[p5.js 2.0+ Bug Report]: Floats in strands shaders are always rounded to 4 decimals

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• WebGPU
• p5.strands
• Build process
• Unit testing
• Internationalization
• Friendly errors
• Other (specify if possible)

p5.js version

2.3.0

Web browser and version

All

Operating system

All

Steps to reproduce this

In strands_glslBackend.js, we do this when converting number literals into shader code:
https://github.com/processing/p5.js/blob/a5c9056fa2b3fb829a4e0187a9a9b1d7ad3700ab/src/webgl/strands_glslBackend.js#L273-L274

This means that if you include 0.00001 in your strands code, your shader code would be 0.0000. That seems like a problem. Is there any way we can do this in a more context-dependent way where we don't just add more decimals across the board for everything?

Start in src/webgl/strands_glslBackend.js at the number-literal conversion around lines 273–274, and reproduce the issue with a strands literal such as 0.00001. Trace how literals become shader code and check related coverage; done means small values retain usable precision without unnecessarily changing the formatting of other literals.