I USE OSG IN QT (whith visual c++ 2010), BUT THE FIRE AND SMOKE (PARTICLE)
don't move with the model , i use this code to create these effects:
//to get the intersection with the terrin
osg::Vec3 posCallback::getCurrentPosition()
{
osg::Vec3d pos(0,0,0);
mapNode->getTerrain()->getWorldCoordsUnderMouse(view,Xpos,Ypos,pos);//pos is
vector
return pos;
}
//create the effect
osg::Node* createExplode(osg::Vec3 a)
{
osg::Group* explode = new osg::Group() ;
osg::Vec3 wind(1.0f,0.0f,0.0f);
osg::Vec3 position=a;
osgParticle::ExplosionEffect* explosion = new
osgParticle::ExplosionEffect(position, 14.0f,11);
osgParticle::ExplosionDebrisEffect* explosionDebri = new
osgParticle::ExplosionDebrisEffect(position, 4.0f,11);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position,
100000.0f,7);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position,
1000.0f,3);
fire->setEmitterDuration(smoke->getEmitterDuration());
fire->setParticleDuration(smoke->getParticleDuration());
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
//fire->setWind(wind);
explode->addChild(explosion);
explode->addChild(explosionDebri);
explode->addChild(smoke);
explode->addChild(fire);
return explode ;
}
//add the model and the smoke+fire to the position transform to move theme
together:
post=new osg::PositionAttitudeTransform();
root->addChild(post);
post->addChild( model3D ); //osg::Node at 0,0,0
post->addChild(createExplode(osg::Vec3(0,0,0) );//at the center 0,0,0
post->setPosition(getCurrentPosition());
//I add some animation (of position) to the post
//but when the model change its position the fire and smoke don't change thiere
position, they still in the center
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=48613#48613
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
