private static Point NearestToCenterPoint(Point p, Size s, Point c)
{
var angle = p.AngleWith(c);
var x = p.X + (s.Width / 2d) * Math.Cos(angle);
var y = p.Y + (s.Height / 2d) * -Math.Sign(angle);
return(new Point(x, y));
}
private static Point GetAttachPoint(Point s, Size size, Point t)
{
var angle = s.AngleWith(t);
var halfWidth = size.Width / 2d;
var halfHeight = size.Height / 2d;
var x = s.X + halfWidth * Math.Cos(angle);
var y = s.Y + halfHeight * -Math.Sin(angle);
return(new Point(x, y));
}