该曲线与上一节的herical cycloid球面外摆曲线 很相似,难道这是球面内摆曲线?
#http://www.mathcurve.com/courbes3d/cycloidspheric/trochoidspheric.shtml vertices = 12000 t = from 0 to (80*PI) a = rand2(0.1, 10) b = rand2(0.1, 10) d = rand2(0.1, 10) q = rand2(0.5, 10) w = rand2(PI*0.1, PI*0.9) s = sin(w) c = cos(w) x = (a - b*c + d*c*cos(q*t))*cos(t) + d*sin(t)*sin(q*t) z = (a - b*c + d*c*cos(q*t))*sin(t) - d*cos(t)*sin(q*t) y = s*(b - d*cos(q*t))
