public moFeature Clone()
{
moGeometryTypeConstant sShapeType = _ShapeType;
moGeometry sGeometry = null;
moAttributes sAttributes = _Attributes.Clone();
if (_ShapeType == moGeometryTypeConstant.Point)
{
moPoint sPoint = (moPoint)_Geometry;
sGeometry = sPoint.Clone();
}
else if (_ShapeType == moGeometryTypeConstant.MultiPolyline)
{
moMultiPolyline sMultiPolyline = (moMultiPolyline)_Geometry;
sGeometry = sMultiPolyline.Clone();
}
else if (_ShapeType == moGeometryTypeConstant.MultiPolygon)
{
moMultiPolygon sMultiPolygon = (moMultiPolygon)_Geometry;
sGeometry = sMultiPolygon.Clone();
}
moFeature sFeature = new moFeature(sShapeType, sGeometry, sAttributes);
return(sFeature);
}
/// <summary>
/// 绘制所有选择要素
/// </summary>
/// <param name="g"></param>
/// <param name="extent"></param>
/// <param name="mapScale"></param>
/// <param name="dpm"></param>
/// <param name="mpu"></param>
/// <param name="symbol"></param>
internal void DrawSelectedFeatures(Graphics g, moRectangle extent, double mapScale, double dpm, double mpu, moSymbol symbol)
{
//判断是否位于绘制范围内，不是，则绘制
Int32 sFeatureCount = _SelectedFeatures.Count;
for (Int32 i = 0; i < sFeatureCount; i++)
{
moFeature sFeature = _SelectedFeatures.GetItem(i);
if (IsFeatureInExtent(sFeature, extent) == true)
{
moGeometry sGeometry = sFeature.Geometry;
moMapDrawingTools.DrawGeometry(g, extent, mapScale, dpm, mpu, sGeometry, symbol);
}
}
}
/// <summary>
/// 绘制所有要素
/// </summary>
/// <param name="g">绘图对象</param>
/// <param name="extent">绘制范围（地图坐标）</param>
/// <param name="mapScale">地图比例尺的倒数</param>
/// <param name="dpm">每米对应的点数</param>
/// <param name="mpu">地图坐标单位对应的米数</param>
internal void DrawFeatures(Graphics g, moRectangle extent, double mapScale, double dpm, double mpu)
{
//（1）为所有要素配置符号
SetFeatureSymbols();
//（2）判断是否位于绘制范围内，如是，则绘制
Int32 sFeatureCount = _Features.Count;
for (Int32 i = 0; i < sFeatureCount; i++)
{
moFeature sFeature = _Features.GetItem(i);
if (IsFeatureInExtent(sFeature, extent) == true)
{
moGeometry sGeometry = sFeature.Geometry;
moSymbol sSymbol = sFeature.Symbol;
moMapDrawingTools.DrawGeometry(g, extent, mapScale, dpm, mpu, sGeometry, sSymbol);
}
}
}
private moSymbol _Symbol; //配置的符号
#endregion
#region 构造函数
public moFeature(moGeometryTypeConstant shapeType, moGeometry geometry, moAttributes attributes)
{
_ShapeType = shapeType;
_Geometry = geometry;
_Attributes = attributes;
}
internal static void DrawGeometry(Graphics g, moRectangle extent, double mapScale, double dpm, double mpu, moGeometry geometry, moSymbol symbol)
{
if (extent == null)
{
return;
}
if (geometry == null)
{
return;
}
if (symbol == null)
{
return;
}
if (geometry.GetType() == typeof(moPoint))
{
moPoint sPoint = (moPoint)geometry;
DrawPoint(g, extent, mapScale, dpm, mpu, sPoint, symbol);
}
else if (geometry.GetType() == typeof(moMultiPolyline))
{
moMultiPolyline sMultiPolyline = (moMultiPolyline)geometry;
DrawMultiPolyline(g, extent, mapScale, dpm, mpu, sMultiPolyline, symbol);
}
else if (geometry.GetType() == typeof(moMultiPolygon))
{
moMultiPolygon sMultiPolygon = (moMultiPolygon)geometry;
DrawMultiPolygon(g, extent, mapScale, dpm, mpu, sMultiPolygon, symbol);
}
}
