Float-Precision issues on extreme distances from 0,0

[WenXin20]

BlueMap Version: v1.3.1-forge

I am using:

• [x] mods (on the rendered world)
• [x] resourcepacks (in bluemaps config/resourcepack folder)

Description:

• Traveling to extreme distances causes map jerkiness and block disconnections. (based on chunks maybe?)

[Toys0125]

I also have this issue without any mods and using BlueMap Verison 1.3.1-spigot PM if you want a link

[Mark-225]

Kind of related (and copied from Discord):

Ok so there's two different "symptoms" that start happening at different distances:

• The tiles start "shaking" slightly when rotating or tilting the camera This starts very early at around 100k but only very slightly. At 200k-300k it is easily noticeable especially when zoomed in. At really high coordinates, tiles start flickering randomly.

• The camera starts "jumping" instead of moving smoothly Starts at around 500k and gets really bad at around 1m-2m.

(Tested with Firefox on Bluemap Spigot 1.3.1 with a mod that allows for an infinite repeating hires map)

[DuckyBlender]

I noticed this too :)

[Toys0125]

This is just a guess but I believe that the 3D engine for the WebGL is using floating-point so as we go further out the precision worsens. So my opinion is to use a local cord system based on the current position of the camera or find a BigInt implementation for WebGL.

[Toys0125]

Just wanted to show that it still has a similar issue with 1.4.2 at extreme distance. It no longer keeping the blocks uniform.