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Lightmap unwrap improvements - prevent division by zero #113716

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Sebastian Witt wants to merge 1 commits from SebastianWitt/blender:Ligthmap_zero_div into main
pull from: SebastianWitt/blender:Ligthmap_zero_div
merge into: blender:main

When changing the target branch, be careful to rebase the branch in your fork to match. See documentation.
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1 changed files with 4 additions and 2 deletions
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6
scripts/startup/bl_operators/uvcalc_lightmap.py
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@ -114,8 +114,10 @@ class prettyface:
# ngons work different, we store projected result
# in UVs to avoid having to re-project later.
for i, co in enumerate(cos_2d):
self.uv[i][:] = ((co.x - xmin) / xspan,
(co.y - ymin) / yspan)
if xspan < 0.0000001 or yspan < 0.0000001:
Sebastian Witt commented 2023-10-14 11:50:00 +02:00
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Is there a standard "epsilon" value to use instead?

Is there a standard "epsilon" value to use instead?
Campbell Barton commented 2024-01-11 00:06:01 +01:00
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There is sys.float_info.epsilon but it's ~2.2e-16 and often too small to be useful.

There is `sys.float_info.epsilon` but it's ~`2.2e-16` and often too small to be useful.
self.uv[i][:] = (0, 0)
else:
self.uv[i][:] = ((co.x - xmin) / xspan, (co.y - ymin) / yspan)
self.children = []