How to create and visualize quadrics

import os, sys
sys.path.insert(0, os.path.abspath(".."))

import geoclide as gc

Disk, annulus and partial annulus

disk = gc.Disk(radius=1.)
disk.plot(color='green', edgecolor='k')
annulus = gc.Disk(radius=1., inner_radius=0.5)
annulus.plot(color='green', edgecolor='k')
partial_annulus = gc.Disk(radius=1., inner_radius=0.5, phi_max=270)
partial_annulus.plot(color='green', edgecolor='k')

Sphere and partial spheres

sphere = gc.Sphere(radius=1.)
sphere.plot(color='blue', edgecolor='k')
partial_sphere1 = gc.Sphere(radius=1., z_max=0.5)
partial_sphere1.plot(color='blue', edgecolor='k')
partial_sphere2 = gc.Sphere(radius=1., z_max=0.5, phi_max=180.)
partial_sphere2.plot(color='blue', edgecolor='k')

## Prolate and oblate spheroids

prolate = gc.Spheroid(radius_xy=1, radius_z=3)
prolate.plot(color='red', edgecolor='k')
oblate = gc.Spheroid(radius_xy=1, radius_z=0.8)
oblate.plot(color='cyan', edgecolor='k')