If I apply 2 quat on the same vector in the same line or in two instruction, the result is the same...
so q = q1*q2 look the 2 rotation accumulation, depending of the order of course. thanks, Vincent. 2008/10/31 Paul Melis <[EMAIL PROTECTED]> > Vincent Bourdier wrote: > >> Hi >> >> I was not sure that the * operator would compute the quaternion that I'm >> looking for. >> I looked in the sources, but the code is very hard to understand for me. >> > It probably does what you expect: compute a combined quaternion. > Just try it with 2 rotations like 90 around X and 90 around Y and transform > a single vec3 to check > > Paul > >> >> If you are sure, I will do it of course. >> thanks >> Vincent. >> >> 2008/10/31 Paul Melis <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >> >> Vincent Bourdier wrote: >> >> Hi, >> >> This a math problem, depending on OSG. >> >> I need to apply 2 rotation to a vector. I would be very simple >> if I can cumulate the 2 quat in one. >> How to do it ? Do Osg implement a method to combine two >> rotations ? >> >> Can't you simply multiply them? I.e >> osg::Quat q1, q2, qf; >> // set q1 and q2 >> qf = q1 * q2; >> >> Paul >> >> >> thanks. >> >> Regards, >> >> Vincent. >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> <mailto:osg-users@lists.openscenegraph.org> >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> <mailto:osg-users@lists.openscenegraph.org> >> >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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