# Get plane face normal

**URL:** <https://discourse.threejs.org/t/get-plane-face-normal/57756>\
**Category:** Questions\
**Tags:** math, geometry\
**Created:** [November 4, 2023, 11:26am UTC](https://discourse.threejs.org/t/get-plane-face-normal/57756 "2023-11-04T11:26:40Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Tibi](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/tibi/32/61300_2.png) [@Tibi](https://discourse.threejs.org/u/Tibi)\
**Post date:** [November 5, 2023, 7:49am UTC](https://discourse.threejs.org/t/get-plane-face-normal/57756/5 "2023-11-05T07:49:42Z")

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Guys maybe you can help me solve this one… because this is why I wanted the plane orientation/normals…

> [@Set plane orientation](https://discourse.threejs.org/t/set-plane-orientation/57768/2):
>
> There are 3 methods you should familiarize yourself with… object.attach( object ) object.worldToLocal( point ) object.localToWorld( point ) .attach works differently than .add. It tries to keep the visual representation of the object the same, while changing its parent. So in your case with having the correct result on the skin, and then wanting to put that result in the bone space… You may be able to just bone.attach( helperPlane ) after you set up the helperplane in the scene first like y…

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