Hi "Dark Zero",
Could you please use a human-readable name, so mailing list users can
address you with a name?
Your code probably throws an exception cause you are modifying the scene
graph while traversing it.
Simply add your nodes to be removed to a list in your callback and
remove them between frames.
There are multiple ways of doing this, but for starters you might split
the viewer.run into a loop calling
viewer.advance();
viewer.eventTraversal();
viewer.updateTraversal();
viewer.renderingTraversals();
and perform the removal from the scene-graph before the updateTraversal
Cheers
Sebastian
Hi,
There is a Geode whose Geometry is a ball with a MatrixTransform() assigned
above it. It's callback function makes it falls. When the ball intersects with
the ground, I hope to remove it from the scene.
The following code throws exception:
Code:
//inside the ball's callback
virtual void operator()(osg::Node* node ,osg::NodeVisitor* nv)
{
using namespace osg;
MatrixTransform* matrix_node = dynamic_cast<MatrixTransform*>(node);
Matrix matrix = matrix_node->getMatrix();
velocity += Vec3(0, 0, -0.002);
matrix.postMultTranslate(velocity);
matrix_node->setMatrix(matrix);
Vec3 now_position = start_position * matrix;
osgUtil::IntersectVisitor ivXY;
osg::ref_ptr<osg::LineSegment> lineXY = new osg::LineSegment(now_position,
now_position+velocity);
ivXY.addLineSegment(lineXY);
GAME.main_camera->m_pHostViewer->getSceneData()->accept(ivXY) ;
if(ivXY.hits())
{
node->getParent(0)->removeChild(node);
}
return;
}
How to do it correctly? Thank you!
...
Cheers,
DarkZero
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=63915#63915
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