Felipe Lemus wrote on Tuesday, October 27, 2009 1:57 PM:
> tankDataType::tankDataType(osg::Node* n)
> {
> rotation = 0;
> tank = dynamic_cast< osgSim::DOFTransform*> (n);
> }
>
> void tankDataType::updateTurretRotation()
> {
> rotation -= 0.01;
> tank->setCurrentHPR( osg::Vec3(rotation,0,0) );
> }
This code assumes that tanks is never null (i.e. that the top node of
the loaded file is a DOFTransform), but this is not guaranteed; the
dynamic_cast could return null, then updateTurretRotation() would
segfault.
You should use a NodeVisitor to find the DOFTransform in the loaded
model and pass that to the tankDataType constructor.
HTH,
--
Bryan Thrall
FlightSafety International
bryan.thr...@flightsafety.com
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