// BETWEEN FRAME OPERATION
void VisCalcFrustDist::calculateEntityVisibility(Ogre::Node* regionNode, Ogre::Node* node, bool recurse) {
if (recurse && node->numChildren() > 0) {
// if node has more children nodes, visit them recursivily
Ogre::SceneNode::ChildNodeIterator nodeChildIterator = node->getChildIterator();
while (nodeChildIterator.hasMoreElements()) {
Ogre::Node* nodeChild = nodeChildIterator.getNext();
// 'false' causes it to not visit sub-children which are included in parent and pos relative to parent
calculateEntityVisibility(regionNode, nodeChild, false);
visChildren++;
}
}
visNodes++;
// children taken care of... check fo attached objects to this node
Ogre::SceneNode* snode = (Ogre::SceneNode*)node;
// the camera needs to be made relative to the region
// Ogre::Vector3 relCameraPos = LG::RendererOgre::Instance()->m_camera->getPosition() - regionNode->getPosition();
// float snodeDistance = LG::RendererOgre::Instance()->m_camera->getPosition().distance(snode->_getWorldAABB().getCenter());
// float snodeDistance = relCameraPos.distance(snode->getPosition());
float snodeDistance = LG::RendererOgre::Instance()->m_camera->getDistanceFromCamera(regionNode, snode->getPosition());
Ogre::SceneNode::ObjectIterator snodeObjectIterator = snode->getAttachedObjectIterator();
while (snodeObjectIterator.hasMoreElements()) {
Ogre::MovableObject* snodeObject = snodeObjectIterator.getNext();
if (snodeObject->getMovableType() == "Entity") {
visEntities++;
Ogre::Entity* snodeEntity = (Ogre::Entity*)snodeObject;
// check it's visibility if it's not world geometry (terrain and ocean)
if ((snodeEntity->getQueryFlags() & Ogre::SceneManager::WORLD_GEOMETRY_TYPE_MASK) == 0) {
// computation if it should be visible
// Note: this call is overridden by derived classes that do fancier visibility rules
bool shouldBeVisible = this->CalculateVisibilityImpl(LG::RendererOgre::Instance()->m_camera, snodeEntity, snodeDistance);
if (snodeEntity->isVisible()) {
// we currently think this object is visible. make sure it should stay that way
if (shouldBeVisible) {
// it should stay visible
visVisToVis++;
}
else {
// not visible any more... make invisible nad unload it`
/*
Ogre::Vector3 cPos = LG::RendererOgre::Instance()->m_camera->getPosition();
Ogre::Vector3 rPos = regionNode->getPosition();
Ogre::Vector3 sPos = snode->getPosition();
LG::Log("VisToInVis: cPos=<%f,%f,%f>, rPos=<%f,%f,%f>, sPos(%s)=<%f,%f,%f>, d=%f",
cPos.x, cPos.y, cPos.z,
rPos.x, rPos.y, rPos.z,
snode->getName().c_str(),
sPos.x, sPos.y, sPos.z,
snodeDistance);
*/
snodeEntity->setVisible(false);
snode->needUpdate(true);
visVisToInvis++;
if (!snodeEntity->getMesh().isNull()) {
queueMeshUnload(snodeEntity->getMesh());
}
}
}
else {
// the entity currently thinks it's not visible.
// check to see if it should be visible by checking a fake bounding box
if (shouldBeVisible) {
// it should become visible again
if (!snodeEntity->getMesh().isNull()) {
// queueMeshLoad(snodeEntity, snodeEntity->getMesh());
LG::OLMeshTracker::Instance()->MakeLoaded(snodeEntity->getMesh()->getName(),
Ogre::String(""), Ogre::String("visible"), snodeEntity);
}
// snodeEntity->setVisible(true); // must happen after mesh loaded
visInvisToVis++;
}
else {
visInvisToInvis++;
}
}
}
}
}
}