Vector[2,3,4] divideScalar does not match documentation.

[kmaxaurora]

Describe the bug

The documentation states that divideScalar will set the vector to zero if the input is zero, but actually it gets set to NaN. Is documentation wrong or the code? I'd be happy to submit a PR either way. Thanks!

To Reproduce

Steps to reproduce the behavior:

1. Get three.js
2. Run the code below.

Code

const centroid = new Vector3(0, 0, 0);
centroid.divideScalar(0);

Live example

• jsfiddle-dev

Expected behavior

Either it does not generate NaN or the documentation is changed.

Platform:

• Same on all platforms
• Three.js version: [dev]

[kmaxaurora]

Related code: https://github.com/mrdoob/three.js/blob/master/src/math/Vector3.js

[kmaxaurora]

Related:
#11241
#9387

[WestLangley]

Also see the discussion in #11253

[Mugen87]

I suggest to remove Set[s]() vector to ( 0, 0, 0 ) if *s = 0*. from the docs.