1、先画一个贝壳：vertices = dimension1:160 dimension2:160u = from 0 to (6*霸烹钟爷PI) dimension1v = from 0 to (2*PI) dimension2k = 1.2a = 1.5w = (k^u) * (1+cos(v))x = w*cos(u)y = w*sin(u)z = (k^u)*sin(v) - (k^u)*a
3、用鼠标的右键可以全方位观察图形；具体怎么的控制方法，需要自己体验。
5、再换个模样的贝壳：vertices = dimension1:1000 dimension2:72u = from 0 to (20*PI) dimension1v = from 0 to (2*PI) dimension2m = -0.09k = 3a = 1b = 1e = pow(E, m*u)w = (a + b*cos(v))*ex = w*cos(u)z = w*sin(u)y = (k*a + b*sin(v))*e
7、蚌壳的模样：vertices = dimension1:36 dimension2:72a = from 0 to (1*PI) dimension1b = from (-PI*0.5) to (PI*0.5) dimension2r = 10.0x = r*cos(b)*sin(a)y = r*sin(b)*sqrt(a)z = r*cos(b)*cos(a)u = av = b*2
