 at 9:08 AM, Kevin DeMott <kdem...@belcan.com> wrote: > I'm trying to find a way to convert a four sided polygon (non-rectangular) > into a rectangle in 3D space. I would like this to be some type of matrix > transform as I need to be able to go both ways. IE from the polygon to a > rectangle and from a rectangle to the polygon. > > I can do a similar operation in QT with the QTransform::quadToQuad. The > problem with that approach is I end up with a 3x3 matrix whereas I need a > 4x4 for the osg/opengl calls. I have not had much luck stuffing the 3x3 into > a 4x4. > > Thanks > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=40008#40008 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Ryan Pavlik HCI Graduate Student Virtual Reality Applications Center Iowa State University rpav...@iastate.edu http://academic.cleardefinition.com
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