ComputeBoundsVisitor only computes bounds for drawables. ie geometry.
2009/2/11 Engvall Åsa <asa.engv...@saabgroup.com>:
> Hi osg-users!
>
> I want to use a ComputeBoundsVisitor for finding the bounds of an object.
> The object belongs to the class GroundObject, which is derived from
> osg::Node.
>
> Please have a look at this short function. The visitor is probably not
> executed, and the resulting bounding box is not valid.
>
> void GroundObject::calculateDistanceToGround(void)
> {
> // Calculate distance from local origin to ground.
> osg::ComputeBoundsVisitor cbv;
> accept(cbv);
> osg::BoundingBox box = cbv.getBoundingBox();
> if (!box.valid()) ssPrintf("Bounding box is not valid!\n");
> _distanceToGround = osg::absolute(box.zMin());
> }
>
> What is wrong here?
> Thanks in advance,
>
> Åsa Engvall
>
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>
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