//-----------------------------------------------------------------------
void PCZLight::updateZones(PCZone * defaultZone, unsigned long frameCount)
{
//update the zones this light affects
PCZone * homeZone;
affectedZonesList.clear();
mAffectsVisibleZone = false;
PCZSceneNode * sn = (PCZSceneNode*)(this->getParentSceneNode());
if (sn)
{
// start with the zone the light is in
homeZone = sn->getHomeZone();
if (homeZone)
{
affectedZonesList.push_back(homeZone);
if (homeZone->getLastVisibleFrame() == frameCount)
{
mAffectsVisibleZone = true;
}
}
else
{
// error - scene node has no homezone!
// just say it affects the default zone and leave it at that.
affectedZonesList.push_back(defaultZone);
if (defaultZone->getLastVisibleFrame() == frameCount)
{
mAffectsVisibleZone = true;
}
return;
}
}
else
{
// ERROR! not connected to a scene node,
// just say it affects the default zone and leave it at that.
affectedZonesList.push_back(defaultZone);
if (defaultZone->getLastVisibleFrame() == frameCount)
{
mAffectsVisibleZone = true;
}
return;
}
// now check visibility of each portal in the home zone. If visible to
// the light then add the target zone of the portal to the list of
// affected zones and recurse into the target zone
static PCZFrustum portalFrustum;
Vector3 v = getDerivedPosition();
portalFrustum.setOrigin(v);
homeZone->_checkLightAgainstPortals(this, frameCount, &portalFrustum, 0);
}
