#include <OgreMath.h>
#include <OgreIteratorWrappers.h>
#include <OgreRenderSystem.h>
#include <OgreCamera.h>
#include "OgreVisibilitySceneManager.h"
#include "OgreSceneNodeHierarchyInterface.h"
#include "OgreVisibilityOptionsManager.h"

//#include <windows.h>

namespace Ogre {
//namespace GtpVisibility {
//-----------------------------------------------------------------------
VisibilitySceneManager::VisibilitySceneManager(GtpVisibility::VisibilityManager *visManager)
:mVisibilityManager(visManager)
{
	mHierarchyInterface = new SceneNodeHierarchyInterface(this, mDestRenderSystem);
}
//-----------------------------------------------------------------------
VisibilitySceneManager::~VisibilitySceneManager()
{
	delete mHierarchyInterface;
}
//-----------------------------------------------------------------------
void VisibilitySceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
{
	// empty because we have to find objects in _renderVisibleObjects
}
//-----------------------------------------------------------------------
void VisibilitySceneManager::_renderVisibleObjects()
{
		//-- render background
	clearSpecialCaseRenderQueues();
	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);

	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
	SceneManager::_renderVisibleObjects( );
#ifdef GTP_VISIBILITY_MODIFIED_OGRE
	_deleteRenderedQueueGroups();
#endif
	//-- render visible objects (i.e., all but overlay)
	clearSpecialCaseRenderQueues();
	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);

	mHierarchyInterface->InitFrame(mSceneRoot, mCameraInProgress);
	mVisibilityManager->ApplyVisibilityCulling();

#ifdef GTP_VISIBILITY_MODIFIED_OGRE
	_deleteRenderedQueueGroups();
#endif

	//-- render overlay
	clearSpecialCaseRenderQueues();
	SceneManager::_renderVisibleObjects( );

	clearSpecialCaseRenderQueues();
}
//-----------------------------------------------------------------------
void VisibilitySceneManager::_updateSceneGraph(Camera* cam)
{
	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
	
	SceneManager::_updateSceneGraph(cam);
}
//-----------------------------------------------------------------------
bool VisibilitySceneManager::setOption(const String & key, const void * val)
{
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		setOption(key, val) || SceneManager::setOption(key, val);
}
//-----------------------------------------------------------------------
bool VisibilitySceneManager::getOption(const String & key, void *val)
{
	if (key == "NumHierarchyNodes")
	{
		* static_cast<unsigned int *>(val) = (unsigned int)mSceneNodes.size();
		return true;
	}
	
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		getOption(key, val) && SceneManager::getOption(key, val);
}
//-----------------------------------------------------------------------
bool VisibilitySceneManager::getOptionValues(const String & key, StringVector  &refValueList)
{
	return SceneManager::getOptionValues(key, refValueList);
}
//-----------------------------------------------------------------------
bool VisibilitySceneManager::getOptionKeys(StringVector & refKeys)
{
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		getOptionKeys(refKeys) || SceneManager::getOptionKeys(refKeys);
}
//-----------------------------------------------------------------------
void VisibilitySceneManager::setVisibilityManager(GtpVisibility::VisibilityManager *visManager)
{
	mVisibilityManager = visManager;
}
//-----------------------------------------------------------------------
GtpVisibility::VisibilityManager *VisibilitySceneManager::getVisibilityManager( void )
{
	return mVisibilityManager;
}

//} // namespace GtpVisibility
} // namespace Ogre