Units in Babylon

Questions
1

Hi,

I understood that a unit in Babylon is just a unit. When I have a box with 1x1x1, it could be a 1cm cube or 1 meter cube or 1 km cube. Babylon never maps the unit with any physical scale.

But what about lighting?
Assume that I have a very big room with dimensions 1x1x1 (kilometers).

If I have a point light in the center of the room. The lighting on each wall should be very less or negligible as they are very far from light.

How Babylon knows the distance when it won’t map a unit with any scale?

2

https://doc.babylonjs.com/api/classes/babylon.pointlight#range

If your box side is 1 km then setting the range of the point light to 1 means it will reach 1km.