Hi everyone, Thanks for your all your responses. The only node mask that I was modifying was that of the terrain database and was leaving the masks for the other items at their default of 0xffffffff.
It looks like I need to do more managed of the NodeMasks than I originally thought. Thanks! Jason On Thu, Jul 3, 2008 at 1:37 PM, Jean-Sébastien Guay < [EMAIL PROTECTED]> wrote: > Hi Jason, > > I created a node mask for the terrain, 0x1, and used setNodeMask to set it >> on the root node of the terrain database. >> >> I am using the computeIntersections function of Viewer and passed along >> that traversal mask hoping that it would only intersect the paged database. >> However, the computeIntersections function is computing intersections >> against all of the nodes in the scene graph instead of just the paged >> database. >> > > The default node mask is 0xFFFFFFFF, and you don't mention if you set the > node mask on your text items (or other objects) to something else. No matter > what the traversal mask is you give to computeIntersections, it will return > true when ANDed with 0xFFFFFFFF... > > You can for example set your terrain's mask to 0x1, and your GUI elements > or other things to 0x2, and then give 0x1 as the traversal mask in > computeIntersections, and it will only intersect with the terrain. > > I generally reserve one bit of the nodemask to items that are pickable, I > find that makes comprehension simpler. Then I just have to make sure to set > each object's nodemask appropriately at creation. > > Hope this helps, > > J-S > -- > ______________________________________________________ > Jean-Sebastien Guay [EMAIL PROTECTED] > http://www.cm-labs.com/ > http://whitestar02.webhop.org/ > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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