Hi Pawan,
You need to use a ref_ptr<Node> instead of a raw C pointer to make
sure the ref counting in the scene graph doesn't delete the object
when you remove it from the scene graph.
See http://donburns.net/OSG/Articles/RefPointers/RefPointers.html
Robert.
On 2/16/07, Pawan Harish <[EMAIL PROTECTED]> wrote:
Hi,
Thanks Robert, for the previous answer. I am facing trouble removing
and adding children using addChild() of osg::Group. Following is the code
main()
{
osg::Group *rootnode = new osg::Group;
osg::MatrixTransform *rotator = new osg::MatrixTransform;
osg::Node *cessna = osgDB::readNodeFile("cessna.osg");
osg::Node *glider = osgDB::readNodeFile("glider.osg");
osg::Node *cow = osgDB::readNodeFile("cow.osg");
rootnode->addChild(glider);
rootnode->addChild(rotator);
rotator->addChild(glider);
rotator->addChild(cessna);
rotator->addChild(cow);
viewer.setSceneData(rootnode);
MultiOut::instance()->SetRootNode(rootnode);
viewer.realize();
while( !viewer.done() )
{
viewer.sync();
viewer.update();
viewer.frame();
}
//Rotator has 3 children glider, cow, cessna
for(int i=0;i<int(rotator->getNumChildren());i++)
{
osg::Node *node = rotator->getChild(i);
rotator->removeChild(i);
cout<<"Removed Child: "<<node->getName()<<endl;
rotator->addChild(node);
//When cow is removed and added again this gives seg fault
cout<<"Re-Added Child: "<<node->getName()<<endl;
}
}
When the child is a non-group it removes and adds it successfully but if
it is a group I get a segmentation fault.
Pawan Harish
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