/* Find the best (smallest) zone that contains a point
*/
PCZone * PCZSceneManager::findZoneForPoint(Vector3 & point)
{
PCZone * zone;
PCZone * bestZone = mDefaultZone;
Real bestVolume = Ogre::Math::POS_INFINITY;
ZoneMap::iterator zit = mZones.begin();
while ( zit != mZones.end() )
{
zone = zit->second;
AxisAlignedBox aabb;
zone->getAABB(aabb);
SceneNode * enclosureNode = zone->getEnclosureNode();
if (enclosureNode != 0)
{
// since this is the "local" AABB, add in world translation of the enclosure node
aabb.setMinimum(aabb.getMinimum() + enclosureNode->_getDerivedPosition());
aabb.setMaximum(aabb.getMaximum() + enclosureNode->_getDerivedPosition());
}
if (aabb.contains(point))
{
if (aabb.volume() < bestVolume)
{
// this zone is "smaller" than the current best zone, so make it
// the new best zone
bestZone = zone;
bestVolume = aabb.volume();
}
}
// proceed to next zone in the list
++zit;
}
return bestZone;
}
