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Basic Geometric Shapes

Plane

\begin{array}{l} x=1.5 u - 1 v + 1\\ y= u + v + 0.5\\ z= u +v + 1\\ \end{array}
-1.5\leq u \leq 1.5
-1.5\leq v \leq 1.5

Cylinder

\begin{array}{l} x=r\cos u\\ y=r\sin u\\ z=h\\ \end{array}
0\leq u \leq 2\pi
0\leq h \leq a,\,a\in \mathbb R

Sphere

\begin{array}{l} x = r\cos u \sin v\\ y = r\sin u \sin v\\ z = r\cos v\\ \end{array}
0\leq u \leq 2\pi
0\leq v \leq \pi

Torus

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x=\cos u \left(\frac{r}{2} \cos v + R\right)
y=\sin u \left(\frac{r}{2} \cos v + R\right)
z = \frac{r}{2}\sin v
r\gt 0 ,\, R\gt0

Nature

Seashell

\begin{array}{l} x = 2\left[ \exp\left(\displaystyle \frac{u}{6\pi}\right)-1\right]\cos u \cos^2 \left(\displaystyle \frac{1}{2}v\right)\\\\ y = 2\left[1-\exp\left(\displaystyle \frac{u}{6\pi}\right)\right]\sin u \cos^2 \left(\displaystyle \frac{1}{2}v\right)\\\\ z = 1 - \exp\left(\displaystyle \frac{u}{a}\right) - \sin v + \exp\left( \displaystyle \frac{u}{6\pi}\right)\sin v \\ \end{array}
0\leq u \leq 20
0\leq v \leq \pi

Apple

0\leq u \leq 2\pi
-\pi\leq v \leq \pi
x=\cos u \left(4+3.8 \cos v\right)
y=\sin u \left(4+3.8 \cos v\right)
z = \left( \cos v +\sin v -1 \right) \left( 1+ \sin v \right)\ln\left(1 - \pi v /10\right) + 7.5 \sin v

Horn

0\leq u \leq 1
-\pi\leq v \leq \pi
x=(a + u \cos v) \sin(b \,\pi\, u)
y=(a + u \cos v) \cos(b\, \pi\, u)+ c\, u
z = u \sin v
a,b,c\in \mathbb R

Heart

0\leq u \leq 2\pi
0\leq v \leq \pi
x= \big[4 \sin u - \sin(3 u)\big] \sin v
y= 2 \cos v
z = 1.2 \left(4 \cos u - \cos(2 u) - \frac{\cos(3 u)}{2} \right) \sin v

Snails & Mussels

u_{\text{min}}\leq u \leq u_{\text{max}}
0\leq v \leq 2\pi
x= (h + a \cos v) \exp(w \, u) \cos(c \, u)
y= (h + a \cos v) \exp(w \, u) \sin(c \, u)
z = (k + b \sin v) \exp(w \, u)
0\lt a,b,c\in \mathbb R; h,k,w\in \mathbb R

Egg

0\leq u \leq a
0\leq v \leq 2 \pi
x= c \sqrt{u (u - a) (u - b)} \sin v
y= u
z = c \sqrt{u (u - a) (u - b)} \cos v
0\lt a,b,c\in \mathbb R; a\lt b

Rose

s = \sin \left(\dfrac{\pi}{2} \exp\left(-\dfrac{v}{8\pi}\right)\right)
\alpha = 1 - \dfrac{1}{2}\left[\frac{5}{4}\left( 1-\dfrac{\text{Mod}\left(3.6 v, 2\pi \right) }{\pi}\right)^2 - \dfrac{1}{4}\right]^2
\beta = 1.95653 u^2 \left(1.27689 u -1\right)^2
r = \left(u + \beta\, c\right)s
x = r \,\alpha\,\sin v
y = r \,\alpha \,\cos v
z = u \, c - \beta s^2
0\leq u \leq 1
0\leq v \leq 17 \pi
c = \cos \left(\dfrac{\pi}{2} \exp\left(-\dfrac{v}{8\pi}\right)\right)

Hyperbolic surfaces

Hyperbolic spiral

0\leq u \leq 25
0\leq v \leq 1
x=\frac{\cos u}{u}
y=H v
z = \frac{\sin u }{u}

Hyperbolic helicoid

-4\leq u \leq 4
-4\leq v \leq 4
x= \dfrac{\sinh v}{1+\cosh u \cosh v}\cos(a \,u)
y= \dfrac{\sinh v}{1+\cosh u \cosh v}\sin(a \,u)
z = \dfrac{\sinh(u)\cosh v}{1+\cosh u \cosh v}

Hyperbolic octahedron

-\frac{\pi}{2}\leq u \leq \frac{\pi}{2}
-\pi \leq v \leq \pi
x=(\cos u \cos v)^3
y=(\sin u \cos v)^3
z = \sin^3 v

Surfaces named

after mathematicians

Möbius band

-1\leq u \leq 1
0\leq v \leq 2\pi
x= \left[R +u \cos\left(\frac{v}{2}\right)\right]\cos v
y= \left[R +u \cos\left(\frac{v}{2}\right)\right]\sin v
z = u \sin \left(\frac{v}{2}\right)
R\gt0

Klein bottle

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x = \left\{\begin{array}{l} \text{If\;\;} 0\leq u \lt \pi: \\ \;\; a \cos u \left(1+ \sin u\right) + r \cos u \cos v \\ \text{If\;\;} \pi\leq u \leq 2\pi: \\ \;\; a \cos u \left(1+ \sin u\right) + r \cos (v+\pi) \end{array} \right.
y = \left\{\begin{array}{l} \text{If\;\;}0\leq u \lt \pi:\\ \;\;b \sin u + r \sin u \cos v\\ \text{If\;\;}\pi\leq u \leq 2\pi:\\ \;\;b \sin u \end{array} \right.
z = r \sin v
r = 3 \left(1- \frac{\cos u}{2}\right)

Klein bottle

0\leq u \leq 4\pi
0\leq v \leq 2\pi
x= \cos u \left[\cos(u / 2) \left(\sqrt{2} + \cos v \right) + \sin(u / 2) \sin v \cos v\right]
y=\sin u \left[\cos(u / 2) \left(\sqrt{2} + \cos v\right) + \sin(u / 2) \sin v \cos v\right]
z = - \sin(u / 2) \left[ \sqrt{2} + \cos v + \cos(u / 2) \sin v \cos v)\right]

Nordstrand

Lawson bottle

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x=\frac{\sin u \sin v - \sin (u/2) \cos v}{\sqrt{2}(1+w)}
y=\frac{\cos u \sin v}{1+w}
z = \frac{\cos(u/2)\cos v}{1+w}
w=\frac{\sin u \sin v + \sin (u/2) \cos v}{\sqrt{2}}

Dini's surface

0\leq u \leq 4\pi
0.01\leq v \leq 2
x=a \cos u \sin v
y=a \sin u \sin v
z = a\left[ \cos v + \ln\left(\tan\left(\frac{v}{2}\right) \right)\right]+ b\, u

Enneper's surface

-2\leq u \leq 2
-2\leq v \leq 2
x=u -\frac{u^3}{3} + uv^2
y= v - \frac{v^3}{3} + u^2v
z = u^2 - v^2

Dupin cyclide

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x=\frac{d ( c-a \cos u \cos v) + b^2 \cos u}{h}
y= \frac{b \sin u (a-d \cos v)}{h}
z = \frac{b \sin v (c \cos u -d)}{h}
h = a - c\cos u \cos v

Maeder's owl

0\leq u \leq 4\pi
0.01\leq v \leq 1
x=v\cos u -\frac{1}{2}v^2 \cos(2u)
y=- v\sin u -\frac{1}{2}v^2 \cos(2u)
z = \frac{4}{3} r^{3/2}\cos(3u/2)

Bernat's surface

0\leq u \leq 1.2
0\leq v \leq 2\pi
x=u \cdot f_x + q\cdot g_x
y=u \cdot f_y + q\cdot g_y
z = u \cdot f_z + q\cdot g_z
f_x = 4.503 \cos v
f_y = 3.266 \sin v
f_z = 0
g_x = s \cdot 3.006 \cos v
g_x = s \cdot 2.266 \sin v
g_z = - s\cdot 3.006 \cos v
q=0.251u^{3}+0.389u^{2}-1.64u+1

Torii

8 Figure

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x= \cos u\big[c + \sin v \cos u - \sin (2v) \sin v / 2 \big]
y= \sin u \sin v + \cos u \sin (2v)/2
z =\sin u\big[c + \sin v \cos u - \sin (2v) \sin v / 2 \big]
0\lt c\in \mathbb R

Torus

Torus

Antisymmetric

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x= \big[R + r \cos v (a + \sin u)\big]\cos u
y= \big[R + r \cos v (a + \sin u)\big]\sin u
z =r \sin v\big[a + \sin u \big]
0\lt a\in \mathbb R

Torus

Braided

0\leq u \leq 8\pi
0\leq v \leq 2\pi
x= r\cos v \cos u + R \cos u \big[1+ a \cos ( n\,u)\big]
y= 2.5 \big[r \sin v + a \sin (n\, u) \big]
z =r\cos v \sin u + R \sin u \big[1+ a \cos ( n\,u)\big]
a\in \mathbb R

Torus

Twisted Eight

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x= \big[ R + r \left(\cos (u/2) \sin v - \sin(u/2) \sin (2v)\right) \big]\cos u
y= \big[ R + r \left(\cos (u/2) \sin v - \sin(u/2) \sin (2v)\right) \big]\sin u
z =r \big[\sin (u/2) \sin v + \cos (u/2 ) \sin 2v\big]

Torus

Twisted

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x= \big[4 + R \cos(t \, u + v)\big] \cos u
y= \big[4 + R \cos(t \, u + v)\big] \sin u
z = R \sin(t \, u + v);

Torus

R = \left(\cos^n v + \sin ^n v\right)^{-1/n}
2\lt n\in\mathbb Z^+ \text{\;even;}\; t\in \mathbb Z^+

Umbilic

0\leq u \leq 2\pi
0\leq v \leq 2\pi
x= \sin u \big[7 + \cos ( u/3 - 2v) + 2 \cos (u/3+v)\big]
y= \cos u \big[7 + \cos ( u/3 - 2v) + 2 \cos (u/3+v)\big]
z = \sin (u/3 - 2v) + 2 \sin (u/3 + v)

Torus

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References

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Special thanks!

Edward Huff, Abei, pmbem, Sophia Wood, Adam Parrott, Doug Kuhlman, bleh, Miguel Díaz, Ruan Ramon, Maciej Lasota, Christopher-Alexander Hermanns, Aarón Reyes, Gabriela Sofia Marin Sánchez, Jerome Siegler, Yashar Shoraka, Jeff Butterworth, Shaun MacMillan, Scott Pedersen, Elias Sanchez Angarano, emanuel silva.

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