/// <summary>
/// 创建图元
/// </summary>
/// <param name="kml">图元的kml</param>
/// <param name="layer">图元所在的图层</param>
/// <returns></returns>
public IMFElement CreateElement(Kml kml, ILayer layer)
{
KmlPolygon polygonKml = kml.Placemark.Graph as KmlPolygon;
if (polygonKml == null)
{
return(null);
}
if (polygonKml.PositionList == null)
{
return(null);
}
int index = -1;
Polygon_ArcGlobe polygonElement = null;
this.Dosomething((Action) delegate()
{
//图层
IGlobeGraphicsLayer graphicsLayer = layer as IGlobeGraphicsLayer;
//实例化图元
polygonElement = new Polygon_ArcGlobe(graphicsLayer, polygonKml);
//设置属性
GlobeGraphicsElementPropertiesClass properties = new GlobeGraphicsElementPropertiesClass();
properties.Rasterize = polygonKml.Rasterize;
graphicsLayer.AddElement(polygonElement, properties, out index);
polygonElement.Index = index; //指定索引
polygonElement.ElementName = kml.Placemark.Name;
}, true);
return(polygonElement);
}
/// <summary>
/// 移除图元
/// </summary>
/// <param name="element">要移除的图元对象</param>
/// <param name="layer">图元所在的图层</param>
/// <returns></returns>
public bool RemoveElement(IMFElement element, ILayer layer)
{
if (element == null)
{
return(true);
}
IGraphicsContainer graphicsLayer = layer as IGraphicsContainer;
if (graphicsLayer == null)
{
return(true);
}
Polygon_ArcGlobe polygonElement = element as Polygon_ArcGlobe;
if (polygonElement.Rasterize)
{
polygonElement.Rasterize = false;
}
graphicsLayer.DeleteElement(polygonElement);
return(true);
}
