//---------------------------------------------------------------------------

#ifndef VectorH
#define VectorH
//---------------------------------------------------------------------------
typedef enum
{
 GIS_POINT,  //表示點圖層
 GIS_LINE,   //表示線圖層
 GIS_POLYGON //表示面圖層
} PICTURE_TYPE;
//---------------------------------------------------------------------------
struct GISFILEHEADER
{
 PICTURE_TYPE giType;  //圖層類型
 double giMinX;        //圖層水平方向最小值
 double giMaxX;        //圖層水平方向最大值
 double giMinY;        //圖層垂直方向最小值
 double giMaxY;        //圖層垂直方向最大值
 int    nNumber;       //點、線、或面的個數
};
typedef GISFILEHEADER* LPGISFILEHEADER;
//---------------------------------------------------------------------------
struct GISRECT  //定義矩形
{
  float x1;
  float x2;
  float y1;
  float y2;
};
typedef GISRECT* LPGISRECT;
//---------------------------------------------------------------------------
struct GISPOINT  //定義點
{
 float x;
 float y;
};
typedef GISPOINT* LPGISPOINT;
//---------------------------------------------------------------------------
struct GISLINE   //定義線
{
public:
  float X1;
  float Y1;
  float X2;
  float Y2;
public:
  GISLINE(float x1,float y1,float x2,float y2)
  {
   X1=x1;
   Y1=y1;
   X2=x2;
   Y2=y2;
  }
  ~GISLINE(){}
};
typedef GISLINE* LPGISLINE;
//---------------------------------------------------------------------------
struct GISPOLYGON  //定義多邊形
{
  int id;              //該多邊形的標識號
  int numberPoint;     //該多邊形包含的點數
  GISRECT outRect;     //最小外包矩形
  TPen*   pPen;        //保存畫筆屬性
  TBrush* pBrush;      //保存畫刷屬性
  GISPOINT* point;     //組成多邊形的各點
};
typedef GISPOLYGON* LPGISPOLYGON;
//---------------------------------------------------------------------------
class TGisVectorLayer
{
public:
 TGisVectorLayer();
 ~TGisVectorLayer();
public:
  BOOL OpenIdrisFile(AnsiString FileName);//打開文件
  BOOL Save(AnsiString FileName);//保存文件
  void Draw(TCanvas* canvas,GISRECT SourceRect,TRect DestRect);
  void DrawAPolygon(LPGISPOLYGON polygon,GISRECT SourceRect,TRect DestRect);
  void SelectPolygon(TPoint SourcePoint);  //根據點選擇多邊形
  void DrawSelPlyWithBitmap(GISRECT SourceRect,TRect DestRect);
  void DrawSelectPolygon(GISRECT SourceRect,TRect DestRect);
  void SetBitmapBrush(AnsiString strBitmapFile);
  BOOL PointIsInPolygon(LPGISPOLYGON polygon,GISPOINT SourcePoint);
  GISPOINT TPointToGisPoint(TPoint SourcePoint);
  TPoint  GisPointToTPoint(GISPOINT SourcePoint);//將圖形坐標轉換成屏幕坐標
  TRect   GisRectToTRect(GISRECT SourceRect);    //將圖形坐標中的矩形轉變為屏幕坐標
public:
  GISFILEHEADER m_gisFileHeader;
  TList* m_lpPolygonList;
  TCanvas* m_canvas; //多邊形顯示的畫布
  int   m_nSelectID; //當前選擇的圖象對象的ID
private:
  float m_ratioX;
  float m_ratioY;
  TRect m_DrawRect;  //目標矩形
  GISRECT m_gisSourceRect; //源矩形
};
//---------------------------------------------------------------------------
#endif