2009/5/19 Ulrich Hertlein <u.hertl...@sandbox.de>: > Hi Cory, > > On 18/5/09 8:43 PM, Cory Riddell wrote: >> >> changes. I don't know what the correct parametric equation for moving a >> camera between two points on the surface of a sphere is. I changed my >> code to move the camera along a chord from point A to point B and that >> seems to work just fine. >> >> Any idea what the parametric equation for the arc connecting to points >> on a sphere is? > The rotation axis is the cross product of the two vectors from A and B to the center of the sphere.
You need to take special care when A & B are almost perpendicular though... In that case you'll just have to chose an up vector and take the cross product of with A or B and that, because you get a zero vector. -- http://www.ssTk.co.uk _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
