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@zeffii
Created December 29, 2017 17:03
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polyhedra.py
def sv_main(polyIndex=0):
from math import sqrt
class PolyMesh():
def __init__(self, vertices, faces):
self.vertices = vertices
self.faces = faces
polyhedra = []
# Tetrahedron
polyhedra.append(PolyMesh(
[(1, 1, 1), (1, -1, -1), (-1, 1, -1), (-1, -1, 1)],
[[0, 3, 1], [0, 2, 3], [1, 3, 2], [0, 1, 2]]))
# Cube
polyhedra.append(PolyMesh(
[(i, j, k) for i in [1, -1] for j in [1, -1] for k in [1, -1]],
[[0, 2, 3, 1], [2, 6, 7, 3], [4, 5, 7, 6],
[0, 1, 5, 4], [0, 4, 6, 2], [1, 3, 7, 5]]))
# Octahedron
polyhedra.append(PolyMesh(
[(1, 0, 0), (-1, 0, 0), (0, 1, 0), (0, -1, 0), (0, 0, 1), (0, 0, -1)],
[[0, 3, 5], [0, 5, 2], [2, 5, 1], [1, 5, 3],
[0, 4, 3], [0, 2, 4], [1, 4, 2], [1, 3, 4]]))
# Dodecahedron
polyhedra.append(PolyMesh(
[k for row in
[[(0, i, j), (j, 0, i), (i, j, 0)]
for i in [(sqrt(5)-1)/2, -(sqrt(5)-1)/2]
for j in [(sqrt(5)+1)/2, -(sqrt(5)+1)/2]] for k in row] +
[(i, j, k) for i in [1, -1] for j in [1, -1] for k in [1, -1]],
[[0, 6, 14, 1, 12], [6, 0, 16, 4, 18], [6, 18, 11, 5, 14],
[0, 12, 2, 8, 16], [4, 16, 8, 17, 10], [12, 1, 7, 13, 2],
[18, 4, 10, 19, 11], [1, 14, 5, 15, 7], [2, 13, 3, 17, 8],
[5, 11, 19, 9, 15], [3, 9, 19, 10, 17], [3, 13, 7, 15, 9]]))
# Icosahedron
polyhedra.append(PolyMesh(
[k for row in [[(0, i, j), (j, 0, i), (i, j, 0)]
for i in [(sqrt(5)+1)/2, -(sqrt(5)+1)/2]
for j in [1, -1]] for k in row],
[[0, 1, 2], [0, 2, 3], [0, 3, 8], [0, 8, 4], [0, 4, 1],
[1, 4, 6], [1, 6, 5], [1, 5, 2], [2, 5, 7], [2, 7, 3],
[3, 7, 10], [3, 10, 8], [8, 10, 11], [8, 11, 4], [4, 11, 6],
[9, 5, 6], [9, 6, 11], [9, 11, 10], [9, 10, 7], [9, 7, 5]]))
in_sockets = [
['s', 'Polyhedra Index', polyIndex]]
poly = polyIndex % len(polyhedra)
vertices = polyhedra[poly].vertices
faces = polyhedra[poly].faces
out_sockets = [
['v', 'Verts', [vertices]],
['s', 'Faces', [faces]]]
return in_sockets, out_sockets
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