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fbcode/vision/fair/pytorch3d/pytorch3d/ops/laplacian_matrices.py

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Reviewed By: bottler

Differential Revision: D93708383

fbshipit-source-id: 7576f0c9800ed3d28795e521be5c63799b7e6676
This commit is contained in:
generatedunixname1417043136753450
2026-02-22 06:57:57 -08:00
committed by meta-codesync[bot]
parent 42d66c1145
commit 3aadd19a2b
1 changed files with 3 additions and 6 deletions
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pytorch3d/ops/laplacian_matrices.py
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@@ -55,11 +55,9 @@ def laplacian(verts: torch.Tensor, edges: torch.Tensor) -> torch.Tensor:
# We construct the Laplacian matrix by adding the non diagonal values
# i.e. L[i, j] = 1 ./ deg(i) if (i, j) is an edge
deg0 = deg[e0]
# pyre-fixme[58]: `/` is not supported for operand types `float` and `Tensor`.
deg0 = torch.where(deg0 > 0.0, 1.0 / deg0, deg0)
deg0 = torch.where(deg0 > 0.0, torch.reciprocal(deg0), deg0)
deg1 = deg[e1]
# pyre-fixme[58]: `/` is not supported for operand types `float` and `Tensor`.
deg1 = torch.where(deg1 > 0.0, 1.0 / deg1, deg1)
deg1 = torch.where(deg1 > 0.0, torch.reciprocal(deg1), deg1)
val = torch.cat([deg0, deg1])
L = torch.sparse_coo_tensor(idx, val, (V, V), dtype=torch.float32)
@@ -137,8 +135,7 @@ def cot_laplacian(
val = torch.stack([area] * 3, dim=1).view(-1)
inv_areas.scatter_add_(0, idx, val)
idx = inv_areas > 0
# pyre-fixme[58]: `/` is not supported for operand types `float` and `Tensor`.
inv_areas[idx] = 1.0 / inv_areas[idx]
inv_areas[idx] = torch.reciprocal(inv_areas[idx])
inv_areas = inv_areas.view(-1, 1)
return L, inv_areas