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Fix small bug with null triangles

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This commit is contained in:
Grant Sanderson 2023-01-13 16:53:22 -08:00
parent 31cc2671e5
commit e832bb775f
1 changed files with 5 additions and 0 deletions
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5
manimlib/mobject/types/vectorized_mobject.py
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@ -1045,6 +1045,11 @@ class VMobject(Mobject):
inner_tri_indices = inner_vert_indices[
earclip_triangulation(inner_verts, rings)
]
# Remove null triangles, coming from adjascent points
iti = inner_tri_indices
null1 = (iti[0::3] + 1 == iti[1::3]) & (iti[0::3] + 2 == iti[2::3])
null2 = (iti[0::3] - 1 == iti[1::3]) & (iti[0::3] - 2 == iti[2::3])
inner_tri_indices = iti[~(null1 | null2).repeat(3)]
outer_tri_indices = self.get_outer_vert_indices()
tri_indices = np.hstack([outer_tri_indices, inner_tri_indices])