Robert

[Robert @robert_trirop]

From 2021, still going in circles. 🌈

A shader I wrote on Shadertoy back in 2021, revisited as a seamless loop. Sevenfold symmetry, shifting colours, and a few lines of GLSL turning maths into motion.

#Shadertoy #ShaderArt #GenerativeArt #CreativeCoding #GLSL

[Robert @robert_trirop]

@historyinmemes @landru79

[Robert @robert_trirop]

@Sciencenature14 Video Credits: @teunvanderzalm
This is his Instagram: https://t.co/eUQyFdYLzL

[Robert @robert_trirop]

@danielhchitwood In fact, it's a relatively simple setup that I built just a few days ago. Mainly a few poles and connectors from the garden section of the DIY store, some towels to block external light, my old iPad on a cardboard box, and an efficient LED lamp.

[Robert @robert_trirop]

@danielhchitwood Looks cool how the leaf is slowly getting longer!
Reminds me of a time-lapse shot I just finished today. There you can also see how a rolled-up leaf slowly grows 🙂 (33 hours under an LED grow lamp)

[Robert @robert_trirop]

Some more (sin(y),cos(x)) advection experiments:

[Robert @robert_trirop]

Some experiments from 2017: Using the vector field v=(sin(y),cos(x)) to advect different patterns.

[Robert @robert_trirop]

@graveolens This is the formula for the circle (the fractals from my initial post are just zoomed into the center of the circle) - there are some hidden sweet spots for c. Using fractional powers in the formula is also quite fun :).

[Robert @robert_trirop]

@graveolens The code is really versatile - there is a vast amount of fancy curly structures hidden in the parameter space. Zooming out x100 reveals a circular structure. The principle idea is to alternate between a Julia iteration and a sum of different powers (also negative & non-integer).

[Robert @robert_trirop]

Some colorful fractal experiments from 2015. Heavily inspired by a shader from @iquilezles (https://t.co/kyl8Jt4ack).

[Robert @robert_trirop]

@Trinh_D_Nguyen Very Pretty! Looks like a DMD on the right side (DLPLCR9000EVM I think). I guess it's used to generate some sort of patterned illumination - do you actually make use of the high spatio-temporal resolution of the DMD (WQXGA at almost 10 kHz)?

[Robert @robert_trirop]

@N_EDITS @JacquesLucke Thank you! There's a good tutorial from @JacquesLucke: https://t.co/poU8o6mPtR

[Robert @robert_trirop]

Growing some Lindenmayer systems in #b3d with the #AnimationNodes addon from @JacquesLucke.

[Robert @robert_trirop]

@mauro_pfister @OmarEmaraDev @bluefox_3d @JacquesLucke

[Robert @robert_trirop]

@mauro_pfister @OmarEmaraDev @bluefox_3d @JacquesLucke This is my shot at making it work. I think it's impossible to get the correct rotation without taking the whole roll history of the ball into account. This is why I use the previous rotation state of the ball and apply a rotation matrix based on the spline normal.

[Robert @robert_trirop]

@mikelectricstuf @nanographs The scalebar looks a bit off though. You could build a Full HD chip with a width of just under 1mm like that. The one I recently used had a micromirror pitch of just under 8um.

[Robert @robert_trirop]

@gabrielpeyre @sigfpe This is what the indexing looks like for 1000 eigenvalues.

[Robert @robert_trirop]

@gabrielpeyre @sigfpe I tried it with a 100x100 matrix. Using the nearest points between each interpolation step for indexing works well, but is not reliable.