genesis-3d_engine/Engine/app/vegetationfeature/components/vegetationrendercomponent.h

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#ifndef __VEGETATION_RENDER_COMPONENT_H__
#define __VEGETATION_RENDER_COMPONENT_H__

#include "appframework/component.h"
#include "rendersystem/base/PrimitiveGroup.h"
#include "vegetation/vegetation_fwd_decl.h"
#include "vegetation/VegetationObejct.h"
#include "vegetation/InstanceMap.h"

namespace App
{
	//typedef Util::Dictionary<SizeT, MaterialArray> MatrerialListMap;

	/*! \class VegetationRenderComponent
	*  \brief  This is a VegetationRenderComponent class.
	*
	* Be attach with a Actor, used for organizing vegetation data
	*/
	class VegetationRenderComponent: public Component
	{
		__DeclareSubClass(VegetationRenderComponent, Component );


	public:
		struct STR_TERRAINBLOCK
		{
			int xmin;
			int ymin;
			int width;
			int height;
			float heimapX;
			float heimapY;
			float terrainWidth;
			float terrainHeight;
		};

	public:

		VegetationRenderComponent();

		virtual ~VegetationRenderComponent();

		/// setup callbacks for this Component, call by Actor in OnActivate()
		virtual void SetupCallbacks(void);

		/// @Component::SetupAcceptedMessages override to register accepted messages
		virtual void SetupAcceptedMessages();

		/// @Component::SetupAcceptedMessages handle a single message
		virtual void HandleMessage(const GPtr<Messaging::Message>& msg);

		virtual void UpdateRenderLayer();

		/// create a vegeobjet
		GPtr<Vegetation::VegetationObject>& CreateVegetationObject( Vegetation::RenderType etype,  const Resources::ResourceId& meshID = "");

		/// add a valid object
		void AddVegetationObject(const GPtr<Vegetation::VegetationObject>&);

		/// inset a obj
		void InsetVegetationObject(IndexT, const GPtr<Vegetation::VegetationObject>&);

		/// remove a vegeobj
		void RemoveVegetationObject(IndexT);

		void SetShaderId(GPtr<Vegetation::VegetationObject>&, IndexT iSubMesh , const Resources::ResourceId& shaderID);
		/// set meshid 
		void SetMeshID(GPtr<Vegetation::VegetationObject>&, const Resources::ResourceId& );

		void SetMeshID(IndexT, const Resources::ResourceId& );

		/// get vegeobject
		const GPtr<Vegetation::VegetationObject>& GetVegetObject(IndexT index) const;

		/// 
		GPtr<Vegetation::VegetationObject>& GetVegetObject(IndexT index);

		/// get size of vegeobject array
		SizeT GetCountOfObjectArray() const;

		IndexT IntersectInstance( const Actor* camerActor, const Math::float2& mousepos, IndexT nIdx, Math::scalar& fout);

		void NotifiedTerrainChanged(const STR_TERRAINBLOCK&,const Math::scalar& scaleX,const Math::scalar& scaleZ);
		/// called after hole created
		void NotifiedTerrainHole(const STR_TERRAINBLOCK& terrblock);

		void ReCalcBBox(const GPtr<Vegetation::VegetationObject>& vegetObj);

		//	Serialization
		// @ISerialization::GetVersion. when change storage, must add SerializeVersion count
		virtual Version GetVersion() const;

		// @ISerialization::Load 
		virtual void Load( Version ver, AppReader* pReader, const Serialization::SerializationArgs* args );

		// @ISerialization::Save
		virtual void Save( AppWriter* pWriter ) const;

		// copy from other component
		virtual void CopyFrom( const GPtr<Component>& pComponent );
		virtual void GetReferenceResourceId(Util::Array<Resources::ReferenceResource>& list) const;

		virtual void SetVisible(bool bVisible);

		bool CreateInstanceMap(const GPtr<Vegetation::VegetationObject>& obj);

#ifdef __GENESIS_EDITOR__
		virtual void SetEditorVisible(bool bVis);
#endif


	protected:
		/// @Component::OnActivate  called from Actor::ActivateComponents()
		virtual void OnActivate();

		/// @Component::OnDeactivate called from Actor::DeactivateComponents()
		virtual void OnDeactivate();

		// @Component::_OnDestroy called only form Actor::Destroy
		virtual void OnDestroy();

		virtual void OnRenderSceneChanged();

		virtual void _OnBeginFrame();

		virtual void _OnFrame();

		virtual void _OnMoveBefore();

		virtual void _OnMoveAfter();

		void BuildRenderData( void );
		void _BuildRenderData(  GPtr<Vegetation::VegetationObject>&  );

		void UpdateRenderData(void);
		void _UpdateRenderData(  GPtr<Vegetation::VegetationObject>&  );

		void DiscardRenderData(void);
		void _DiscardRenderData(  GPtr<Vegetation::VegetationObject>&  );
		void _CleanRenderData();

		void AttachRenderObjects(void);
		void _AttachRenderObject(  GPtr<Vegetation::VegetationObject>&  );

		void DeattachRenderObjects(void);
		void _DeattachRenderObject(  GPtr<Vegetation::VegetationObject>&  );

		bool  _LoadBrushRes(GPtr<Vegetation::VegetationObject>&);
		bool  _LoadBrushMaterials(GPtr<Vegetation::VegetationObject>&);

		void _CalculateBBox(Math::bbox& box, const GPtr<Vegetation::VegeInstanceMap>& instmap) ; 



	protected:
		Util::Array<Vegetation::VegetationObjectPtr> mRenderDates;
		bool mIsTrans;
		bool mVisible;
		bool mAttached;

#ifdef __GENESIS_EDITOR__
		bool m_bEditorVis;
#endif
	};


	//--------------------------------------------------------------------------------
	inline const GPtr<Vegetation::VegetationObject>& VegetationRenderComponent::GetVegetObject(IndexT index) const
	{
		static GPtr<Vegetation::VegetationObject> nullVegetationObject;
		if ( !(index >= 0 && index < mRenderDates.Size()) )
		{
			return nullVegetationObject;
		}

		return mRenderDates[index];
	}
	//--------------------------------------------------------------------------------
	inline GPtr<Vegetation::VegetationObject>& VegetationRenderComponent::GetVegetObject(IndexT index)
	{
		static GPtr<Vegetation::VegetationObject> nullVegetationObject;
		if ( !(index >= 0 && index < mRenderDates.Size()) )
		{
			return nullVegetationObject;
		}
		return mRenderDates[index];
	}
	//--------------------------------------------------------------------------------
	inline SizeT VegetationRenderComponent::GetCountOfObjectArray() const
	{
		return mRenderDates.Size();
	}
}
#endif //__VEGETATION_RENDER_COMPONENT_H__