/// <summary>
/// 移除线图元
/// </summary>
/// <param name="element">要移除的线图元</param>
/// <param name="layer">图元所在的图层</param>
/// <returns></returns>
public bool RemoveElement(IMFElement element, ILayer layer)
{
GlobeGraphicsLayerClass graphicLayer = layer as GlobeGraphicsLayerClass;
if (graphicLayer == null)
{
return(false);
}
Line_ArcGlobe line = element as Line_ArcGlobe;
if (line == null)
{
return(false);
}
if (line.Rasterize) //判断图元是否栅格化,栅格化之后删不掉图元，所以要先不栅格化
{
line.Rasterize = false;
}
Dosomething((Action) delegate()
{
graphicLayer.DeleteElement(line);//删除线图元
}, true);
return(true);
}
/// <summary>
/// 创建线图元
/// </summary>
/// <param name="kml">线的kml</param>
/// <param name="layer">图元所在的图层</param>
/// <returns></returns>
public IMFElement CreateElement(Kml kml, ILayer layer)
{
KmlLineString lineKml = kml.Placemark.Graph as KmlLineString;
if (lineKml.PositionList == null || lineKml.PositionList.Count < 1)
{
return(null);
}
int index = -1;
//图层
IGlobeGraphicsLayer graphicLayer = layer as IGlobeGraphicsLayer;
if (graphicLayer == null)
{
return(null);
}
//图元
Line_ArcGlobe lineElement = null;
Dosomething((Action) delegate()
{
//属性
GlobeGraphicsElementPropertiesClass properties = new GlobeGraphicsElementPropertiesClass();
properties.Rasterize = lineKml.Rasterize;
//添加图元
lineElement = new Line_ArcGlobe(graphicLayer, lineKml);
graphicLayer.AddElement(lineElement, properties, out index);
lineElement.Index = index; //指定索引
lineElement.ElementName = kml.Placemark.Name;
}, true);
return(lineElement);
}
