HI Philip,
Could you try another compiler under OSX as this looks like a compiler
bug to me.
Robert.
On 7 February 2013 04:34, Philip Lamb <p...@eden.net.nz> wrote:
> Hi all,
>
> I'm running into an interesting bug in my code which manifests as behaviour
> that works on one platform (Windows) and not on another (OS X) with the same
> OSG code. (Using OSG trunk, around 3.1.4)
>
> I am using the following node visitor to reset animations attached to
> transform nodes:
>
> class ResetAnimationNodesVisitor : public osg::NodeVisitor
> {
> public:
>
>
>
> ResetAnimationNodesVisitor():
> osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
>
>
>
> virtual void apply(osg::Transform& transform)
> {
> osg::NodeCallback *nc = transform.getUpdateCallback();
> osg::AnimationPathCallback* apc =
> dynamic_cast<osg::AnimationPathCallback*>(nc);
> if (apc) {
> apc->reset();
> apc->update(transform);
> }
> traverse(transform);
> }
> };
>
> This visitor is instantiated on a node thus:
>
> void resetAnimationTime(osg::ref_ptr<osg::Node> modelNode)
> {
> ResetAnimationNodesVisitor ranv;
> modelNode->accept(ranv);
> }
>
> When compiled and run on an animated model under Windows (compiled with
> Visual Studio 2010 SP1) all works as expected. When the exact same code is
> compiled and run under OS X (using Xcode 4.5.2, with LLVM 4.2.1) the dynamic
> cast to osg::AnimationPathCallback* is always NULL.
>
> I have checked that RTTI is not disabled (it's on by default, and no errors
> are produced by the dynamic_cast<>, and that indeed things are as expected
> with this snippet inside apply():
>
> if (nc) osg::notify(osg::NOTICE) << "UpdateCallback: className is "
> << std::string(transform.getUpdateCallback()->className()) << " and
> type_id.name() is " typeid(transform.getUpdateCallback()).name() <<
> std::endl;
>
> which produces the output:
>
> UpdateCallback: className is AnimationPathCallback and type_id.name() is
> PN3osg12NodeCallbackE
>
> So it looks like a failure somewhere in RTTI. Both typeid and the
> dynamic_cast<> fail to convert the osg::NodeCallback* to an
> osg::AnimationPathCallback*. Yet clearly, the callback IS the right type, as
> evidenced by OSG's className() function's output.
>
> Any ideas about where this kind of issue might be coming from?
>
> Regards,
> Phil.
>
> _______________________________________________
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
_______________________________________________
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
