Setting attributes.position to a rounded number

Questions
2

By far, not all numbers’ exact decimal value can be represented in IEEE-754 standard.

For example

const n = Math.round(50.67587*1000)/1000; console.log(n);
50.676

I guess JavaScript is showing you a string here, cut to a certain number of digits, that looks like a number.

The actual closest representation of 50.676 is:

ieee
ieee1336×488 25.1 KB

and so:

const f32 = new Float32Array(1); f32[0] = 50.676; console.log(f32[0])
50.67599868774414