ArcEngine创建IElement简单例子

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, , 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, );
            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, );
            pActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, pGeometry.Envelope);
            return pElement;
        }
        else
        {
            return null;
        }
    }
    catch (Exception ex)
    {
        return null;
    }
}

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