2009/5/22 Paul Griffiths <gaffe...@gmail.com>:
> Ive came up with this but it returns outside true every time regardless:
>
>
> Code:
>
> bool outside = false;
> if (obj->getParentWidget() &&
> obj->getParentWidget()->getUsingClipBoundingBox())
> {
> osg::ref_ptr<osg::ClipNode> clipNode =
> obj->getParentWidget()->getClipNode();
> if (clipNode)
> {
> for (unsigned int i = 0; i < clipNode->getNumClipPlanes(); i++)
> {
> osg::ref_ptr<osg::ClipPlane> plane = clipNode->getClipPlane(i);
> osg::Vec4d pl = plane->getClipPlane();
> osg::Vec3d pt = hitr->getWorldIntersectPoint();
> if (( pt.x() * pl.x() + pt.y() * pl.y() + pt.z() * pl.z() + pl.w()
> ) < 0.f)
> {
> outside = true;
> break;
> }
> }
> }
> }
>
>
>
>
> i set the clip node like:
>
> Code:
>
> this->clipBoundingBox.set(pos.x() - this->size.x(),pos.y() -
> this->size.y(),pos.z() - this->size.z(),pos.x() + this->size.x(), pos.y() +
> this->size.y(), pos.z() + this->size.z());
> this->clipNode->createClipBox(this->clipBoundingBox);
> this->panel.setStateSet(this->clipNode->getStateSet());
Okies, if memory serves me correctly, the clip planes aren't in world
coordinates,
I think they are in eye coordinates.
So that would be take the local intersection coordinate and transform it using
computeLocalToEye (in osg/Transform) and test that point.
If that doesn't work, you'll need to post another question for how to do that.
--
http://www.ssTk.co.uk
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