Hi Judie, You may check that all the nodes contained into your graph have the clone method implemented. Do you have some custom nodes into the graph ?
On Thu, Apr 17, 2008 at 6:00 PM, Judie <[EMAIL PROTECTED]> wrote: > Hi Serge, > > Thanks for that piece of information. I am still not getting a "deep > copy" of the nodes, however. > > I did an experiment and I went to the top level node: > > osg::Node* subgraph = m_sceneView->getSceneData(); > > and I used this one for the deep copy > > osg::ref_ptr<osg::Node> copyA = static_cast<osg::Node *>(subgraph- > >clone(osg::CopyOp::DEEP_COPY_ALL )); > > And now I get a few nodes in the new copy. My list now contains 3 > items which makes sense because the tree is like: > > subgraph > \ > GroupA > \ > A > / | \ > B C D > > where A has 32 items. > > > So there is stoppage at node A and no more copy or else there is a > problem with the visitor. > > findNodeVisitor nv(FINDNODETYPE_NODETYPE| > FINDNODETYPE_FINDALL,"Geode"); > > copyA->accept(nv); > > std::vector<osg::Node*> nodeList = nv.getNodeList(); > > int length = nodeList.size(); > > now length is 3 (but at this level it should be 35). > > Judie > > > On Apr 17, 8:04 am, "Serge Lages" <[EMAIL PROTECTED]> wrote: > > Hi, > > > > Just cast the clone() return to an osg::Node * and it should work : > > > > osg::ref_ptr<osg::Node> copyA = static_cast<osg::Node *>(A->clone( > > osg::CopyOp::DEEP_COPY_ALL )); > > > > > > > > > > > > On Thu, Apr 17, 2008 at 4:54 PM, Judie <[EMAIL PROTECTED]> > wrote: > > > Hi Paul, > > > > > Does that work on your compiler? I tried that as well, but I got the > > > following error: > > > > > error C2440: 'initializing' : cannot convert from 'class osg::Object > > > *' to 'class osg::ref_ptr<class osg::Node>' > > > No constructor could take the source type, or constructor > > > overload resolution was ambiguous > > > > > So then I tried using the parent of the node which is a group and > > > create a group from that using the deep copy: > > > > > osg::Ref_Ptr<osg::Group> CopyAParent = new osg::Group(*AParent, > > > osg::CopyOp::DEEP_COPY_ALL); > > > > > but it still doesn't have any nodes in the list: > > > > > osg::Node *test = m_CopyAParent ->getChild(0); > > > findNodeVisitor nv1(FINDNODETYPE_NODETYPE|FINDNODETYPE_FINDALL, > > > "Geode"); > > > test->accept(nv1); > > > std::vector<osg::Node*> nodeList = nv1.getNodeList(); > > > int length = nodeList.size(); > > > > > here length is 0. > > > > > Thanks, > > > > > Judie > > > > > On Apr 16, 6:47 pm, "Paul Martz" <[EMAIL PROTECTED]> wrote: > > > > Ha! What a coincidence. I just encountered this exact same thing > today. > > > > > > When you call "new Node", you get a Node. Nodes don't have children, > > > only > > > > Groups have children. So you don't want to use the copy constructor > if > > > you > > > > want to copy a whole subtree. > > > > > > I discovered that OSG offers an alternative to the copy constructor > to > > > get > > > > around just this very issue. Use the clone() method. So, instead, > your > > > code > > > > should look like this: > > > > > > osg::ref_ptr<osg::Node> copyA = A->clone( > osg::CopyOp::DEEP_COPY_ALL > > > ); > > > > > > "copyA" will be a ref_ptr to a Node, but the actual type of the > object > > > > pointed to will be a clone of A, so if A is a Group (with children), > > > then > > > > copyA will also be a Group. > > > > > > Later, > > > > -Paul > > > > > > > -----Original Message----- > > > > > From: [EMAIL PROTECTED] > > > > > [mailto:[EMAIL PROTECTED] On Behalf Of > Judie > > > > > Sent: Wednesday, April 16, 2008 2:21 PM > > > > > To: [EMAIL PROTECTED] > > > > > Subject: [osg-users] Using a visitor after a DEEP_COPY_ALL > > > > > doesn't returnanything > > > > > > > HI, > > > > > > > I want to make a copy of an existing node and all it's > > > > > children, and then find all the geometry and make it transparent. > > > > > > > I do something like > > > > > > > osg::ref_ptr<osg::Node> copyA = new osg::Node(*A, > > > > > osg::CopyOp::DEEP_COPY_ALL); > > > > > > > where A is the original Node tree. > > > > > > > If I try to use the findNodeVisitor: > > > > > > > findNodeVisitor nv(FINDNODETYPE_NODETYPE|FINDNODETYPE_FINDALL, > > > > > "Geode"); > > > > > copyA->accept(nv); > > > > > std::vector<osg::Node*> nodeList = nv.getNodeList(); int > > > > > length = nodeList.size(); > > > > > > > then length is 0. > > > > > > > If I do the same with the original node: > > > > > > > findNodeVisitor nv(FINDNODETYPE_NODETYPE|FINDNODETYPE_FINDALL, > > > > > "Geode"); > > > > > A->accept(nv); > > > > > std::vector<osg::Node*> nodeList = nv.getNodeList(); int > > > > > length = nodeList.size(); > > > > > > > then length is 32. > > > > > > > Also if I try to cast the copyA to a osg::Group* I get a null > pointer: > > > > > > > osg::Group* temp = dynamic_cast<osg::Group*>(copyA); > > > > > > > temp is a null pointer. > > > > > > > So did I miss a step somewhere? > > > > > > > Judie > > > > > > > _______________________________________________ > > > > > osg-users mailing list > > > > > [EMAIL PROTECTED] > > > > >http://lists.openscenegraph.org/listinfo.cgi/osg-users-opensce > > > > > negraph.org > > > > > > _______________________________________________ > > > > osg-users mailing list > > > > [EMAIL PROTECTED]:// > > > lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph...-Hide > > > quoted text - > > > > > > - Show quoted text - > > > _______________________________________________ > > > osg-users mailing list > > > [EMAIL PROTECTED] > > >http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph. > .. > > > > -- > > Serge Lageshttp://www.tharsis-software.com > > > > _______________________________________________ > > osg-users mailing list > > [EMAIL PROTECTED]:// > lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph...- Hide > quoted text - > > > > - Show quoted text - > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Serge Lages http://www.tharsis-software.com
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