public void InitData()
{
double rx = (double)(SEButton.GetLocation().X - NWButton.GetLocation().X) / (x1 - x0);
double ry = (double)(SEButton.GetLocation().Y - NWButton.GetLocation().Y) / (y1 - y0);
for (int i = 0; i < PointList.Count; i++)
{
Point t = (Point)PointList[i];
t.X = (int)(NWButton.GetLocation().X + (t.X - x0) * rx);
t.Y = (int)(NWButton.GetLocation().Y + (t.Y - y0) * ry);
PointList[i] = t;
}
}
