static public void createSlot(Point2d insPt, PlanarSketch ps, Vector2d dir, double a, double b)
{
dir.ScaleBy(a);
Point2d ep = insPt.Copy();
Point2d sp = insPt.Copy();
ep.TranslateBy(dir);
dir.ScaleBy(-1);
sp.TranslateBy(dir);
ps.AddStraightSlotByCenterToCenter(sp, ep, b);
}
private Point2d pts(double height, double width)
{
Point2d pt = m_TG.CreatePoint2d();
Point2d pt1 = pt.Copy();
pt1.X = height / 2; pt1.Y = width / 2;
return(pt1);
}