@scdollins@genart.social
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scdollins

@scdollins@genart.social

Mazes. Motion. Mathematics.
Enslaved in the Scrolls

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scdollins, to genart
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Star flow

a little - Lava Lamp
and a lot of - Wobbly functions

Looping animation of dense yellow and magenta flow lines through a five-fold symmetric field of sines forming stars and pentagons

danil, to GraphicsProgramming
@danil@mastodon.gamedev.place avatar

New blog post - Hash Noise stability in GPU Shaders -
https://arugl.medium.com/hash-noise-in-gpu-shaders-210188ac3a3e

scdollins,
@scdollins@genart.social avatar

@danil Do you know about http://www.jcgt.org/published/0009/03/02/ and
https://www.shadertoy.com/view/XlGcRh

pcg4d has become my favorite hash. As a 4-in/4-out you can give it a random seed and xyz and get out 4 values at once.

scdollins,
@scdollins@genart.social avatar

@danil Ah, sorry, yes you do. Bad reading comprehension on my part.

Though it slows it down even more, one way to get better int to float consistency is to only use 24 bits of the int (right shift by 8 bits) so that it fits cleanly into the mantissa. Arch differences come in the way they round the lowest bits, so to keep it clean, just cut them off.

But as you say, if you're coming from floats, it'll be faster to stay there.

scdollins, to genart
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Hexagonal Borromean links

- Hexagonal

scdollins, to genart
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Hexadelic maze

- Hexagonal

scdollins,
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@wow_elec_tron It's made with a program I wrote in Processing.

scdollins, to genart
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Hexagonal sheets

- Hexagonal

scdollins, to genart
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Hex tiling mazes

- Hexagonal

scdollins, to genart
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Hex maze

- Hexagonal

scdollins, to genart
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Layers of RGB

Broken layers of red, green, and blue swirl around through a cycling noise field

scdollins, to genart
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"Universe man, Universe man
Size of the entire universe man"

https://infinitefunspace.com/p5/fly/ lets you fly through this "infinite" toroidal cube of 1M particles of ray-marched geometry spread by a moving noise function for extra texture.

Use the arrows and ASDW to move. [ and ] change the number of shapes. T toggles the text. N toggles the noise. L toggles layers.

- Particles
- SDFs
- Shaders

scdollins, to genart
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"Particle man, particle man
Doing the things a particle can"

Play with this image live (and check out its source code) at https://infinitefunspace.com/p5/ball/ Drag with the mouse or your finger to spin it around.

It uses buffer-less rendering of 100,000 screen-aligned triangles textured with spheres. Each one is sized, colored, and animated entirely within the vertex shader.

- Particles
- Shaders

scdollins, to generative
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Eye see U

scdollins, to generative
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Squircle loops

scdollins, to generative
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Four rippling rainbow flow stills

video compression makes sharing loops possible, but plays havoc with fine detail

Multi-colored flow lines sweep through a field of undulating sine waves
Multi-colored flow lines sweep through a field of undulating sine waves
Multi-colored flow lines sweep through a field of undulating sine waves

scdollins, to generative
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Rippling rainbow flow

Rainbow-colored waves of flow lines twist through undulating sine waves in a looping animation

scdollins, to generative
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A disc in the waves

Looping grayscale animation of flow lines through sine waves with a disc distorting the flow in the center

TomF, to random
@TomF@mastodon.gamedev.place avatar

Here's a picture. Quickly count how many players are on each of the two teams, then answer the poll in the following comment.

scdollins,
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@TomF @aeva As is more common, I'm slightly red insensitive but have no trouble distinguishing red and green. A better test (not better, but different) would test thin red lines on black, or cyan on white, or yellow on bright green.

Pure red error messages on a black console window particularly suck. Ideally, red fonts should always include a bit of green to help it stand out from a black background or from other black text on a light background.

scdollins, to generative
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Creepy chromatic coral

Looping animation of a tangle of wiggly branching multi-colored tubes fills a rotating spherical volume. Whitish bulges move through the tubes until they hit dead-ends and then fade away.

bit101, to random
@bit101@mstdn.social avatar

A function I made this year that I wish I made decades ago

// WrapTau wraps a number to be within 0 (inclusive) to 2 * Pi (exclusive).
func WrapTau(value float64) float64 {
return math.Mod(math.Mod(value, Tau)+Tau, Tau)
}

scdollins,
@scdollins@genart.social avatar

@bit101 The glsl docs say they compute mod() as x - y * floor(x/y), so at least there you don't need the double mod to get a positive result. You might want to speed test their version to compare.

TodePond, to random
@TodePond@mas.to avatar

YOU CAN JUST ASK

Something I’m learning recently: You can just ask.

https://www.todepond.com/wikiblogarden/sayings/just-ask/

scdollins,
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@TodePond Do you know about https://casual-effects.com/markdeep/ ? Write your page in markdown plus a number of extras, add a simple script comment at the end, and you get formatted html.

scdollins, to generative
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A collection of grid-free mazes

I usually create mazes by growing the paths. These, instead, grow the walls.

Growing the paths gives more control. While I like these aesthetically, their solutions tend to be pretty simple.

Circle maze with very wiggly square-aligned walls
Circle maze with wiggly square-aligned walls. The spacing grows and shrinks in spirals from the center.
Circle maze with wiggly zig-zagging triangular walls.

scdollins,
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A few more grid-free mazes

Circle maze with long curling walls
Circle maze with a square grid wrapped around the center. The walls get more chaotic towards the middle.

scdollins,
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@Haldane Thanks! It's my own code written in Processing though using OpenGL and shaders to do the rendering.

The algorithm is similar to the one described here: https://sighack.com/post/poisson-disk-sampling-bridsons-algorithm

scdollins, to generative
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There is only one ball.

https://www.youtube.com/watch?v=fgp1-fQsBeg

Looping animation of what appears to be several multi-colored balls that grow and shrink as they squirm around each other, but they are all the same ball on a time-looping path.

scdollins,
@scdollins@genart.social avatar

In a crowd all by myself

Looping animation of colored balls moving around each other bounded by a square. All of the balls are following the same very tangled path.

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