Hi David, search in TrackballManipulator.cpp for "Pushing forward". At a certain zoom level, the center (focus position) gets moved. I think you can influence this with the setMinimumZoomScale method. Another options is to make your own trackball with the push forward code removed or some other functionality.
Panning also moves the focus point. rgds jp David Erdelyi wrote: > Hi All, > > Is there a way to specify an absolute pivot point to a scene's > root while spinning in osgviewer? It seems to move around...?? > > Let me explain. The "box" of interest sits in the middle of a star > field that is 100x bigger and then as I zoom-in, I want to rotate > around "the box" in the exact middle but I can't seem to make > it consistently stay/line-up at 0 0 0 where it should be locked. > > Thanks, > > David > > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ -- This message is subject to the CSIR's copyright, terms and conditions and e-mail legal notice. Views expressed herein do not necessarily represent the views of the CSIR. CSIR E-mail Legal Notice http://mail.csir.co.za/CSIR_eMail_Legal_Notice.html CSIR Copyright, Terms and Conditions http://mail.csir.co.za/CSIR_Copyright.html For electronic copies of the CSIR Copyright, Terms and Conditions and the CSIR Legal Notice send a blank message with REQUEST LEGAL in the subject line to [EMAIL PROTECTED] 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://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
