//-----------------------------------------------------------------------
void InstanceBatch::_notifyCurrentCamera( Camera* cam )
{
mCurrentCamera = cam;
//See DistanceLodStrategy::getValueImpl()
//We use our own because our SceneNode is just filled with zeroes, and updating it
//with real values is expensive, plus we would need to make sure it doesn't get to
//the shader
Real depth = Math::Sqrt( getSquaredViewDepth(cam) ) -
mMeshReference->getBoundingSphereRadius();
depth = std::max( depth, Real(0) );
Real lodValue = depth * cam->_getLodBiasInverse();
//Now calculate Material LOD
/*const LodStrategy *materialStrategy = m_material->getLodStrategy();
//Calculate LOD value for given strategy
Real lodValue = materialStrategy->getValue( this, cam );*/
//Get the index at this depth
unsigned short idx = mMaterial->getLodIndex( lodValue );
//TODO: Replace subEntity for MovableObject
// Construct event object
/*EntityMaterialLodChangedEvent subEntEvt;
subEntEvt.subEntity = this;
subEntEvt.camera = cam;
subEntEvt.lodValue = lodValue;
subEntEvt.previousLodIndex = m_materialLodIndex;
subEntEvt.newLodIndex = idx;
//Notify LOD event listeners
cam->getSceneManager()->_notifyEntityMaterialLodChanged(subEntEvt);*/
//Change LOD index
mMaterialLodIndex = idx;
MovableObject::_notifyCurrentCamera( cam );
}
//-----------------------------------------------------------------------
void InstanceBatch::_notifyCurrentCamera( Camera* cam )
{
mCurrentCamera = cam;
//See DistanceLodStrategy::getValueImpl()
//We use our own because our SceneNode is just filled with zeroes, and updating it
//with real values is expensive, plus we would need to make sure it doesn't get to
//the shader
Real depth = Math::Sqrt(getSquaredViewDepth(cam)) - getBoundingRadius();
depth = std::max( depth, Real(0) );
Real lodValue = depth * cam->_getLodBiasInverse();
//Now calculate Material LOD
/*const LodStrategy *materialStrategy = m_material->getLodStrategy();
//Calculate LOD value for given strategy
Real lodValue = materialStrategy->getValue( this, cam );*/
//Get the index at this depth
unsigned short idx = mMaterial->getLodIndex( lodValue );
//TODO: Replace subEntity for MovableObject
// Construct event object
/*EntityMaterialLodChangedEvent subEntEvt;
subEntEvt.subEntity = this;
subEntEvt.camera = cam;
subEntEvt.lodValue = lodValue;
subEntEvt.previousLodIndex = m_materialLodIndex;
subEntEvt.newLodIndex = idx;
//Notify LOD event listeners
cam->getSceneManager()->_notifyEntityMaterialLodChanged(subEntEvt);*/
// Change LOD index
mMaterialLodIndex = idx;
mBeyondFarDistance = false;
if (cam->getUseRenderingDistance() && mUpperDistance > 0)
{
if (depth > mUpperDistance)
mBeyondFarDistance = true;
}
if (!mBeyondFarDistance && cam->getUseMinPixelSize() && mMinPixelSize > 0)
{
Real pixelRatio = cam->getPixelDisplayRatio();
Ogre::Vector3 objBound =
getBoundingBox().getSize() * getParentNode()->_getDerivedScale();
objBound.x = Math::Sqr(objBound.x);
objBound.y = Math::Sqr(objBound.y);
objBound.z = Math::Sqr(objBound.z);
float sqrObjMedianSize = std::max(
std::max(std::min(objBound.x, objBound.y), std::min(objBound.x, objBound.z)),
std::min(objBound.y, objBound.z));
// If we have a perspective camera calculations are done relative to distance
Real sqrDistance = 1;
if (cam->getProjectionType() == PT_PERSPECTIVE)
sqrDistance = getSquaredViewDepth(cam->getLodCamera()); // it's ok
mBeyondFarDistance =
sqrObjMedianSize < sqrDistance * Math::Sqr(pixelRatio * mMinPixelSize);
}
if (mParentNode)
{
MovableObjectLodChangedEvent evt;
evt.movableObject = this;
evt.camera = cam;
cam->getSceneManager()->_notifyMovableObjectLodChanged(evt);
}
mRenderingDisabled = mListener && !mListener->objectRendering(this, cam);
// MovableObject::_notifyCurrentCamera( cam ); // it does not suit
}
