[osg-users] Updating a PositionAttitudeTransform node from another PositionAttitudeTransform node

[Voerman, L.]

I'm not sure what you are trying to accomplish, maybe a
custom osg::Node::ComputeBoundingSphereCallback can help;
osg::Node::setComputeBoundingSphereCallback(cb) will call a custom callback
when a node or it's children changes.
Laurens.

On Wed, Oct 9, 2019 at 3:41 PM Dan johansson <johansson_dan at hotmail.com>
wrote:

> Hi!
>
> Thanks for the reply, i understand the issue. I'm not really understanding
> why this isn't built in automatically though. This simple code seemed to do
> the trick even with multiple Pat's chained
>
>
> Code:
>
> osg::NodePathList fullNodePath = node2->getParentalNodePaths();
> osg::NodePath lastNodePath = fullNodePath.at(fullNodePath.size() - 1);
>
> osg::Matrixd lastNodePositionMatrix =
> osg::computeLocalToWorld(lastNodePath);
> osg::Vec3f lastNodePosition = lastNodePositionMatrix.getTrans();
>
> node2->setPosition(lastNodePosition);
>
>
>
>
> Is there a good way to add a callback to this update that is _not_ on
> every render but rather when the specific Pat have been
> moved/rotated/scaled?
>
> Regards Dan
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=76812#76812
>
>
>
>
>
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