Arcgis engine画带箭头的线

最新推荐文章于 2024-09-22 11:31:25 发布

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本文介绍如何使用ArcGIS API创建一条带箭头装饰的轨迹线，并设置其颜色、宽度等属性，最后将该轨迹线元素添加到地图中。

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IGeometry pGeometry = axMapControl1.TrackLine();

            IRgbColor pColor = new RgbColorClass();
            pColor.Red = 255;

            ICartographicLineSymbol pCartoLineSymbol = new CartographicLineSymbolClass();
            pCartoLineSymbol.Cap = esriLineCapStyle.esriLCSRound;

            ILineProperties pLineProp = pCartoLineSymbol as ILineProperties;
            pLineProp.DecorationOnTop = true;

            ILineDecoration pLineDecoration = new LineDecorationClass();
            ISimpleLineDecorationElement pSimpleLineDecoElem = new SimpleLineDecorationElementClass();
            pSimpleLineDecoElem.AddPosition(1);
            IArrowMarkerSymbol pArrowMarkerSym = new ArrowMarkerSymbolClass();
            pArrowMarkerSym.Size = 16;
            pArrowMarkerSym.Color = pColor;
            pSimpleLineDecoElem.MarkerSymbol = pArrowMarkerSym as IMarkerSymbol;
            pLineDecoration.AddElement(pSimpleLineDecoElem as ILineDecorationElement);
            pLineProp.LineDecoration = pLineDecoration;

            ILineSymbol pLineSymbol = pCartoLineSymbol as ILineSymbol;

            pLineSymbol.Color = pColor;
            pLineSymbol.Width = 2;

            ILineElement pLineElem = new LineElementClass();
            pLineElem.Symbol = pLineSymbol;
            IElement pElem = pLineElem as IElement;
            pElem.Geometry = pGeometry;

            IGraphicsContainer pGraphicsContainer = axMapControl1.Map as IGraphicsContainer;
            pGraphicsContainer.AddElement(pElem, 0);

            axMapControl1.Refresh();