#simplex noise

[dustrial-inc]

💀 Electronic death music in cyberspace

Dustrial_Inc - Twitch

Dustrial_Inc - Twitch

[procedural-generation]

Generative Knitwear

OK, this is seriously cool and I know a lot of people who will be into it: generative knitwear Rianna [https://www.patreon.com/vividfax] is

Generative knitwear! Simplex noise hats! Someone should tell Ken Perlin.

[itsgeometrical]

Hatch Lava Lamp

Animation of an image by Antoine Guillien (at1lab on insta): https://www.instagram.com/p/B4fFawqFe6o/

For this animation, I generated a random, hatched background, and then mask it out. The mask shapes are made using simplex noise. Specifically I used an implementation of simplex noise by Kurt Spencer called Open Simplex Noise found here: https://gist.github.com/KdotJPG/b1270127455a94ac5d19

I used this external noise generator because the Perlin Noise generator built into Processing only goes up to 3 dimensions, but I needed 4: width, height, and then two extra dimensions to travel through time in a circular motion. If I wasn’t trying to make a looping animation, I could have done with only 3 dimensions as I wouldn’t have needed an extra dimension to loop back, i.e. my motion through time would have been a 1-dimensional line rather than a 2-dimensional circle.

Also, simplex noise is supposedly cleaner (fewer directional artifacts) and faster than Perlin Noise.

That being said, this animation took longer than usual to to render. In most of my animations, each frame is usually generated and then saved in maybe 0.25 of a second. But while rendering this one, each frame takes about 5 seconds to generate and save. There are several factors that I think play into this. First, I’m using a lot of off screen PGraphics renderers to create images and masks which I’ve noticed slow down a program. I guess using them and creating them is CPU intensive. Second, using 4D noise is inherently slower than calculating noise in lower dimensions.

Source code: https://gist.github.com/teshapiro/c20f9eba42574560171b2e21b370cd3c

[any-a]

Generative plants

[avenuecanyons]

Fractal Terrain Generator ~ Virtual landscapes and textures generated throught the Perlin Noise gradient algorithm. Perlin Noise is a computer generated texture that creates blurr and the illusion of distance and focus through texture synthesis. It injects randomness into codes that gives the illusion of a natural irregular texture.

[necessary-disorder]

[dustrial-inc]

Blue && Yellow Circles

[procedural-generation]

Looping with Noise

This is a trick I’ve known for ages from VFX work, so I really like this through explanation by Etienne Jacob (who has an excellent Tumblr blog of generative stuff). The post also explores a bunch of different things that you can draw with noise. Perlin (and Simplex) noise is useful for more than just the heightfield maps you may be used to!

Golan Leven has made an animation that demonstrates the basic idea behind the looping animations even more directly. (And provided source code for that too.) Like I said, this is one of my favorite noise tricks, and it works with any application of noise, so long as you have noise that’s at least 1 dimension higher than your output. And while circles are easiest (just rotate around a point) you can use any closed figure or repeating loop.

https://necessarydisorder.wordpress.com/2017/11/15/drawing-from-noise-and-then-making-animated-loopy-gifs-from-there/

https://gist.github.com/golanlevin/46a8fd29114f7a9f41345a9f0ccfd059