# \#line-system

**URL:** https://forum.babylonjs.com/tag/line-system/556.md

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## [Integer direction problem](https://forum.babylonjs.com/t/integer-direction-problem/60423)

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**Author:** [@RainerHeintzmann](https://forum.babylonjs.com/u/RainerHeintzmann)\
**Replies:** 10\
**Last updated:** [September 12, 2025, 4:17pm UTC](https://forum.babylonjs.com/t/integer-direction-problem/60423 "2025-09-12T16:17:53Z")

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There is a problem with meshes that are perfectly aligned. Somehow they appear black even though they have an emissive color. Here are two lines with one of them being tilted ever so slightly:

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## [Regression (v7.35.1 → v7.35.2): \`LineSystem\` and \`PointsCloudSystem\` not consistently rendering](https://forum.babylonjs.com/t/regression-v7-35-1-v7-35-2-linesystem-and-pointscloudsystem-not-consistently-rendering/57952)

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**Author:** [@regna](https://forum.babylonjs.com/u/regna)\
**Replies:** 6\
**Last updated:** [April 22, 2025, 4:53pm UTC](https://forum.babylonjs.com/t/regression-v7-35-1-v7-35-2-linesystem-and-pointscloudsystem-not-consistently-rendering/57952 "2025-04-22T16:53:29Z")

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Please see the videos linked below: v7.35.1 (Good) v7.35.2 (Bug) Link to commits between v7.35.1 and v7.35.2 Link to diff between v7.35.1 and v7.35.2 The code looks something like: ▶ Code It definitely has to do with…