mappolygon.h

本程序是用VC++ 开发出的比较底层的GIS系统代码。对于希望从底层学GIS开发的很有帮助

/************************************************************
  文件名: MapPolygon.h
  
  作者:   钱军洪       Version : 1.0          Date: 2002/12/21
  
  类描述: 对多边形对象的管理
  
  邮件地址：[e-mail]
***********************************************************/

#ifndef _MAP_POLYGON_H_
#define _MAP_POLYGON_H_

#include "MapParts.h"

class CMapPolygon:public CObject {

	DECLARE_DYNAMIC(CMapPolygon)
public:	
	CMapPolygon();
	CMapPolygon(CMapPolygon& mappolygon );
	~CMapPolygon();

//Attributes
public:
   long GetCount();
   CMapRectangle GetExtent();
   void SetExtent(CMapRectangle& exent);
   CMapParts* GetParts(long lIndex);
   double GetArea();

//operation
public:
	void Add(CMapParts* pParts);
	void Set(long lIndex , CMapParts* pParts);
	void SetIndex(unsigned int uiIndex ) { m_uiIndex = uiIndex ; }; 
	unsigned int GetIndex() { return m_uiIndex; }; 
	void Remove(long lIndex);
	void Insert(long lndex , CMapParts* pParts);
    void Clear();
	BOOL IsPointIn(CMapPoint& pt );
protected:
	BOOL isIntersect(CMapPoint& p1 , CMapPoint& p2 , CMapPoint& p3 , CMapPoint& p4 );
private:
	unsigned int m_uiIndex;  //索引值
	CMapRectangle m_Extent;
	CArray<CMapParts*,CMapParts*> m_Polygon; //存储点集合对象

};

#endif //_MAP_POLYGON_H_