标签：style blog color io ar for sp div on
网上看到的代码,都是一个模样,经过不断调试,无意中效果就可以了.主要是在"鼠标拖动的时候",网上的代码的鹰眼效果,感觉坑爹死了,闪烁超级严重.主要原因是鼠标拖动的时候,进行时时更新.
我在"天地图"上,它实现的效果也是鼠标拖动放开后才更新.以下是我对网上的代码进行稍微的改动:
主视图:
#region 主视图事件.
//同步鹰眼视图和主视图.
private void map_main_OnMapReplaced(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent e) {
mapCtrl_view.ClearLayers();
for (int i = 0; i < mapCtrl_main.LayerCount; i++) mapCtrl_view.AddLayer(mapCtrl_main.get_Layer(i));
mapCtrl_view.Extent = mapCtrl_main.FullExtent;
mapCtrl_main.Refresh();
}
//画轮廓.
private void map_main_OnExtentUpdated(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnExtentUpdatedEvent e) {
DrawSymbol(sender, (ESRI.ArcGIS.Geometry.IEnvelope)e.newEnvelope);
}
#endregion
辅助方法:
1 /// <summary> 2 /// 返回颜色. 3 /// </summary> 4 /// <param name="rgb">rgb的值</param> 5 /// <param name="transparency">透明度[0,255](0为全透明)</param> 6 /// <returns>颜色对象.</returns> 7 ESRI.ArcGIS.Display.IRgbColor ColorPaint(int rgb, byte transparency) { 8 ESRI.ArcGIS.Display.IRgbColor rgbColor = new ESRI.ArcGIS.Display.RgbColorClass(); 9 rgbColor.RGB = rgb; 10 rgbColor.Transparency = transparency; 11 return rgbColor; 12 } 13 14 /// <summary> 15 /// 画轮廓. 16 /// </summary> 17 /// <param name="sender"></param> 18 /// <param name="e">根据IEnvelope对象画轮廓.</param> 19 void DrawSymbol(object sender, ESRI.ArcGIS.Geometry.IEnvelope e) { 20 ESRI.ArcGIS.Carto.IGraphicsContainer hawkGC = (ESRI.ArcGIS.Carto.IGraphicsContainer)mapCtrl_view.Map; 21 ESRI.ArcGIS.Carto.IActiveView aView = (ESRI.ArcGIS.Carto.IActiveView)hawkGC; 22 hawkGC.DeleteAllElements(); 23 24 ESRI.ArcGIS.Carto.IElement recEle = (ESRI.ArcGIS.Carto.IElement)new ESRI.ArcGIS.Carto.RectangleElementClass(); 25 recEle.Geometry = e; 26 ESRI.ArcGIS.Display.ISimpleLineSymbol outLine = new ESRI.ArcGIS.Display.SimpleLineSymbolClass(); 27 outLine.Color = ColorPaint(255, 255); 28 outLine.Width = 2; 29 30 //填充样式. 31 ESRI.ArcGIS.Display.ISimpleFillSymbol fillSym = new ESRI.ArcGIS.Display.SimpleFillSymbolClass(); 32 fillSym.Color = ColorPaint(255, 0); 33 fillSym.Outline = outLine; 34 35 ESRI.ArcGIS.Carto.IFillShapeElement fillShape = (ESRI.ArcGIS.Carto.IFillShapeElement)recEle; 36 fillShape.Symbol = fillSym; 37 hawkGC.AddElement((ESRI.ArcGIS.Carto.IElement)fillShape, 0); 38 aView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGraphics, null, null); 39 }
鹰眼视图:
1 #region 鹰眼事件. 2 private void map_view_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e) { 3 if (mapCtrl_main.LayerCount < 0) return; 4 if (e.button == 1) { //点选. 5 ESRI.ArcGIS.Geometry.IPoint ptNew = new ESRI.ArcGIS.Geometry.PointClass(); 6 ptNew.PutCoords(e.mapX, e.mapY); 7 } 8 else if (e.button == 2) //右键框选. 9 { 10 interEnvelope = mapCtrl_view.TrackRectangle(); 11 //记录感兴趣区. 12 mapCtrl_main.Extent = interEnvelope; 13 } 14 mapCtrl_main.ActiveView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGeography, null, null); 15 } 16 17 private void map_view_OnMouseMove(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseMoveEvent e) { 18 if (e.button == 1 && interEnvelope != null) { 19 //鼠标移动,轮廓跟着变,但是主视图不更新,直到鼠标放开. 20 interEnvelope.PutCoords(e.mapX - interEnvelope.Width / 2, e.mapY - interEnvelope.Height / 2, e.mapX + interEnvelope.Width / 2, e.mapY + interEnvelope.Height / 2); 21 DrawSymbol(sender, interEnvelope); 22 } 23 } 24 25 private void map_view_OnMouseUp(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseUpEvent e) { 26 //鼠标放开时同步更新主视图,和map_view_OnMouseMove搭配. 27 ESRI.ArcGIS.Geometry.IPoint ptNew = new ESRI.ArcGIS.Geometry.PointClass(); 28 ptNew.PutCoords(e.mapX, e.mapY); 29 mapCtrl_main.CenterAt(ptNew); 30 mapCtrl_main.ActiveView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGeography, null, null); 31 } 32 #endregion
标签：style blog color io ar for sp div on
原文地址：http://www.cnblogs.com/listened/p/4044855.html
