Yes, this is what the overlay node does for me. But I am unable to understand, why the stretching occurs only 'at' some specific angles.
Regards Vaibhav Bansal -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of J.P. Delport Sent: Thursday, November 19, 2009 3:47 PM To: OpenSceneGraph Users Subject: Re: [osg-users] Using OsgSim Overlay Hi, Vaibhav Bansal wrote: > Hello jp, > > Thanks for the quick reply. > How do I check if the 'resolution' of ovelay geometry is changing. imagine the following: You want to overlay a 1024x1024 checkerboard onto the earth and you have a 512x512 overlay texture. If you view the whole earth it obviously would not look good - too much detail to fit into the texture. What the view dependent modes try to do is this: When you zoom in, you only see a piece of the checkerboard, so now the 512x512 texture can contain only a piece of the checkerboard and so you see "more detail" of the overlayed geometry. I think this is the effect you are seeing when you are moving the view around. jp > > Regards > Vaibhav Bansal > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of J.P. > Delport > Sent: Thursday, November 19, 2009 2:41 PM > To: OpenSceneGraph Users > Subject: Re: [osg-users] Using OsgSim Overlay > > Hi Vaibhav, > > Vaibhav Bansal wrote: >> Hello, >> >> I have added a geometry as an overlay over another geometry. >> The overlay texture seems to distort(stretch) under certain viewing > angles. >> It seems the projected texture is generating incorrect texture > coordinates. > > The texture coordinates might be OK, but the resolution of your > overlayed geometry might change in the generated overlayed texture. What > happens in OBJECT_DEPENDENT_WITH_ORTHOGRAPHIC_OVERLAY? Does the > resolution/stretch stay the same? > > jp > >> The white area is the overlaySubgraph geometry, and the colored area is > the >> Overlay Node (base) geometry. >> The overlay mode is VIEW_DEPENDENT_WITH_ORTHOGRAPHIC_PROJECTION. >> >> Can anyone suggest where should I start troubleshooting. >> >> Thanks >> Vaibhav Bansal >> >> >> ------------------------------------------------------------------------ >> >> >> ------------------------------------------------------------------------ >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> osg-users mailing list >> [email protected] >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
