矢量数据编辑与管理

矢量数据编辑与1功能:

–1.交互式数据录入(鼠标)

–2.外部文件导入导出(Shape)

–3.利用PostGIS管理数据

–4.图形的基本显示功能(漫游、缩放)

–5.鼠标交互的地物选择(点选择、框选择)

–6.符号及属性管理开发语言：C++开发环境：VisualStudio20052PostGIS集成在PostgreSQL中，本次实习PostGIS管理数据（shapefile）,libpq/libpq++库提供了C++应用程序在PostgreSQL的后端接口，通过这些接口在PostGIS数据库中读取数据。3classCGeometry{public: GeometryTypem_geometryType;//几何图形类型 intm_LineType;//线型 intm_LineWidth;//线宽 intm_PenColor;//画笔颜色 intm_BrushType;//画刷类型 intm_BrushColor;//画刷颜色 boolm_bSelect;//是否处于选中状态 intm_layerIndex;//图层索引

EnumGeometryType{GeoNone,GeoPoint,GeoPolyline,GeoSimplePolygon,GeoMultiPoint,GeoMultiPolyline,GeoMultiPolygon };structDbPoint{doubleX;doubleY;};4public: CGeometry(constCGeometry&geometry);//复制构造函数 CGeometry(intlineType,intlineWidth,intpenColor,intBrushType,intBrushColor);//带参数的构造函数 GeometryTypegetType();//获得几何图形的类型

//以下函数都设为虚函数，需在不同类型几何图形类中重载 virtualvoidDraw(CDC*pDC);//绘制几何图形 virtualvoidMove(doublex,doubley);//平移（漫游） virtualvoidZoom(doublescale);//缩放

//以下函数用于图形选择实现 doubleCalDistance(DbPointpoint1,DbPointpoint2);//两点间的距离 doublePoint2Line(DbPointpt,DbPointpoint1,DbPointpoint2);//点到直线的距离 boolPointRgn(DbPointpt,vector<DbPoint>points,doubleblc);//判断点是否在区域内 virtualvoidGetRect(CRect&rect);//得到图形元素的边界矩形 virtualboolIsPoint(DbPointpt,doublelimit,doubleblc);//判断是否点选选择了图形元素 virtualboolIsInRgn(vector<DbPoint>points,doubleblc);//判断图形元素是否在多边形区域内};5classCGeoPoint:publicCGeometry{protected: DbPointm_point;public:

CGeoPoint(constCGeoPoint&point); CGeoPoint(intlineType,intlineWidth,intpenColor,intBrushType,intBrushColor,DbPointpoint);

doublegetX();

doublegetY(); DbPointgetPoint();

voidsetX(doublex);

voidsetY(doubley); voidsetPoint(DbPointpoint); virtualvoidDraw(CDC*pDC); virtualvoidMove(doublex,doubley); virtualvoidZoom(doublescale); virtualboolIsPoint(DbPointpt,doublelimit,doubleblc);//判断是否点选选择了图形元素 virtualboolIsInRgn(vector<DbPoint>points,doubleblc);//判断图形元素是否在多边形区域内};6classCGeoPolyLine:publicCGeometry{protected: vector<DbPoint>m_pointsArray;public:

CGeoPolyLine(constCGeoPolyLine&polyline); CGeoPolyLine(intlineType,intlineWidth,intpenColor,intBrushType,intBrushColor,vector<DbPoint>pointsArray); vector<DbPoint>getPoints(); voidsetPoints(vector<DbPoint>pointsArray); virtualvoidDraw(CDC*pDC); virtualvoidMove(doublex,doubley); virtualvoidZoom(doublescale); virtualvoidGetRect(CRect&rect);//得到图形元素的边界矩形 virtualboolIsPoint(DbPointpt,doublelimit,doubleblc);//判断是否点选选择了图形元素 virtualboolIsInRgn(vector<DbPoint>points,doubleblc);//判断图形元素是否在多边形区域内};7classCGeoSimplePolygon:publicCGeometry{protected: vector<DbPoint>m_pointsArray; doublem_Area;public:

CGeoSimplePolygon(constCGeoSimplePolygon&simplePolygon); CGeoSimplePolygon(intlineType,intlineWidth,intpenColor,intBrushType,intBrushColor,vector<DbPoint>pointsArray); vector<DbPoint>getPoints(); voidsetPoints(vector<DbPoint>pointsArray); doublegetArea(); voidCalArea(); virtualvoidDraw(CDC*pDC); virtualvoidMove(doublex,doubley); virtualvoidZoom(doublescale); virtualvoidGetRect(CRect&rect);//得到图形元素的边界矩形 virtualboolIsPoint(DbPointpt,doublelimit,doubleblc);//判断是否点选选择了图形元素 virtualboolIsInRgn(vector<DbPoint>points,doubleblc);//判断图形元素是否在多边形区域内};8classCGeoLayer{//属性private: GeometryTypem_layerType; CStringm_layerName; intm_layerIndex; boolm_isVisible; vector<CGeometry*>m_Geometrys;public://构造函数 CGeoLayer(constCGeoLayer&layer); CGeoLayer(GeometryTypelayerType,CStringlayerName,intlayerIndex,boolisVisible,vector<CGeometry*>geometrys);//基本方法 GeometryTypeGetLayerType(); voidSetLayerName(CStringname); CStringGetLayerName();

9public: voidSetLayerIndex(intindex); intGetLayerIndex(); voidSetVisible(boolisVisible); boolGetVisible(); voidAddGeometry(CGeomet