Hi J-S,
Viewer::updateTraversal() and CompositeViewer::updateTraversal() both
traverse the scene graph and explictly camera's update callbacks.
What these updateTraversal() methods do is switch of the traversal of
the camera's subgraph when the camera subgraphs are traversed, so the
children
Hi Colin,
I tried adding an update callback to the top level camera and that did
work. I checked the code and it does call accept:
346:
_camera-accept(*_updateVisitor.get());
So it should work correctly (as of 2.8.2)
Sorry, I was mistaken in saying that the cameras did not get the update
Hi Robert,
What these updateTraversal() methods do is switch of the traversal of
the camera's subgraph when the camera subgraphs are traversed, so the
children won't be traversed. This is done so that the scene graphs
aren't traversed multiple times per frame, but... I believe in your
case
Hi Colin,
Your analysis of the what is required is spot on, the only little
change I've made to it is to remove the (osg::Node node =
*_camera.get()); as one can simple use the _camera ref pointer
directly thus:
// traverse the scene graph to generate the rendergraph.
// If the camera
Greetings All,
I added a CullCallback to the camera of a view. I found it was not
getting hit. After much searching I believe it is due to the
implementation in the SceneView:
Specifically at line 957:
// traverse the scene graph to generate the rendergraph.
for(unsigned int
Colin Branch wrote:
// traverse the scene graph to generate the rendergraph.
for(unsigned int childNo=0;
childNo_camera-getNumChildren();
++childNo)
{
_camera-getChild(childNo)-accept(*cullVisitor);
}
Is there a reason that it is simply not replace that
Hi Colin,
As Paul suggests CullVisitor::apply(osg::Camera) handles in scene
graph camera's, so will not handle the viewer level scene graph
correctly so _camera-accept(*cullVisitor) won't behave correctly.
Perhaps you could try replacing the for loop with
_camera-traverse(*cullVisitor) as this
Hi Robert,
As Paul suggests CullVisitor::apply(osg::Camera) handles in scene
graph camera's, so will not handle the viewer level scene graph
correctly so _camera-accept(*cullVisitor) won't behave correctly.
Perhaps you could try replacing the for loop with
_camera-traverse(*cullVisitor) as
J-S,
I tried adding an update callback to the top level camera and that did
work. I checked the code and it does call accept:
346:
_camera-accept(*_updateVisitor.get());
So it should work correctly (as of 2.8.2)
-Colin
On 12/15/2009 2:10 PM, Jean-Sébastien Guay wrote:
Hi Robert,
As Paul
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