//#Processing int n=999,i,s; float a[]=new float[n*2],x,y,e,f,d,k=400; void setup(){ size(800,800); for(i=0;i<n*2;i++)a[i]=random(-k,k);} void draw(){ noStroke(); fill(0,9);square(0,0,800); translate(k,k); fill(-1); for(i=1;i<n;i++){ x=0;y=0; for(s=1;s<n;s++){ if(i!=s){ //cont.

//cont. d=dist(a[i],a[i+n],a[s],a[s+n]); e=(a[s]-a[i])/d/d; f=(a[s+n]-a[i+n])/d/d; x+=d<50?-9*e:e;y+=d<50?-9*f:f; }} d=dist(a[i],a[i+n],a[0],a[n]); a[i]+=x-200*(a[0]-a[i])/d/d; a[i+n]+=y-200*(a[n]-a[i+n])/d/d; circle(a[i]*=abs(a[i])>k?-1:1,a[i+n]*=abs(a[i+n])>k?-1:1,5); } //cont.

//cont. fill(#FF0000); circle(a[0]+=(a[1]-a[0])/99,a[n]+=(a[n+1]-a[n])/99,30);}

What a lovely boid

Just me and the boids hanging out

It has a beauty of flow that is...( )

ひさだんさんこれわ美しいです！！

What program is it?

Spectacular organic wow 💎

Nice code! Looks like a pixel art magic trick in progress.