private void QuantizeSegmentOrientations()
{
// Find the optimal rotation angle, to minimize segments' orientation from 0/30/45/60.
Point center = Geometry.EstimatePolygonCentroid(idealverts);
QsoImpl fi = new QsoImpl(idealverts,center);
GoldenSectionDescender.F f = new GoldenSectionDescender.F(fi.F);
GoldenSectionDescender gsd = new GoldenSectionDescender(f);
double tolerance = 0.01;
double optangle = gsd.FindMinimumWithin(-12.0,+12.0,tolerance);
// Now rotate them!
using (Matrix m = new Matrix())
{
m.RotateAt((float)optangle, new PointF(center.X,center.Y));
m.TransformPoints(idealverts);
}
}