#include "OgreVisibilityTerrainSceneManager.h"
#include "OgreOctreeHierarchyInterface.h"
#include "OgreVisibilityOptionsManager.h"
#include <OgreMath.h>
#include <OgreIteratorWrappers.h>
#include <OgreRenderSystem.h>
#include <OgreCamera.h>

//#include <windows.h>

namespace Ogre {
//namespace GtpVisibility {
//-----------------------------------------------------------------------
VisibilityTerrainSceneManager::VisibilityTerrainSceneManager(GtpVisibility::VisibilityManager *visManager)
:mVisibilityManager(visManager)
{
	mHierarchyInterface = 
		new OctreeHierarchyInterface(this, mDestRenderSystem);

	setVisibilityManager(visManager);
	mShowBoxes = true;
	//mDisplayNodes = true;
	mShowBoundingBoxes = true;
	mMaxDepth = 20;
}
//-----------------------------------------------------------------------
VisibilityTerrainSceneManager::~VisibilityTerrainSceneManager()
{
	delete mHierarchyInterface;
}
//-----------------------------------------------------------------------
void VisibilityTerrainSceneManager::_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(mOctree, mCameraInProgress);
	mVisibilityManager->ApplyVisibilityCulling();

#ifdef GTP_VISIBILITY_MODIFIED_OGRE
	_deleteRenderedQueueGroups();
#endif

	//-- render overlay
	clearSpecialCaseRenderQueues();
	SceneManager::_renderVisibleObjects( );
}
//-----------------------------------------------------------------------
void VisibilityTerrainSceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
{
	// must be empty because objects are found and rendered in an interleaved fashion
	// in _renderVisibibleObjects 
}
//-----------------------------------------------------------------------
void VisibilityTerrainSceneManager::_updateSceneGraph(Camera* cam)
{
	//mHierarchyInterface->setNumSceneNodes((int)mSceneNodes.size());
	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);

#ifdef GTP_VISIBILITY_MODIFIED_OGRE
    mHierarchyInterface->SetNumOctreeNodes(mNumOctreeNodes);
#endif
	TerrainSceneManager::_updateSceneGraph(cam);
}
//-----------------------------------------------------------------------
bool VisibilityTerrainSceneManager::setOption(const String & key, const void * val)
{
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		setOption(key, val) || TerrainSceneManager::setOption(key, val);
}
//-----------------------------------------------------------------------
bool VisibilityTerrainSceneManager::getOption(const String & key, void *val)
{
	if (key == "NumHierarchyNodes")
	{
		* static_cast<unsigned int *>(val) = (unsigned int)mNumOctreeNodes;
		return true;
	}
	
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		getOption(key, val) && TerrainSceneManager::getOption(key, val);
}
//-----------------------------------------------------------------------
bool VisibilityTerrainSceneManager::getOptionValues(const String & key, StringVector  &refValueList)
{
	return TerrainSceneManager::getOptionValues( key, refValueList);
}
//-----------------------------------------------------------------------
bool VisibilityTerrainSceneManager::getOptionKeys(StringVector & refKeys)
{
	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
		getOptionKeys(refKeys) || TerrainSceneManager::getOptionKeys(refKeys);
}
//-----------------------------------------------------------------------
void VisibilityTerrainSceneManager::setVisibilityManager(GtpVisibility::VisibilityManager *visManager)
{
	mVisibilityManager = visManager;
}
//-----------------------------------------------------------------------
GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::getVisibilityManager( void )
{
	return mVisibilityManager;
}
//} // namespace GtpVisibility
} // namespace Ogre