private void button2_Click(object sender, EventArgs e)
{
List <Point> points = new List <Point>();
points.Add(new Point(2, 0));
points.Add(new Point(1, 3));//points.Add(new Point(2, 4));//变形了，结果又有不同
points.Add(new Point(2, 5));
points.Add(new Point(5, 1));
points.Add(new Point(0, 3));
Point center = new Point();
SortHelper.ClockwiseSortPoints(points, out center);
string outMsg = "";
foreach (Point pt in points)
{
outMsg += string.Format("[{0},{1}]\r\n", pt.X, pt.Y);
}
outMsg += string.Format("重心是：[{0},{1}]\r\n", center.X, center.Y);
MessageBox.Show(outMsg);
}
