Hi, I don't really have a direction, as in the case with a mouse (x,y point and into the screen). I have a point in 3-space, and I need to know if that point is inside any model. This goes with my other question relating to moving something around. Once I determine that the wand is inside a model, then I want the model to follow the wand around.
Thanks, Dave Adrian Egli wrote: > Hi Dave, > > i don't understand what you are doing. Do you like to get a surface > point back? Do you like to get a > line intersected point back. Do you like a point inside the model back. > So one technique is the line > intersection. You define a line segment by a starting point and a ending > point, then let intersect this > with the scene As result you get back all intersections, and then you > can decide wether the point is > on the line and has intersected with the models surface or not. > > may this short answer help you, may not. > > /adegli > > 2007/8/15, Dave Pugmire <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>: > > Hi, > I need to determine the following. Given a 3D point, which models > contain the point. I'm not seeing anything to do this off hand. > Something easy is to grab the bounding volume for the Geode, and see if > the point is inside, but I'd like to get something more accurate. > > Thanks, > Dave > > _______________________________________________ > osg-users mailing list > [email protected] > <mailto:[email protected]> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > -- > ******************************************** > Adrian Egli > > > ------------------------------------------------------------------------ > > _______________________________________________ > 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
