Alpha Shape and Alpha Hull

Se muestra el uso de Alpha Shape y Alpha Hull con diferentes valores de alpha.

from proximitygraphs import Alpha_Hull, Alpha_Shape, SetPoints

uniform_sphere = SetPoints.uniform_sphere(n=200, seed=0)

for a in [-5, -3, -0.6, 0.5, 0.8, 1]:
    H = Alpha_Hull(uniform_sphere, alpha=a, n_points_per_arc=50)
    H.draw(title=True, details=True, figsize=(3,3), v_size=5, e_size=1, v_color='red', e_color='blue', fontsize=10, v_alpha=0.4, e_alpha=0.2)

for a in [-5, -3, -0.6, 0.5, 0.8, 1]:
    H = Alpha_Shape(uniform_sphere, alpha=a)
    H.draw(title=True, details=True, figsize=(3,3), v_size=5, e_size=1, v_color='red', e_color='blue', fontsize=10, v_alpha=0.4, e_alpha=0.2)

normal = SetPoints.normal_dist(n=100_000, seed=0)

H = Alpha_Shape(normal, alpha=0.00001)

H.draw(title=True, details=True, figsize=(3,3), v_size=5, e_size=1, v_color='red', e_color='blue', v_alpha=0.1, e_alpha=1)

(<Figure size 300x300 with 1 Axes>,
 <Axes: title={'center': 'Alpha-Shape\nalpha=1e-05'}>)

H = Alpha_Shape(normal, alpha=-4)

H.draw(title=True, details=True, figsize=(3,3), v_size=5, e_size=1, v_color='red', e_color='blue', v_alpha=0.1, e_alpha=1)

(<Figure size 300x300 with 1 Axes>,
 <Axes: title={'center': 'Alpha-Shape\nalpha=-4'}>)