noise: Add 3D Perlin Noise to noise module

[ulises-jeremias]

Describe the feature

Add a 3D perlin noise implementation to vsl.noise

Use Case

Perlin noise is a procedural texture primitive, a type of gradient noise used by visual effects artists to increase the appearance of realism in computer graphics. The function has a pseudo-random appearance, yet all of its visual details are the same size.

We already have a 2D implementation of the Perlin Noise, so the scope of this is to have a new 3D implementation as well

Proposed Solution

• Rename existing functions to include 2d #164
• Implement 3D Perlin Noise

Other Information

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

Version used

Environment details (OS name and version, etc.)

[prithvidasgupta]

@ulises-jeremias I was working on the 3d noise generation today (just trying out VLang). I think there is a bug on

vsl/noise/perlin.v

Line 33 in 02221fd

sy := y - f32(y2)

shouldn't it be sy := y - f32(y1) ? Or is my understanding incorrect?

[ulises-jeremias]

just in case I'll include @boonsboos on this conversation because he was the creator of that module 😊 in any case, I'll take a look later just to confirm!

[prithvidasgupta]

@ulises-jeremias should i just port Perlin's original implementation to vlang/vsl? https://mrl.cs.nyu.edu/~perlin/noise/

[PottierLoic]

Hello i just compared a basic noise function (random value everywhere, no perlin or other stuffs) and the 2d perlin noise from vsl.

basic noise here

and actual 2d perlin noise here

Perlin noise should be way smoother so I made another implementation based on this https://adrianb.io/2014/08/09/perlinnoise.html and it looks like this :

(The little glitch on the bottom is only caused by the screenshot)

Can I try to submit a PR for 2d and 3d perlin ?

[ulises-jeremias]

@PottierLoic sure! Go for it!