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/* $Id: tclock.c,v 1.31 2012/06/09 19:17:02 tom Exp $ */ #include <test.priv.h> #if HAVE_MATH_H #include <math.h> #if TIME_WITH_SYS_TIME # include <sys/time.h> # include <time.h> #else # if HAVE_SYS_TIME_H # include <sys/time.h> # else # include <time.h> # endif #endif /* tclock - analog/digital clock for curses. If it gives you joy, then (a) I'm glad (b) you need to get out more :-) This program is copyright Howard Jones, September 1994 (ha.jones@ic.ac.uk). It may be freely distributed as long as this copyright message remains intact, and any modifications are clearly marked as such. [In fact, if you modify it, I wouldn't mind the modifications back, especially if they add any nice features. A good one would be a precalc table for the 60 hand positions, so that the floating point stuff can be ditched. As I said, it was a 20 hackup minute job.] COMING SOON: tfishtank. Be the envy of your mac-owning colleagues. */ /* To compile: cc -o tclock tclock.c -lcurses -lm */ #ifndef PI #define PI 3.141592654 #endif #define sign(_x) (_x<0?-1:1) #define ASPECT 2.2 #define ROUND(value) ((int)((value) + 0.5)) #define A2X(angle,radius) ROUND(ASPECT * radius * sin(angle)) #define A2Y(angle,radius) ROUND(radius * cos(angle)) /* Plot a point */ static void plot(int x, int y, char col) { MvAddCh(y, x, (chtype) col); } /* Draw a diagonal(arbitrary) line using Bresenham's alogrithm. */ static void dline(int pair, int from_x, int from_y, int x2, int y2, char ch) { int dx, dy; int ax, ay; int sx, sy; int x, y; int d; if (has_colors()) (void) attrset((attr_t) COLOR_PAIR(pair)); dx = x2 - from_x; dy = y2 - from_y; ax = abs(dx * 2); ay = abs(dy * 2); sx = sign(dx); sy = sign(dy); x = from_x; y = from_y; if (ax > ay) { d = ay - (ax / 2); while (1) { plot(x, y, ch); if (x == x2) return; if (d >= 0) { y += sy; d -= ax; } x += sx; d += ay; } } else { d = ax - (ay / 2); while (1) { plot(x, y, ch); if (y == y2) return; if (d >= 0) { x += sx; d -= ay; } y += sy; d += ax; } } } int main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) { int i, cx, cy; double cr, mradius, hradius, mangle, hangle; double sangle, sradius, hours; int hdx, hdy; int mdx, mdy; int sdx, sdy; int ch; int lastbeep = -1; bool odd = FALSE; time_t tim; struct tm *t; char szChar[10]; char *text; short my_bg = COLOR_BLACK; #if HAVE_GETTIMEOFDAY struct timeval current; double fraction = 0.0; #endif setlocale(LC_ALL, ""); initscr(); noecho(); cbreak(); nodelay(stdscr, TRUE); curs_set(0); if (has_colors()) { start_color(); #if HAVE_USE_DEFAULT_COLORS if (use_default_colors() == OK) my_bg = -1; #endif init_pair(1, COLOR_RED, my_bg); init_pair(2, COLOR_MAGENTA, my_bg); init_pair(3, COLOR_GREEN, my_bg); init_pair(4, COLOR_WHITE, COLOR_BLUE); } #ifdef KEY_RESIZE keypad(stdscr, TRUE); restart: #endif cx = (COLS - 1) / 2; /* 39 */ cy = LINES / 2; /* 12 */ if (cx / ASPECT < cy) cr = cx / ASPECT; else cr = cy; sradius = (5 * cr) / 6; /* 10 */ mradius = (3 * cr) / 4; /* 9 */ hradius = cr / 2; /* 6 */ for (i = 0; i < 12; i++) { sangle = (i + 1) * (2.0 * PI) / 12.0; sdx = A2X(sangle, sradius); sdy = A2Y(sangle, sradius); sprintf(szChar, "%d", i + 1); MvAddStr(cy - sdy, cx + sdx, szChar); } MvAddStr(0, 0, "ASCII Clock by Howard Jones (ha.jones@ic.ac.uk),1994"); sradius = (4 * sradius) / 5; for (;;) { napms(100); tim = time(0); t = localtime(&tim); hours = (t->tm_hour + (t->tm_min / 60.0)); if (hours > 12.0) hours -= 12.0; mangle = ((t->tm_min + (t->tm_sec / 60.0)) * (2 * PI) / 60.0); mdx = A2X(mangle, mradius); mdy = A2Y(mangle, mradius); hangle = ((hours) * (2.0 * PI) / 12.0); hdx = A2X(hangle, hradius); hdy = A2Y(hangle, hradius); #if HAVE_GETTIMEOFDAY gettimeofday(¤t, 0); fraction = ((double) current.tv_usec / 1.0e6); #endif sangle = ((t->tm_sec + fraction) * (2.0 * PI) / 60.0); sdx = A2X(sangle, sradius); sdy = A2Y(sangle, sradius); dline(3, cx, cy, cx + mdx, cy - mdy, '#'); (void) attrset(A_REVERSE); dline(2, cx, cy, cx + hdx, cy - hdy, '.'); attroff(A_REVERSE); if (has_colors()) (void) attrset((attr_t) COLOR_PAIR(1)); dline(1, cx, cy, cx + sdx, cy - sdy, 'O'); if (has_colors()) (void) attrset((attr_t) COLOR_PAIR(0)); text = ctime(&tim); MvPrintw(2, 0, "%.*s", (int) (strlen(text) - 1), text); refresh(); if ((t->tm_sec % 5) == 0 && t->tm_sec != lastbeep) { lastbeep = t->tm_sec; if (has_colors()) { odd = !odd; bkgd((chtype) (odd ? COLOR_PAIR(4) : COLOR_PAIR(0))); } beep(); } if ((ch = getch()) != ERR) { #ifdef KEY_RESIZE if (ch == KEY_RESIZE) { flash(); erase(); wrefresh(curscr); goto restart; } #endif break; } dline(0, cx, cy, cx + hdx, cy - hdy, ' '); dline(0, cx, cy, cx + mdx, cy - mdy, ' '); dline(0, cx, cy, cx + sdx, cy - sdy, ' '); } curs_set(1); endwin(); ExitProgram(EXIT_SUCCESS); } #else int main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED) { printf("This program requires the development header math.h\n"); ExitProgram(EXIT_FAILURE); } #endif
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