private void Draw(Trajectory t, PaintEventArgs e)
{
Curve c = new Curve();
c.AddRange(CRSpline.Create(t).Interpolate(t.Count * Quality));
c.Pencil = new Pen(t.Finished ? Brushes.OliveDrab : Brushes.MediumSlateBlue, 1);
DrawCurve(e.Graphics, c);
}
