Algorithme

choose c1 choose c2 choose c3 choose rho = 1 choose x0, y0 x = x0 y = y0 for i = 1 TO max plot (x,y) temp = c1 - c3 / (1 + x * x + y * y) sintemp = SIN(temp) costemp = COS(temp) xt = rho + c2 * (x * costemp - y * sintemp) y = c2 * (x * sintemp + y * costemp) x = xt NEXT