gui_geometrydata.h

linux下一款GIS程序源码

/*  gui_geometrydata.h  */
/*
    用来存储每个图层中几何图形的坐标等绘图信息
*/

#ifndef GUI_GEOMETRYDATA_H
#define GUI_GEOMETRYDATA_H

typedef enum
{
    GEO_NONE,
    GEO_POINT,
    GEO_LINE,
    //GEO_REGION,
}LayerGeoType;

typedef struct
{
    double x;
    double y;
}RawPoint;

typedef struct 
{
    int numPoint;
    RawPoint *Points;
}RawLine;

/**********************************************
	GUI_GeomegryData:
       几何图形基类
**********************************************/
class GUI_GeometryData
{
public: 
    GUI_GeometryData(){m_geoNum=0;}
    virtual ~GUI_GeometryData(){}
    
    virtual LayerGeoType getGeoType(){return GEO_NONE;}
    virtual int getGeoNum(){return m_geoNum;}
    virtual void setGeoNum(int num){m_geoNum=num;}
protected:
    int m_geoNum;
};

/******************************************************
    GUI_GeometryPoint: 
    保存几何图形为点(多个点)的Feature的坐标信息  
******************************************************/
class GUI_GeometryPoint: public GUI_GeometryData
{
public:
    GUI_GeometryPoint();
    virtual ~GUI_GeometryPoint();
      
    virtual LayerGeoType getGeoType(){return GEO_POINT;}
    virtual void setGeoNum(int num);
    void addPoint(int idx,double x, double y);
    RawPoint* getPoint(int idx);
private:   
    RawPoint *m_geoPoints;

};

/******************************************************
    GUI_GeometryLine: 
    保存几何图形为线(多线)的Feature的坐标信息  
******************************************************/
class GUI_GeometryLine: public GUI_GeometryData
{
public:
    GUI_GeometryLine();
    virtual ~GUI_GeometryLine();
    
    virtual LayerGeoType getGeoType(){return GEO_LINE;}
    virtual void setGeoNum(int num);
    void addLine(int idx, RawPoint *pts,int ptNum);
    RawLine *getLine(int idx);
private:
    RawLine *m_geoLines;
    
};

/******************************************************
     GUI_GeometryRegion:
     保存几何图形为区域的Feature的坐标信息
******************************************************/
/*    区域图形暂时也是只需存储边界线 用GUI_GeometryLine替代 
class GUI_GeometryRegion: public GUI_GeometryData
{
    
};
*/
#endif