[Virtools] 2D Picking and camera clipping planes

[Klaus-Jürgen Quast <quast@xxxxxxxx>]

the Ray Intersection BB does not take into account the near or far 
clipping planes of the active camera. Of course this should be the 
default as no user will try to interact with objects or faces of objects 
not visible.

Is there any workaround known to pick only faces of objects visible in 
the frustrum of an active perspective camera?

May be a solution is to use the Ray Intersection BB. But how to compute 
the Ray Origin and Ray Direction on the basis of a window relative mouse 
position vector (click point)?

Klaus

--

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Dr. Klaus-Jürgen Quast
ENTEC GmbH - Agentur für neue Medien in der Medizin
Rathausallee 10
D-53757 Sankt Augustin

phone	+49 2241 92 4871
mobil	+49 170 380 4871
fax	+49 2241 92 4877

email	quast@xxxxxxxx
net	www.entec.de
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