flarn2006

// consine.c - Displays a 2D sine pattern in the console
// Created by flarn2006
// License: Creative Commons BY-NC-SA 3.0

#include <curses.h>
#include <math.h>
#include <stdlib.h>

char levelchar(float value);

int main(int argc, const char *argv[]) {
    int x, y;
    int maxx, maxy;
    initscr();
    cbreak();
    noecho();
    getmaxyx(stdscr, maxy, maxx);

    for (y=0; y<=maxy; y++)
    for (x=0; x<=maxx; x++) {
        float fx = (float)x;
        float fy = (float)y;
        float value = fabsf(sin(fx/5.0)+sin(fy/2.5));
        value /= 2.0;
        char level = levelchar(value);
        mvaddch(y, x, level);
    }

    getch();
    endwin();
    return 0;
}

char levelchar(float value)
{
    const char *levels = "'.,-:;!|@#";
    int index = (int)(10*value) % 10;
    return levels[index];
}