#ifndef _PropRespawnRegionExtractor_h_
#define _PropRespawnRegionExtractor_h_

#include "KTypes.h"
#include <map>
//#include <vector>

class cPropRespawnRegionExtractor
{
private:
	/*
		/// qpf 파일을 읽어서 갖고온 데이타들
	*/
	struct sPropData
	{
		sPropData() {}
		~sPropData()
		{
			m_itemList.clear();
			m_posList.clear();
		}
		sPropData(int propId, float x, float y)
		{
			m_propId = propId;
			addPos(x, y);
		}
		void addPos(float x, float y)
		{
			m_posList.push_back(KPoint((int)x, (int)y));
		}
		int m_propId;
		std::vector<int>	m_itemList;
		std::vector<KPoint> m_posList;
	};
	typedef map<int, sPropData>	map_prop;
	/*
	*/
	struct sItemData
	{
		sItemData() {}
		sItemData(int itemId, std::vector<KPoint> const& posList)
		{
			m_itemId = itemId;
			m_posList = posList;
		}
		~sItemData()
		{
			m_posList.clear();
		}
		void addPos(std::vector<KPoint> const& posList)
		{
			m_posList.insert(m_posList.end(), posList.begin(), posList.end());
		}

		int m_itemId;
		std::vector<KPoint> m_posList;
	};
	typedef map<int, sItemData> map_item;
	/*
	*/
	struct sItemGroupData
	{
		struct sGroup
		{
			~sGroup()	
			{	
				m_posList.clear();	
			}
			void addPos(KPoint const& pos)	
			{	
				m_posList.push_back(pos);	
			}
			void makeRect(int w, int h)
			{
				/// group의 중심을 구한다
				KPoint center(0, 0);
				std::vector<KPoint>::iterator it = m_posList.begin();
				for (; it != m_posList.end(); ++it)
				{
					center.x += it->x;
					center.y += it->y;
				}
				center.x /= (int)m_posList.size();
				center.y /= (int)m_posList.size();

				int hw = w >> 1;
				int hh = h >> 1;

				m_rect.left = center.x - hw;
				m_rect.top = center.y - hh;
				m_rect.right = center.x + hw;
				m_rect.bottom = center.y += hh;
			}

			std::vector<KPoint> m_posList;
			/// 최종 결과
			float m_theta;
			KRect m_rect;
		};

		~sItemGroupData()	{	m_groupList.clear();	}
		
		int m_itemId;
		std::vector<sGroup> m_groupList;
	};
	typedef map<int, sItemGroupData> map_itemGroup;
	/*
	*/
	struct sCorMatrix
	{
	private:
		struct sCenter
		{
			sCenter() {}
			sCenter(float x, float y)	{	v[0] = x;	v[1] = y;	}
			float v[2];
		};

	public:
		void make(std::vector<KPoint> const& posList)
		{
			// 중점
			std::vector<sCenter> centerList;
			makeCenter(posList, centerList);
			// 평균
			float ave[2];
			makeAverage(centerList, ave);

			float x_ij, x_ik;
			int n = centerList.size();
			float f_n = (float)n;
			for (int j = 0; j < 2; ++j)
			{
				for (int k = 0; k < 2; ++k)
				{
					float value = 0;
					for (int i = 0; i < n; ++i)
					{
						x_ij = centerList[i].v[j];
						x_ik = centerList[i].v[k];
						value += (x_ij - ave[j]) * (x_ik - ave[k]);
					}
					value /= f_n;
					v[j][k] = value;
				}
			}			

			centerList.clear();
		}

	private:
		void makeAverage(std::vector<sCenter> const& centerList, float* ave)
		{
			float _ave[2] = {0.0f, 0.0f};
			int n = centerList.size();
			for (int i = 0; i < n; ++i)
			{
				_ave[0] += centerList[i].v[0];
				_ave[1] += centerList[i].v[1];
			}

			_ave[0] /= (float)n;
			_ave[1] /= (float)n;

			ave[0] = _ave[0];
			ave[1] = _ave[1];
		};
		void makeCenter(std::vector<KPoint> const& pointList, std::vector<sCenter>& centerList)
		{
			std::vector<KPoint>::const_iterator it = pointList.begin();
			for (; it != pointList.end(); ++it)
			{
				centerList.push_back(sCenter((float)it->x, (float)it->y));
			}
		}

	public:
		float v[2][2];
	};

public:
	struct sItemRegionRect
	{
		KRect m_rect;
		float m_theta;
	};
	struct sItemRegion
	{
		typedef std::vector<sItemRegionRect>::iterator it_region;

		~sItemRegion()	{	m_regionList.clear();	}
		int m_itemId;
		std::vector<sItemRegionRect> m_regionList;
	};

public:
	cPropRespawnRegionExtractor();
	~cPropRespawnRegionExtractor();

	void extract();
	bool readData(char const* filename, std::map<int, sItemRegion>& itemRegionList);

private:
	bool getSeamlessWorldInfo();
	bool extractQpf(map_prop& propList);
	void grouping(map_itemGroup& itemGroupList, int groupLength);
	int getPointLength(KPoint const& p1, KPoint const& p2);
	void calcCovariance(map_itemGroup& itemGroupList);
	bool writeData(char const* filename, map_itemGroup const& itemGroupList);
	/// propList를 itemList로 바꿔준다
	void convertPropToItem(map_prop const& propList);
	/// propList에 있는 itemList의 정보를 채운다
	void setItemAtPropList(map_prop& propList);

private:
	int m_segmentCountPerMap;
	int m_tileCountPerSegment;
	int m_tileCountPerMap;
	float m_tileLength;
	map_item m_itemList;
};

#endif