How to make the lines of the Edgerender always the same thickness？

Questions
1

I want to make the lines of the Edgerender always the same thickness , instead of thcker when zoom closer. just act like gridMaterial line. What should I do?
https://playground.babylonjs.com/#TYAHX#201

2

Could be something like that - https://playground.babylonjs.com/#TYAHX#202
(when camera.raduis is less than 8 the edgesWidth = 2.0), for example; or you can make the proportion.

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