/// <summary>
/// 根据矩形盒选择要素，矩形盒坐标位于投影坐标系
/// </summary>
/// <param name="box">矩形盒</param>
internal override List <int> SelectByBox(MyRectangle box)
{
List <int> selectedID = new List <int>();
for (int i = 0; i < polylines.Count; i++)
{
polylines[i].Selected = GeometryTools.IsPolylineCompleteInBox(polylines[i], box);
if (polylines[i].Selected == true)
{
selectedID.Add(i);
}
}
return(selectedID);
}
