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Razaekel / noise-rs

Procedural noise generation library for Rust.
Apache License 2.0
850 stars 119 forks source link

Document minimum and maximum #222

Open Reconcyl opened 4 years ago

Reconcyl commented 4 years ago

Could the crate documentation be updated to specify what the exact bounds on noise output values are? Experimentally, two-dimensional OpenSimplex noise values appear to always lie in the range [-0.544, 0.544].

Related: #51

nic-hartley commented 4 years ago

This would be very helpful. Some quick experimentation suggests Perlin noise is nearly always between -0.5 and 0.5, but not quite actually always. If it was normalized to some standard range, like 0 to 1, this library would be much easier to use. If the limits were documented anywhere, even.

bsurmanski commented 2 years ago

From code comments, the range is supposed to be between -1 to 1 for most noises. I believe the current ranges are a bug. I fixed the perlin ranges here: https://github.com/Razaekel/noise-rs/pull/283

AideTechBot commented 1 year ago

I agree, the fact that all the noise functions seem to have random max/mins is kinda annoying.