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face areas backward

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Summary:
Added backward for mesh face areas & normals. Exposed it as a layer. Replaced the computation with the new op in Meshes and in Sample Points.

Current issue: Circular imports. I moved the import of the op in meshes inside the function scope.

Reviewed By: jcjohnson

Differential Revision: D19920082

fbshipit-source-id: d213226d5e1d19a0c8452f4d32771d07e8b91c0a
This commit is contained in:
Georgia Gkioxari
2020-02-20 11:10:04 -08:00
committed by Facebook Github Bot
parent 9ca5489107
commit a3baa367e3
11 changed files with 513 additions and 63 deletions
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tests/test_sample_points_from_meshes.py
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@@ -6,8 +6,7 @@ import unittest
from pathlib import Path
import torch
from pytorch3d import _C
from pytorch3d.ops.sample_points_from_meshes import sample_points_from_meshes
from pytorch3d.ops import sample_points_from_meshes
from pytorch3d.structures.meshes import Meshes
from pytorch3d.utils.ico_sphere import ico_sphere