An interactive plot of the Mandelbrot Set drawn using ASCII in your terminal!
The program is written in C and may look vaguely familiar.
//
struct C
{double r ;
double i
;}; ///
/** */struct C o={.r=0.0,.i //
=0.0};struct C sq(struct C z){// ////
struct C m={.r=(z.r*z.r)-(z.i*z.i),.
i=2*z.r*z.i};return m;}struct C ad(////
struct C a,struct C b){struct C s={.r=a.r+
b.r,.i=a.i+b.i};return s;}struct C f(struct
C z /** * */,struct C c){struct C m=ad(sq(z),c);return m;
}double d(/** */struct C a,struct C b){return sqrt(pow(a.r-b.
r,2)+pow(a.i-b.i,2 ));}double st(int i,struct C z,struct C c,double
t){if(d(z,o)>2){/*** */return 0;}struct C m=f(z,c);if(d(z,m)<t||i>//
200 ){return(double)1/i;}return st(i+1,m,c,t);}int main(){struct C c;///
/**********************/double s;double sc=1;double ps=1;double r=-2.0;double pr=-2.0;double
i=1 ;double pi=1;int h=R*2/3;int w=R*2;int n=0;for (;;){for(int j=0;j<h;j
++){for(int k=0;k<w;k++){c.r=r+(double)k*sc*(double)3/(R*9/4);c.i=i-//
(double)j*sc*(/** */double)3/R;s=st(1,f(o,c),c,0.1);char sh=s>0?'%'
:' ';printf/* */("%c",sh);}printf("\n");}scanf("%d", &n);////
printf("\n");if(n<0)return 0;else if(n==0){sc=
ps;r=pr;i=pi;}else{ps=sc;sc=sc/2;pi=i;pr=r
;if(n>=7){r+=sc*(n-7);}else if(n>=4){i-=
sc;r+=sc*(n-4);}else if(n>=1){i-=sc*2;
r+=sc*(n-1);}}}return 0;}/*%%%%%%% &&&
%%% Made-by-Curtis-Upshall(2021) %
%%% %%%
%%%%%%%%% %
%%%%%%%%%
*/Simply clone the repo and run make run. The image is split into nine quadrants that can be zoomed in on, which correspond to the numbers on a keyboard's numberpad. Enter a number between 1 and 9 to zoom in, 0 to go back and -1 to exit the program.
The original source code (before being minified) is created by me. I've included it in the repo as unminified.c!
"Mandelbrot Set". Wikipedia. https://en.wikipedia.org/wiki/Mandelbrot_set