数学图形(1.24)巴斯加线与蚶线

巴斯加线是一种大圈套小圈的图形

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vertices = 1000
r = 10.0
b = 3.0
t = from 0 to (2*PI)
p = -2*r*cos(t) + b
x = p*sin(t)
y = p*cos(t)

巴斯加线所组成的面:

vertices = D1:512 D2:100

u = from 0 to (2*PI) D1
v = from 0 to 20 D2

r = 5.0
p = -2*r*cos(u) + v;

x = p*sin(u)
y = p*cos(u)

 

蚶线(Limacon)与巴斯加线很相似,

vertices = 1000

r = 10.0
b = 3.0
t = from 0 to (2*PI)
p = r*(1 + b*sin(t))
x = p*sin(t)
y = p*cos(t)

vertices = D1:512 D2:100

u = from 0 to (2*PI) D1
v = from 0 to 10 D2

r = 5.0
p = r*(1+v*sin(u))

x = p*sin(u)
y = p*cos(u)