public static void RotatePoints(PointF[] pnts, PointF origin, double degreeAngle)
{
for (int i = 0; i < (int)pnts.Length; i++)
{
pnts[i] = PointMath.RotatePoint(pnts[i], origin, degreeAngle);
}
}
public static PointF RotatePoint(PointF pnt, double degreeAngle)
{
PointF pointF = PointMath.RotatePoint(pnt, new PointF(0f, 0f), degreeAngle);
return(pointF);
}