//清除所有图形元素
public void clearAllElement()
{
//清除地图引用
for (int i = 0; i < Count(); i++)
{
TileGfxElement element = (TileGfxElement)this[i];
MapsManager mapsManager = ((TileGfxManager)parent).mapsManager;
for (int j = 0; j < mapsManager.Count(); j++)
{
MapElement map = mapsManager[j];
map.deleteTileUsed(element);
}
}
Clear();
}