/// <summary>
/// 创建几何图形对应的用于高亮显示的元素
/// </summary>
/// <param name="geometry"></param>
/// <returns></returns>
private static IElement CreateHightLightElement(IGeometry geometry)
{
IElement element = null;
IColor redcolor = ColorCreate.GetIColor(255, 0, 0, 50);
IColor bluecolor = ColorCreate.GetIColor(0, 0, 255);
switch (geometry.GeometryType)
{
case esriGeometryType.esriGeometryLine:
case esriGeometryType.esriGeometryPolyline:
element = new LineElementClass();
element.Geometry = geometry;
((ILineElement)element).Symbol = SymbolCreate.GetSimpleLineSymbol(redcolor);
break;
case esriGeometryType.esriGeometryPolygon:
element = new PolygonElementClass();
element.Geometry = geometry;
((PolygonElementClass)element).Symbol = SymbolCreate.GetSimpleFillSymbol(redcolor, bluecolor);
break;
case esriGeometryType.esriGeometryPoint:
element = new MarkerElementClass();
element.Geometry = geometry;
IMarkerSymbol pisymbol = new SimpleMarkerSymbolClass();
pisymbol.Color = (IColor)redcolor;
pisymbol.Size = 6;
((MarkerElementClass)element).Symbol = pisymbol;
break;
}
return(element);
}
/// <summary>
/// 地图缩放至指定图形并闪烁
/// </summary>
/// <param name="axMapControl">地图控件</param>
/// <param name="geometry">闪烁的图像</param>
/// <param name="nFlashes">闪烁次数</param>
public static void MapZoomToAndFlash(this AxMapControl axMapControl, IGeometry geometry, int nFlashes = 2)
{
MapZoomTo(axMapControl.ActiveView, geometry);
//地图闪烁
object symbol = null;
switch (geometry.GeometryType)
{
case esriGeometryType.esriGeometryPoint:
symbol = SymbolCreate.GetSimpleMarkerSymbol("ff0000");
break;
case esriGeometryType.esriGeometryLine:
case esriGeometryType.esriGeometryPolyline:
symbol = SymbolCreate.GetSimpleLineSymbol("ff0000");
break;
case esriGeometryType.esriGeometryPolygon:
symbol = SymbolCreate.GetSimpleFillSymbol("99ccff", "ff0000");
break;
}
if (symbol == null)
{
return;
}
axMapControl.FlashShape(geometry, nFlashes, 200, symbol);
}
private void MainMapControl_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e)//主地图：范围变化，鹰眼图跟随变化
{
//在绘制前，清除axMapControlEagleMap中的任何图形元素
var graphicsContainer = (IGraphicsContainer)EagleMapControl.Map;
graphicsContainer.DeleteAllElements();
//主地图地图范围变化时，鹰眼中的地图范围也跟随着变化
var rectangleElement = (IRectangleElement) new RectangleElement();
var element = (IElement)rectangleElement;
var envelope = (IEnvelope)e.newEnvelope; //得到主地图的新范围
element.Geometry = envelope;
//设置鹰眼中的红线框
var fillShapeElement = (IFillShapeElement)element;
fillShapeElement.Symbol = SymbolCreate.GetSimpleFillSymbol("ff000000", "ff0000", 1.6);
graphicsContainer.AddElement((IElement)fillShapeElement, 0);
//刷新
envelope.Expand(2, 2, true);
var activeView = (IActiveView)graphicsContainer;
activeView.Extent = envelope;
activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}
