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Update score:
- -1 if vertex has no triangles
- cache score + valence score otherwise
where cache score is
- 0 if vertex is not in cache
- 0.75 if vertex has been used very recently
(position 0, 1, or 2)
- (1 - (cache position - 3) / (32 - 3)) ** 1.5
otherwise
and valence score is 2 * (num triangles ** (-0.5))
>>> vertex_score = VertexScore()
>>> def get_score(cache_position, triangle_indices):
... vert = VertexInfo(cache_position=cache_position,
... triangle_indices=triangle_indices)
... vertex_score.update_score(vert)
... return vert.score
>>> for cache_position in [-1, 0, 1, 2, 3, 4, 5]:
... print("cache position = {0}".format(cache_position))
... for num_triangles in range(4):
... print(" num triangles = {0} : {1:.3f}"
... .format(num_triangles,
... get_score(cache_position,
... list(range(num_triangles)))))
cache position = -1
num triangles = 0 : -1.000
num triangles = 1 : 2.000
num triangles = 2 : 1.414
num triangles = 3 : 1.155
cache position = 0
num triangles = 0 : -1.000
num triangles = 1 : 2.750
num triangles = 2 : 2.164
num triangles = 3 : 1.905
cache position = 1
num triangles = 0 : -1.000
num triangles = 1 : 2.750
num triangles = 2 : 2.164
num triangles = 3 : 1.905
cache position = 2
num triangles = 0 : -1.000
num triangles = 1 : 2.750
num triangles = 2 : 2.164
num triangles = 3 : 1.905
cache position = 3
num triangles = 0 : -1.000
num triangles = 1 : 3.000
num triangles = 2 : 2.414
num triangles = 3 : 2.155
cache position = 4
num triangles = 0 : -1.000
num triangles = 1 : 2.949
num triangles = 2 : 2.363
num triangles = 3 : 2.103
cache position = 5
num triangles = 0 : -1.000
num triangles = 1 : 2.898
num triangles = 2 : 2.313
num triangles = 3 : 2.053
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