second iteration

based on a particle simulation - you can see the positions encoded in the leftmost column the particles actually are where two spheres touch and the odd marble shader connects them with circles here's the link: twigl.app/?ol=true&ss=-N…

#define M texture(b,vec2(.5,i)/r.y) float i,N=77.;vec2 q=M.xy,p=(FC.xy-.5*r)/r.y,n=(m-.5)*r/r.y;if(FC.x==.5){i=FC.y+.1*m.y;o=M;o.xy+=exp(-9.*length(n-o.xy))*(n-o.xy);for(i=0.;++i<N;o-=4e-3*normalize(M-o));}for(;++i<N;q=M.xy)o.rgb+=hsv(.6,M.z,3e-4/(dot(p-q,p-M.xy))); #つぶやきGLSL

@XorDev For general code golfing purposes I found it useful to also try the inverse of the golden ratio, sqrt(1.25)-.5 = 1/phi = phi-1. Sometimes this can save you a few characters for scaling. And here's another example using twigl's "sound shader" capability. x.com/2ndIteration/s…

@XorDev While this is true for disentangling 2 variables, sqrt(e) is more suitable for 3 or more. I actually explored this because of grid cells, which our brains use to map physical and conceptual spaces. Here's a visual explanation using Lissajous curves: twigl.app/?ol=true&ss=-N…

The least rational number: phi = .5+sqrt(1.25) If you want to break repeating patterns, multiply by phi.

@XorDev #define M clamp(cos(t),-.5,.5)) vec2 p=(FC.xy-.5*r)/r.y;vec3 i;float n,d,P=(.5-M*(sqrt(1.25)+.5)+(.5+M*sqrt(exp(1.)),N=1e3,L=exp(9.*m.x)+t*.1;for(;n++<N;){i=rotate3D(PI2*m.y,vec3(-1))*.2*sin(t*.1+.01*t+n/N*L*vec3(P,P*P,1));d=length(p-i.xy/(1.-i.z));o.rgb+=hsv(n/N,.6,6e-6/d/d);}

@XorDev The shader transitions between sqrt(exp(1)) and sqrt(1.25)+.5 every few seconds. Phi maps points onto a surface resembling projections of higher dimensional objects like these. Beautiful, but not optimal. Who can math hard enough to explain why? x.com/2ndIteration/s…

mouse y controls zoom twigl.app/?ol=true&ss=-N…

//#genuary2023 27 - Hilma af Klint vec2 p=(3.-2.9*m.y)*(FC.xy-.5*r)/r.y;float l=length(p-snoise2D(p*3.+t*.2)*p/4e1);o.rgb=hsv(floor(l/.1)*.05+floor(l/.3)*.45,.4+.3*sign(.6-l),.01/mod(l,.1)/(l+abs(snoise3D(vec3(p*77.*l,t*.1)))))+.001/abs(mod(l+.05,.1)-.05);//#つぶやきGLSL #genuary

can be tuned using a MIDI-keyboard in real-time

#genuary2023 24 - textile #3Dprint of compute shader physics in #VR direct G-code export, no STL texture generated by interlaced particles #genuary #3Dprinting

mouse x controls size and y controls wigglyness twigl.app/?ol=true&ss=-N…

//#genuary2023 20 - art deco vec2 p=exp(3.*m.x)*(FC.xy-r*.5)/r.y;float i,s;for(;i<.16;i+=.03){s=abs(((mod(p.x-i*22.,1.)-.5)+m.y*.1*snoise2D(p+t*i))*6.)-exp(-pow((mod(p.y-i*22.,2.)-1.)*1.4*PI,2.));o.rgb+=hsv(i,.1,exp(-8.*abs(s-.1)))+hsv(i,1.,+.1*exp(-s));} //#つぶやきGLSL #genuary

//#genuary2023 15 - sines #define l(j)min(3e-5/abs(mod(j+.1,.2)-.1),.1) vec2 p=FC.xy/r.y-.5;float i=1.,k,N=exp(m.x*6.); for(;i<N;i+=2.)k+=sin(p.x*1.5*i*PI2-t*(i-1.))/i*.1*min(N-i,1.); o.rgb+=hsv(.4,.8,.01/abs(p.y-k)+.1*abs(snoise2D(FC.xy)))+l(p.x)+l(p.y); //#つぶやきGLSL #genuary

#genuary2023 12 - tessellation rhombic dodecahedron voxel painting in #VR #unity and no mesh #genuary

vec2 q,p=(FC.xy-r*.5)/r.y; float i,N=1e2,d; o+=texture(b,p/.999*r.y/r+.5)*.99-.002; for(;i++<N;){ q=(mod(t/9.+i/N,.3)+.07)*cos((i+PI2*vec2(0,.25)+.1*snoise2D(vec2(i*9.,.5*t)))); d=sqrt(.37-length(q)); o.rgb+=hsv(t*.1,.4,.5*exp(-7e2*(d+.04)*length(p-q)));} //#つぶやきGLSL #genuary

#genuary2023 09 - plants using a MIDI-keyboard to tune the compute shader "rendering" process will take until the end of #genuary (assuming it works)

#genuary2023 08 - SDFs 3D squircle = sphube #genuary #VR #cellularautomata

link to live shader: bit.ly/3inMubC

float d,N=33.,n; vec2 p=abs(FC.xy-.5*r+snoise2D(FC.xy/r*9.+.1*t)); d=.2+abs(snoise3D(vec3(p/r-t*.1,t*.1))); for(n=-N;n++<N;) o.a+=d/1e4-texture(b,(p+r*.5+7.*(sign(n)+2.)*d*cos(PI2*(n/N+vec2(0,.25))))/r).a*sign(n)*.5; o.rgb+=hsv(d,.3,o.a/sqrt(9.+p.x+p.y)); //#つぶやきGLSL #genuary

#genuary2023 06 - steal like an artist magnificent bird magnus opum second iteration #genuary #stablediffusion