Yes ,I konw it .But when I do this,it's wrong.Can you tell me why?
class PHandler : public osgGA::GUIEventHandler {
public:
PHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa)
{
osgViewer::Viewer* viewer = dynamic_cast<osgViewer::Viewer*>(&aa);
osg::Group* group = dynamic_cast<osg::Group*>(viewer->getSceneData()) ;
group->setDataVariance(osg::Object::DYNAMIC) ;
osgParticle::ExplosionEffect* ee
=dynamic_cast<osgParticle::ExplosionEffect*>(group->getChild(1)) ;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::PUSH):
{
if(ee->areAllParticlesDead())
{
group->removeChild(1) ;
}
}
return false;
default:
return false;
}
}
}_______________________________________________
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