Forwarded from the conference of the birds
X (formerly Twitter)
ひさだん on X
//#つぶやきProcessing
int n=999999,p[]=new int[n],i,j;
float t=1;
void setup(){
size(800,800);
for(i=2;i<n;i++)if(p[i]==0)for(j=i+i;j<n;j+=i)p[j]=i;
}
void draw(){
clear();
stroke(-1);
for(i=2;i<n;i++)if(p[i]==0)circle(i*sin(i*t)/99+400,i*cos(i*t)/99+400,2);…
int n=999999,p[]=new int[n],i,j;
float t=1;
void setup(){
size(800,800);
for(i=2;i<n;i++)if(p[i]==0)for(j=i+i;j<n;j+=i)p[j]=i;
}
void draw(){
clear();
stroke(-1);
for(i=2;i<n;i++)if(p[i]==0)circle(i*sin(i*t)/99+400,i*cos(i*t)/99+400,2);…