[Opensg-users] Mouse Position in 3D

[Andreas K. <ko...@hl...>]

Hi!

I would like to map the location of my 2d mouse pointer to 3d
coordinates within the scene. As there seems to be no posiblity to get
the view plane out of the viewport, I tried the following:

FrustumVolume frustum;
camera->getFrustum(frustum, *viewport);
Plane near = frustum.getNear();
Line ray;
calcViewRay(ray, mousex, mousey, *viewport);
Pnt3f ip; // intersection point ?
near.intersect(ray, ip);

Is this the right way to go? Somehow, the results are not quite as
expected :-\

-- 
Andreas Kopecki                High Performance Computing Center (HLRS)
                               Visualisation Department
Tel. ++49-711-6855789          Allmandring 30a, D-70550 Stuttgart

ko...@hl...                                      http://www.hlrs.de/
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