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
>
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