/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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THE SOFTWARE.
****************************************************************************/
#ifndef __animationclip_H__
#define __animationclip_H__

#include "animation/animationnode.h"
#include "resource/resource.h"

namespace Animations
{
	/*
	1¡¢An AnimationClip represent a animation section. e.g "walk","run"
	2¡¢An AnimationClip can has many AnimationNodes¡£That means this animation need control lots of nodes to compute
	*/

	struct AnimNodePair
	{
		AnimNodeID         name;
		GPtr<AnimationNode> pNode;
	};

	class AnimationClip: public Core::RefCounted
	{
		__DeclareClass(AnimationClip);
	public:
		enum WrapMode
		{
			ONCE     = 1,
			LOOP     = 2,
			PINGPONG = 4,
			ClAMP    = 8
		};


		AnimationClip();
		virtual ~AnimationClip();

		/// get name of this animation clip
		const Resources::ResourceId& GetName(void) const;

		/// !!!!!!! It's Dangerous.  Becare for Call this !!!!!!!!!!.    set name of this animation clip. name can not be empty
		void SetName(const Resources::ResourceId& name);

		/// get node count
		SizeT GetNodeCount(void);

		/// if node exist by id
		bool HasNode( const AnimNodeID& id ) const;

		/// get node by index. return null if invalid index
		const GPtr<AnimationNode>& GetNode(IndexT index) const;

		GPtr<AnimationNode>& GetNode(IndexT index);

		/// get node by id. return null if invalid id
		const GPtr<AnimationNode>& GetNode( const AnimNodeID& id ) const;

		/// get node index using hash table. return -1 if invalid id
		const int GetNodeIndex( const AnimNodeID& id ) const;

		/// add node. Failed if node is invalid.  
		/// if node'id is repeat and bReplace is false, will Failed.
		/// if node'id is repeat and bReplace is true, will replace the old node. 
		bool AddNode( const GPtr<AnimationNode>& node , bool bReplace = false );

		/// remove node by index. Note: after remove, other index may be invalid
		void RemoveNode(IndexT index);

		/// remove node by ID
		void RemoveNode(const AnimNodeID& id);

		/// Calculate Runtime Size
		virtual SizeT CalculateRuntimeSize() const;

		void   SetSampleRate(float rate);
		const float  GetSampleRate() const;

		float  GetStartTime();
		float  GetEndTime();
		const float  GetClipDuration() const;

		Math::float3     GetAnimNodeTrans(float time, int node);
		Math::float3     GetAnimNodeScale(float time, int node);
		Math::quaternion GetAnimNodeRotation(float time, int node);

		Math::float3     GetAnimNodeTrans(int key, int node);
		Math::float3     GetAnimNodeScale(int key, int node);
		Math::quaternion GetAnimNodeRotation(int key, int node);

		const Util::Array<ushort>& GetParentIndexVec() const;
		const Util::Array<Util::String>& GetParentNameVec()  const;

		bool IsChildOrSameAnimNode(const Util::String& rootName, const Util::String& curName);

		void Duplicate(const GPtr<AnimationClip>& clip);

		void SetAnimNodesMap(const Util::Dictionary< AnimNodeID , GPtr<AnimationNode> >& nodesMap);
		void SetAnimNodes(const Util::Array< AnimNodePair >& animNodes);
		void SetParenIndexVec(const Util::Array<ushort>& parent);
		void SetParentNameVec(const Util::Array<Util::String>& parent);
		void SetParentNameHashMap(const Util::HashTable<Util::String, IndexT>& parentHashMap);

	protected:
		Resources::ResourceId mName;	//	clip name
		Util::Dictionary< AnimNodeID , GPtr<AnimationNode> > mAnimNodesMap;
		Util::Array< AnimNodePair > mAnimNodes;


		float        m_ClipStartTime;
		float        m_ClipEndTime;
		float        m_ClipDuration;
		float        m_ClipSampleRate;


		Util::Array<ushort> m_ParentIndexVec;
		Util::Array<Util::String> m_ParentNameVec;
		Util::HashTable< Util::String, IndexT > m_ParentNameHashMap;

	public:
		static GPtr<AnimationClip> NullClip;
	};
	//------------------------------------------------------------------------
	inline
		const Resources::ResourceId& 
		AnimationClip::GetName(void) const
	{
		return mName;
	}
	//------------------------------------------------------------------------
	inline 
		SizeT 
		AnimationClip::GetNodeCount(void)
	{
		return mAnimNodes.Size();
	}
	//------------------------------------------------------------------------
	inline
		bool 
		AnimationClip::HasNode( const AnimNodeID& id ) const
	{
		IndexT index = m_ParentNameVec.FindIndex(id.AsString());

		if (index != InvalidIndex)
		{
			return true;
		}
		else
			return false;
	}


	inline const Util::Array<ushort>& AnimationClip::GetParentIndexVec() const
	{
		return m_ParentIndexVec;
	}

	//------------------------------------------------------------------------
	inline const Util::Array<Util::String>& AnimationClip::GetParentNameVec() const
	{
		return m_ParentNameVec;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetSampleRate(float rate)
	{
		m_ClipSampleRate = rate;
	}

	//------------------------------------------------------------------------
	inline const float AnimationClip::GetSampleRate() const
	{
		return m_ClipSampleRate;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetAnimNodesMap(const Util::Dictionary<AnimNodeID,GPtr<AnimationNode> > &nodesMap)
	{
		mAnimNodesMap = nodesMap;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetAnimNodes(const Util::Array<AnimNodePair> &animNodes)
	{
		mAnimNodes = animNodes;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetParenIndexVec(const Util::Array<ushort> &parent)
	{
		m_ParentIndexVec = parent;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetParentNameVec(const Util::Array<Util::String> &parent)
	{
		m_ParentNameVec = parent;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::SetParentNameHashMap(const Util::HashTable<Util::String, IndexT> &parentHashMap)
	{
		m_ParentNameHashMap = parentHashMap;
	}

	//------------------------------------------------------------------------
	inline void AnimationClip::Duplicate(const GPtr<AnimationClip>& clip)
	{
		clip->SetAnimNodesMap(mAnimNodesMap);
		clip->SetAnimNodes(mAnimNodes);
		clip->SetParenIndexVec(m_ParentIndexVec);
		clip->SetParentNameVec(m_ParentNameVec);
		clip->SetParentNameHashMap(m_ParentNameHashMap);
		clip->SetSampleRate(m_ClipSampleRate);
	}

	//------------------------------------------------------------------------
	inline const float AnimationClip::GetClipDuration() const
	{
		return m_ClipDuration;
	}


}

#endif // __animationclip_H__