AE中创建文本要素和气泡式要素

时间：2013-5-7 作者：悬浮的青春 分类： gis二次开发

//********创建文本元素***********

public void CreateTextElment(double x, double y)

{

ESRI.ArcGIS.Geometry.IPoint pPoint = new PointClass();

IMap pMap = axMapControl1.Map;

IActiveView pActiveView = pMap as IActiveView;

IGraphicsContainer pGraphicsContainer;

IElement pElement = new MarkerElementClass();

IElement pTElement = new TextElementClass();

pGraphicsContainer = (IGraphicsContainer)pActiveView;

pGraphicsContainer.DeleteAllElements();

pPoint.PutCoords(x, y);//创建点要素

pElement.Geometry = pPoint;

//pGraphicsContainer.AddElement(pElement, 1);

IFormattedTextSymbol pTextSymbol = new TextSymbolClass();//文本符号

IBalloonCallout pBalloonCallout = CreateBalloonCallout(x, y);//利用创建气泡的方法

IRgbColor pColor = new RgbColorClass();

pColor.Red = 200;

pColor.Green = 0;

pColor.Blue = 0;

pTextSymbol.Color = pColor;

ITextBackground pTextBackground;

pTextBackground = (ITextBackground)pBalloonCallout;

pTextSymbol.Background = pTextBackground;

((ITextElement)pTElement).Symbol = pTextSymbol;

IFeatureLayer pFeatureLyr = new FeatureLayerClass();

pFeatureLyr = (IFeatureLayer)pMap.get_Layer(0);//要查询的图层

pFeatureLyr.DisplayField = "NAME";//要展示的字段

pFeatureLyr.ShowTips = true;

//axMapControl1.ShowMapTips = true;

((ITextElement)pTElement).Text = pFeatureLyr.get_TipText(x, y, 0.0001);//文本的位置

pPoint.X = x + 0.00001;

pPoint.Y = y + 0.00001;

pTElement.Geometry = pPoint;

pGraphicsContainer.AddElement(pTElement, 1);//添加元素

pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);//刷新

}

//********CreateBalloonCallout**************//创建气泡的方法

public IBalloonCallout CreateBalloonCallout(double x, double y)

{

IRgbColor pRgbClr = new RgbColorClass();

pRgbClr.Red = 255;

pRgbClr.Blue = 255;

pRgbClr.Green = 255;

ISimpleFillSymbol pSmplFill = new SimpleFillSymbolClass();//填充符号

pSmplFill.Color = pRgbClr;

pSmplFill.Style = esriSimpleFillStyle.esriSFSSolid;

IBalloonCallout pBllnCallout = new BalloonCalloutClass();//气泡

pBllnCallout.Style = esriBalloonCalloutStyle.esriBCSRectangle;

pBllnCallout.Symbol = pSmplFill;

pBllnCallout.LeaderTolerance = 1;//容差

ESRI.ArcGIS.Geometry.IPoint pPoint = new ESRI.ArcGIS.Geometry.PointClass();

pPoint.X = x;

pPoint.Y = y;

pBllnCallout.AnchorPoint = pPoint;//锚点位置

return pBllnCallout;

}

经过以上。就可以简单实现气泡标识展示要素内容了

标签: arcgis二次开发

WRITTEN BY

悬浮的青春

熟悉openlayers,cesium,vue,typescript,JavaScript等。

WRITTEN BY

悬浮的青春

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