How do you approximate an ellipse in Ikarus?

The thread about B-splines has led me to read about Ikarus.
There's something I don't understand:
If all segments are circle arcs, how do you approximate an ellipse, for example?

(I mean, just like it's possible to approximate an ellipse by a polygon, obviously it's possible to approximate an ellipse using circle arcs. You can even avoid cusps. But it would be very not smooth in the mathematical sense: it won't even have a second derivative. That sounds to me like a big problem. Or maybe it's not?)
Tagged:

Comments

  • James MontalbanoJames Montalbano Posts: 831
    edited May 13
    I always used IKARUS with a digitizing tablet, so I never had to "approximate" and ellipse. I just traced it. Placing on-curve points at 30° increments between extremes.
  • Ori Ben-DorOri Ben-Dor Posts: 165
    So you would construct each quarter of an ellipse from three segments, right?
  • I suppose you could describe it that way.
  • Ori Ben-DorOri Ben-Dor Posts: 165
    Thanks!
Sign In or Register to comment.