a=(x,y,d=9*cos(o=mag(k=x/8-12.5,e=y/8-12.5)**2/139))=>stroke(99+99/sin(k)*sin(t+e)**2,66).point((x+sin(d)*d*k)/2+150+o*k*sin(t+d*o),y/9-d*15-cos(d*2)*d+220+d*sin(d-t)) t=0,draw=$=>{t||createCanvas(w=400,w);background(6);for(t+=PI/90,i=4e4;i--;)a(i%200,i/200)} #つぶやきProcessing

#define A p=abs(p) vec3 p,q;q.y++;q.z=t;for(float e,j,i,S;i++<1e2;A/S,e=min(q.y-.5-p.x,p.z+p.x-.05),o+=.004/exp(e*1e3)+(2.-q.y)/vec4(4,6,9,0)/exp(p.z*80.))for(j=S=2.,p=q+=e/j-FC.rgb/r.y*e,p.z-=ceil(p.z),A-.5;j++<7.;p.z+=4.-q.y)S/=e=min(dot(A-.9+snoise2D(q.yz)*.1,p),2.)/8.,A/e-4.;

LiDAR sensor with DoF particles

f=0,draw=o=>{for(f||createCanvas(W=400,W),background(0),stroke(W),Y=250;Y>150;Y-=2)for(j=0;j<120;j++)for(i=0;i<TAU;i+=PI/2)stroke(2*j),n=noise(i,Y,f/666)-.5,x=sin(i*n*12)*j+200,F=99*cos((j/9-f)/9),y=cos(i*n*12)*j/2+Y+F,point(x,y);f+=.5};//#つぶやきProcessing

vec4 x=vec4(9,8,7,1);float i,e,a,y;vec3 p,q,d=FC.bgr/r.y-.5;q-=8.;for(d.xz*=rotate2D(.4);i++<2e2;e=max(-e,y))for(o+=i>175.?d/=d+d,tanh(log(e+=.01))/x/x:x/2e3/exp(e*1e3),p=q+=d*e,y=p.y,p.y=mod(y+t,40.)-20.,a=6.;a>.1;a*=.6)p=abs(p)-a-a,e=min(e,max(max(p.x,p.z),p.y+.5+.5*sin(y+a)));

Today I learned the city of Tokyo released point cloud data of the entire city for free for anyone to download 👀

a=(x,y,o=mag(k=x/4-12.5,e=y/9)/9)=>point((q=x+99+cos(9/k)+o*k*(cos(e*9)/3+cos(y/9)/.7)*sin(o*4-t))*.7*sin(c=o*e/30-t/8)+200,200+y/9*cos(c*4-t/2)-q/2*cos(c)) t=0,draw=$=>{t||createCanvas(w=400,w);background(6).stroke(w,46);for(t+=PI/60,i=3e4;i--;)a(i%100,i/150)}#つぶやきProcessing

//#Processing float t; void setup(){ size(800,800); } void draw(){ float i,j; background(#F0E0D0); stroke(0,99);noFill(); for(j=-1;j<1;j+=.1){ beginShape(); for(i=-PI;i<=PI;i+=PI/100)a(i,j); endShape(); } for(i=-PI;i<PI;i+=PI/100){ beginShape(); for(j=-1;j<1;j+=.1)a(i,j); //cont.

f=0,draw=r=>{for(f||createCanvas(W=400,W),background(0),N=noise,translate(d=200,d),a=0;a<TAU;a+=PI/64)for(rotate(PI/64),i=1;i>0;i-=.002)x=N(I=i-f,f/3,a)*i*W,y=N(f/2,I,a)*i*W,stroke(W,d-i*d),point(x,y);f+=.005};//#つぶやきProcessing #generativeart #p5js

a=(x,y,d=5*cos(o=mag(k=x/8-12.5,e=y/8-12.5)/12*cos(sin(k/2)*cos(e/2))))=> point((x+d*k*(sin(d*2+t)+sin(y*o*o)/9))/1.5+133,(y/3-d*40+19*cos(d+t))*1.5+300) t=0,draw=$=>{t||createCanvas(w=400,w);background(6,96).stroke(w,46);for(t+=PI/90,i=4e4;i--;)a(i%200,i/200)}#つぶやきProcessing

// Any three (non colinear) points define a circle // { .xy=center, .z=radius } vec3 getCircle( vec2 a, vec2 b, vec2 c ) { vec2 ba = b-a, cb = c-b, ac = a-c; float de = ba.x*cb.y-ba.y*cb.x; // zero if colinear vec2 ce = 0.5*(a+b+vec2(ba.y,-ba.x)*dot(ac,cb)/de);

#genuary2025 #genuary10 Day 10: "only use TAU in your code" I cheated by deriving other numbers, like int(TAU) = 6, int(sqrt(TAU)) = 2, etc.

Going recursive. Interaction remains the same.

a=(x,y,k=x/8-12.5,d=cos(k/2)+sin(y/3)-.5)=>point((q=x/4+60+d*k*(1+cos(d*4-t*2+y/14)))*.7*cos(c=y*d/169-t/8+d/9)+200+60*sin(t*3/32+c/4),(q+59)*.7*sin(c)+200) t=0,draw=$=>{t||createCanvas(w=400,w);background(0).stroke(w,36);for(t+=PI/30,i=4e4;i--;)a(i%200,i/400)}#つぶやきProcessing

#つぶやきGLSL #11am10pm float i,e,R,s;vec3 q,p,d=vec3(FC.xy/r+vec2(-.5,1.4),2);for(q.zy--;i++<119.;){o.rgb+=.027-hsv(.6,p.y,.02);s=.9,p=q+=d*e*R*.04;p=vec3(log2(R=length(p))-t*.5,exp(-p.z/R),atan(p.y,p.x)-t*.5);for(e=--p.y;s<3e2;s+=s)e+=.09-abs(dot(sin(p.zxy*s),cos(p*s))/s*.25);}

Understanding GPU bottlenecks is easy with a visualisation 👨🏻‍🍳

f=0,draw=o=>{for(f||createCanvas(W=400,W),background(P=PI,d=200),N=noise,a=-P;a<P;a+=P/16)for(fill(W,3),bezier(d,Y=150+9*cos(9*f),d-9*a,150,d-a*(9*sin(9*f)+9),d,d,Y),i=1;i>0;i-=.01)stroke(W,d-i*d),point((N(i-f,f/3,a)-P/8)*i*W+d,N(f/2,i-f,a)*i*W+Y+9);f+=.003};//#つぶやきProcessing

a=(x,y,o=mag(k=x/4-12.5,e=y/9)/9)=>point((q=x/3+99+3/k*sin(y)+k*(1+cos(y)/3+sin(e+o*4-t*2)))*cos(c=o/5+e/4-t/8)+200,(q+49)*sin(c)*cos(c)-q/3+30*o+220) t=0,draw=$=>{t||createCanvas(w=400,w);background(6).stroke(w,46);for(t+=PI/90,i=2e4;i--;)a(i%100,i/350)}// #つぶやきProcessing

"Event Horizon" in one equation

Blackhole in 350 characters of #GLSL: vec2 p=(FC.xy*2.-r)/r.y/.7,d=vec2(-1,1),c=p*mat2(1,1,d/(.1+5./dot(5.*p-d,5.*p-d))),v=c;v*=mat2(cos(log(length(v))+t*.2+vec4(0,33,11,0)))*5.;for(float