"Bruce Clay" writes: > I am working on a model viewer that has portions based on the > osgsidebyside example. I can load a tank model that has both > DOFTransforms and Multiswitches then rotate the turret and elevate the > gun and everything works correctly. > > I loaded an aircraft model with 15 DOFTransforms and no switches. The > transforms are for the individual control surfaces of the aircraft. > When I try to rotate the control surfaces they seem to rotate about > the center of the model body rather than about the "hinged" point. > When I looked at the the translate values for all of the surfaces they > are 0.0 so there is no information available to do the translate, > rotate, translate sequence. There was a mention of a pivot point in a > previous message on this forum. The PositionAttitudeTransform has a > setPivot method but not the DOFTransform. > > Both models are osgb format. > > How can the pivot point be set so the control surfaces pivot about their hing?
Hi, Bruce. A somewhat primitive technique would be to convert the file to osgt format, and then replace your DOFTransform nodes with PositionAttitudeTransform nodes with a text editor. You could even set the pivot points there as well. You can take the osgt of the correct model as a reference. That should be faster than doing the same thing programmatically. -- Alberto _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org