转自IT-GIS终结者原文ArcEngine创建IElement简单例子
代码下载地址:http://files.cnblogs.com/ogis/MapControlApplication2.rar
以下几个函数功能主要是向地图中添加IElement,一共四个函数:
GetColor,CreateSimpleLineSymbol,CreateSimpleFillSymbol,AddCreateElement
功能函数:AddCreateElement
调用例子:
ISymbol pSymbol = AEUtil.CreateSimpleFillSymbol(Color.Red, 100, esriSimpleFillStyle.esriSFSCross);
AEUtil.AddCreateElement(pFeature.ShapeCopy, m_MapControl.ActiveView, pSymbol, fucosKey);
通过red green blue 三色创建IRgbColor
public static IRgbColor GetColor(int r, int g, int b) { RgbColor color = new RgbColor(); color.Red = r; color.Green = g; color.Blue = b; return color; }
创建简单线Symbol
输入参数 color-颜色,width-宽度,style-线型,有七种线型可选
esriSLSSolid
esriSLSDash
esriSLSDot
esriSLSDashDot
esriSLSDashDotDot
esriSLSNull
esriSLSInsideFrame
public static ISymbol CreateSimpleLineSymbol(Color color, int width, esriSimpleLineStyle style) { ISimpleLineSymbol pSimpleLineSymbol; pSimpleLineSymbol = new SimpleLineSymbol(); pSimpleLineSymbol.Width = width; pSimpleLineSymbol.Color = GetColor(color.R, color.G, color.B); pSimpleLineSymbol.Style = style; return (ISymbol)pSimpleLineSymbol; }
创建面填充ISymbol对象.
fillColor-颜色,oLineWidth-外廓线宽,fillStyle-填充类型,有以下可选
esriSFSSolid esriSFSNull esriSFSHollow esriSFSHorizontal esriSFSVertical esriSFSForwardDiagonal esriSFSBackwardDiagonal esriSFSCross esriSFSDiagonalCross public static ISymbol CreateSimpleFillSymbol(Color fillColor, int oLineWidth, esriSimpleFillStyle fillStyle) { ISimpleFillSymbol pSimpleFillSymbol; pSimpleFillSymbol = new SimpleFillSymbol(); pSimpleFillSymbol.Style = fillStyle; pSimpleFillSymbol.Color = GetColor(fillColor.R, fillColor.G, fillColor.B); pSimpleFillSymbol.Outline = (ILineSymbol)CreateSimpleLineSymbol(fillColor, 1, esriSimpleLineStyle.esriSLSDash); return (ISymbol)pSimpleFillSymbol; } // 函数实现向地图中添加元素,pGeometry-元素形状,pActiveView-地图视图,pSymbol-符号,key-元素属性 public static IElement AddCreateElement(IGeometry pGeometry, IActiveView pActiveView, ISymbol pSymbol, string key) { try { IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer; IElement pElement = null; ILineElement pLineElement = null; IFillShapeElement pFillShapeElement = null; IMarkerElement pMarkerElement = null; ICircleElement pCircleElement = null; IElementProperties pElmentProperties = null; switch (pGeometry.GeometryType) { case esriGeometryType.esriGeometryEnvelope: { pElement = new RectangleElement(); pElement.Geometry = pGeometry; pFillShapeElement = (IFillShapeElement)pElement; pFillShapeElement.Symbol = (IFillSymbol)pSymbol; break; } case esriGeometryType.esriGeometryPolyline: { pElement = new LineElement(); pElement.Geometry = pGeometry; pLineElement = (ILineElement)pElement; pLineElement.Symbol = (ILineSymbol)pSymbol; break; } case esriGeometryType.esriGeometryLine: { pElement = new LineElement(); pElement.Geometry = pGeometry; pLineElement = (ILineElement)pElement; pLineElement.Symbol = (ILineSymbol)pSymbol; break; } case esriGeometryType.esriGeometryPolygon: { pElement = new PolygonElement(); pElement.Geometry = pGeometry; pFillShapeElement = (IFillShapeElement)pElement; pFillShapeElement.Symbol = (IFillSymbol)pSymbol; break; } case esriGeometryType.esriGeometryMultipoint: case esriGeometryType.esriGeometryPoint: { pElement = new MarkerElement(); pElement.Geometry = pGeometry; pMarkerElement = (IMarkerElement)pElement; pMarkerElement.Symbol = (IMarkerSymbol)pSymbol; break; } case esriGeometryType.esriGeometryCircularArc: { pElement = new CircleElementClass(); pElement.Geometry = pGeometry; pCircleElement = (ICircleElement)pElement; break; } default: pElement = null; break; } if (pElement != null) { pElmentProperties = pElement as IElementProperties; pElmentProperties.Name = key; pGraphicsContainer.AddElement(pElement, 0); pActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, pGeometry.Envelope); return pElement; } else { return null; } } catch (Exception ex) { return null; } }
esriSFSSolid
esriSFSNull
esriSFSHollow
esriSFSHorizontal
esriSFSVertical
esriSFSForwardDiagonal
esriSFSBackwardDiagonal
esriSFSCross
esriSFSDiagonalCross
public static ISymbol CreateSimpleFillSymbol(Color fillColor, int oLineWidth, esriSimpleFillStyle fillStyle)
{
ISimpleFillSymbol pSimpleFillSymbol;
pSimpleFillSymbol = new SimpleFillSymbol();
pSimpleFillSymbol.Style = fillStyle;
pSimpleFillSymbol.Color = GetColor(fillColor.R, fillColor.G, fillColor.B);
pSimpleFillSymbol.Outline = (ILineSymbol)CreateSimpleLineSymbol(fillColor, 1, esriSimpleLineStyle.esriSLSDash);
return (ISymbol)pSimpleFillSymbol;
}
函数实现向地图中添加元素,pGeometry-元素形状,pActiveView-地图视图,pSymbol-符号,key-元素属性
public static IRgbColor GetColor(int r, int g, int b) { RgbColor color = new RgbColor(); color.Red = r; color.Green = g; color.Blue = b; return color; } public static IElement AddCreateElement(IGeometry pGeometry, IActiveView pActiveView, ISymbol pSymbol, string key) { try { IGraphicsContainer pGraphicsContainer = pActiveView.GraphicsContainer; IElement pElement = null; ILineElement pLineElement = null; IFillShapeElement pFillShapeElement = null; IMarkerElement pMarkerElement = null; ICircleElement pCircleElement = null; IElementProperties pElmentProperties = null; switch (pGeometry.GeometryType) { case esriGeometryType.esriGeometryEnvelope: { pElement = new RectangleElement(); pElement.Geometry = pGeometry; pFillShapeElement = (IFillShapeElement)pElement; pFillShapeElement.Symbol = (IFillSymbol)pSymbol; break; } case esriGeometryType.esriGeometryPolyline: { pElement = new LineElement(); pElement.Geometry = pGeometry; pLineElement = (ILineElement)pElement; pLineElement.Symbol = (ILineSymbol)pSymbol; break; } case esriGeometryType.esriGeometryLine: { pElement = new LineElement(); pElement.Geometry = pGeometry; pLineElement = (ILineElement)pElement; pLineElement.Symbol = (ILineSymbol)pSymbol; break; } case esriGeometryType.esriGeometryPolygon: { pElement = new PolygonElement(); pElement.Geometry = pGeometry; pFillShapeElement = (IFillShapeElement)pElement; pFillShapeElement.Symbol = (IFillSymbol)pSymbol; break; } case esriGeometryType.esriGeometryMultipoint: case esriGeometryType.esriGeometryPoint: { pElement = new MarkerElement(); pElement.Geometry = pGeometry; pMarkerElement = (IMarkerElement)pElement; pMarkerElement.Symbol = (IMarkerSymbol)pSymbol; break; } case esriGeometryType.esriGeometryCircularArc: { pElement = new CircleElementClass(); pElement.Geometry = pGeometry; pCircleElement = (ICircleElement)pElement; break; } default: pElement = null; break; } if (pElement != null) { pElmentProperties = pElement as IElementProperties; pElmentProperties.Name = key; pGraphicsContainer.AddElement(pElement, 0); pActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, pGeometry.Envelope); return pElement; } else { return null; } } catch (Exception ex) { return null; } }
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本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/6262724.html
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