Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #153929

Re: terminal graphics using braille characters

Show all headers | View raw

luser droog <luser.droog@gmail.com> wrote:
> https://codereview.stackexchange.com/questions/248021/
>         text-based-rendering-animation-engine-for-the-terminal

Very cute. But I give up... where does "766F6964" come from?
And here's a 31-line terminal animation of stored functions...

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/* --- entry point --- */
void asciigraph ( double *f, int n ) {
  int    row=0,nrows=24, col=0,ncols=78;
  double bigf=0.0;
  for ( col=0; col<n; col++ )
    if ( fabs(f[col]) > bigf ) bigf = fabs(f[col]);
  for ( row=0; row<nrows; row++ ) {
    double yval = bigf*((double)(nrows/2-row))/((double)(nrows/2));
    for ( col=0; col<ncols; col++ )
      printf("%c",(yval*f[(col*(n-1))/(ncols-1)]>=yval*yval? '*':' '));
    printf("\n"); }
  } /* --- end-of-function asciigraph() --- */

#ifdef TESTDRIVE
int main ( int argc, char *argv[] ) {
  double f[999], pi=3.14159;            /* stored function to be graphed */
  double t=0.0, dt=0.05, w1=16.,w2=3.;  int Nt=50;
  int    i=0, N=511;                    /* f[] index */
  void   asciigraph();
  while ( --Nt > 0 ) {
    for ( i=0; i<N; i++ ) {
      double x = 2.0*pi*((double)i)/((double)(N-1));
      f[i] = .75*sin(2.*x+pi/3.+w1*t) + 1.*sin(1.*x+pi/2.+w2*t); }
    system("sleep 0.25; clear");
    asciigraph(f,N);
    t += dt; }
  } /* --- end-of-function main() --- */
#endif

-- 
JohnF  ( mailto:  j@f.com  where j=john and f=forkosh )

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

terminal graphics using braille characters luser droog <luser.droog@gmail.com> - 2020-08-22 17:41 -0700
  Re: terminal graphics using braille characters JohnF <John@F.com> - 2020-08-23 03:32 +0000
    Re: terminal graphics using braille characters Eli the Bearded <*@eli.users.panix.com> - 2020-08-23 06:52 +0000
      Re: terminal graphics using braille characters "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2020-08-23 01:58 -0700
      Re: terminal graphics using braille characters John Forkosh <forkosh@panix.com> - 2020-08-24 06:10 +0000
    Re: terminal graphics using braille characters luser droog <luser.droog@gmail.com> - 2020-08-23 00:07 -0700
      Re: terminal graphics using braille characters Öö Tiib <ootiib@hot.ee> - 2020-08-23 01:35 -0700
      Re: terminal graphics using braille characters John Forkosh <forkosh@panix.com> - 2020-08-24 06:26 +0000
        Re: terminal graphics using braille characters luser droog <luser.droog@gmail.com> - 2020-08-23 23:59 -0700
          Re: terminal graphics using braille characters John Forkosh <forkosh@panix.com> - 2020-08-24 09:58 +0000

csiph-web