Hi Torben & Mourad,
I have added a check against the getNodePath() being empty() to
computeNodeCenterAndRotation() method and checked it into svn/trunk.
The relevant code now looks like:
osg::NodePath nodePath;
if (_trackNodePath.getNodePath(nodePath) && !nodePath.empty())
nodeCenter =
osg::Vec3d(nodePath.back()->getBound().center())*localToWorld;
else
nodeCenter = osg::Vec3d(0.0f,0.0f,0.0f)*localToWorld;
Could you let me know how you get on?
Robert.
On Fri, Feb 11, 2011 at 9:04 AM, Torben Dannhauer <[email protected]> wrote:
> Hi Robert,
>
> The stack trace is:
>
> Code:
>
>> osg71-osgGAd.dll!std::_Vector_const_iterator<osg::Node
>> *,std::allocator<osg::Node *> >::operator+=(int _Off=-1) Zeile 161 + 0x60
>> Bytes C++
> osg71-osgGAd.dll!std::_Vector_iterator<osg::Node
> *,std::allocator<osg::Node *> >::operator+=(int _Off=-1) Zeile 376 C++
> osg71-osgGAd.dll!std::_Vector_iterator<osg::Node
> *,std::allocator<osg::Node *> >::operator-=(int _Off=1) Zeile 388 C++
> osg71-osgGAd.dll!std::_Vector_iterator<osg::Node
> *,std::allocator<osg::Node *> >::operator-(int _Off=1) Zeile 393 + 0xc Bytes
> C++
> osg71-osgGAd.dll!std::vector<osg::Node *,std::allocator<osg::Node *>
> >::back() Zeile 800 + 0x2a Bytes C++
>
> osg71-osgGAd.dll!osgGA::NodeTrackerManipulator::computeNodeCenterAndRotation(osg::Vec3d
> & nodeCenter={...}, osg::Quat & nodeRotation={...}) Zeile 171 + 0x12 Bytes
> C++
>
>
>
>
> It is caused in NodeTrackerManipulator::computeNodeCenterAndRotation(..):
>
> Code:
>
> nodeCenter = osg::Vec3d(nodePath.back()->getBound().center())*localToWorld;
>
>
>
>
> It Crashes because nodePath is empty, so nodePath.back does not work.
>
> Where is the best place to ensure that nodepath is not empty?
>
> Thank you!
>
> Cheers,
> Torben
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=36544#36544
>
>
>
>
>
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