/// <summary>
/// 获取Element法向量为normal的一个面
/// </summary>
/// <param name="elem"></param>
/// <param name="normal"></param>
/// <returns></returns>
public static Face GetElementFaceByDirection(Element elem, XYZ normal)
{
var solid = GeometryUtils.GetSolid(elem);
return(GetFaceByNormal(solid, normal));
}
