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aclock-unix-curses.c
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/*
* aclock - ascii clock for UNIX Console
*
* Copyright (c) 2002 Antoni Sawicki <[email protected]>
* Version 2.3 (unix-curses); Mountain View, July 2013
*
* Compilation: cc aclock-unix-curses.c -o aclock -lcurses -lm
*
*/
#include <stdio.h>
#include <unistd.h>
#include <curses.h>
#include <math.h>
#include <time.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#define FontWH_Ratio 2
#define Number_InsetDistance 1
#define HR24 1
#define Draw_Numbers 1
void draw_circle(int hand_max, int sYcen, int sXcen)
{
int x, y, r;
char c;
for (r = 0; r < 60; r++)
{
x = cos(r * M_PI / 180 * 6) * hand_max * FontWH_Ratio + sXcen;
y = sin(r * M_PI / 180 * 6) * hand_max + sYcen;
switch (r)
{
case 0:
case 5:
case 10:
case 15:
case 20:
case 25:
case 30:
case 35:
case 40:
case 45:
case 50:
case 55: c = 'o'; break;
default: c = '.'; break;
}
mvaddch(y, x, c);
}
// Draw numbers
if (!Draw_Numbers) { return; }
int angle = 360 / (HR24 ? 24 : 12);
int xLength = (hand_max - Number_InsetDistance) * FontWH_Ratio;
int yLength = (hand_max - Number_InsetDistance);
for (r = 1; r < (HR24 ? 24 : 12) + 1; r++)
{
x = cos(((r * angle) - 90) * (M_PI / 180)) * xLength + sXcen;
y = sin(((r * angle) - 90) * (M_PI / 180)) * yLength + sYcen;
char str[3];
sprintf(str, "%02d", r);
mvaddstr(y, x, str);
}
}
void draw_hand(int minute, int hlenght, char c, int sXcen, int sYcen)
{
int x, y, n;
float r = (minute - 15) * (M_PI / 180) * 6;
for (n = 1; n < hlenght; n++)
{
x = cos(r) * n * FontWH_Ratio + sXcen;
y = sin(r) * n + sYcen;
mvaddch(y, x, c);
}
}
int main(void)
{
char INFO[] = "Copyright (c) 1994-2013 Antoni Sawicki <[email protected]>\n"
"Version 2.3 (unix-curses); Mountain View, July 2013\n"
"Updated 2023 for 24hr by <[email protected]>\n";
char digital_time[15];
int sXmax, sYmax, smax, hand_max, sXcen, sYcen;
time_t t;
struct tm * ltime;
sXmax = sYmax = hand_max = sXcen = sYcen = 0;
initscr();
while (1)
{
time(&t);
ltime = localtime(&t);
sXmax = COLS;
sYmax = LINES;
if (sXmax / FontWH_Ratio <= sYmax)
smax = sXmax / FontWH_Ratio;
else
smax = sYmax;
hand_max = (smax / 2) - 1;
sXcen = sXmax / 2;
sYcen = sYmax / 2;
erase();
draw_circle(hand_max, sYcen, sXcen);
draw_hand(
((ltime->tm_hour * 5) + (ltime->tm_min / 10)) / (HR24 ? 2 : 1), //Half the minutes/angle if a full revolution is 24 hours
2 * hand_max / 3,
'h',
sXcen,
sYcen);
draw_hand(ltime->tm_min, hand_max - 2, 'm', sXcen, sYcen);
draw_hand(ltime->tm_sec, hand_max - 1, '.', sXcen, sYcen);
const char* title = (HR24 ? ".:ACLOCK24:." : ".:ACLOCK:.");
mvaddstr(sYcen - (3 * hand_max / 5), sXcen - 5, title); //TODO Fix the offset for the 24
mvprintw(
sYcen + (3 * hand_max / 5),
sXcen - 5,
"[%02d:%02d:%02d]",
ltime->tm_hour,
ltime->tm_min,
ltime->tm_sec);
refresh();
sleep(1);
}
endwin();
return 0;
}