#!/usr/bin/env python## $Id: tclock.py 46626 2006-06-03 23:07:21Z andrew.kuchling $## From tclock.c, Copyright Howard Jones <ha.jones@ic.ac.uk>, September 1994. from math import *import curses, time ASPECT = 2.2 def sign(_x):    if _x < 0: return -1    return 1 def A2XY(angle, radius):    return (int(round(ASPECT * radius * sin(angle))),            int(round(radius * cos(angle)))) def plot(x, y, col):    stdscr.addch(y, x, col) # draw a diagonal line using Bresenham's algorithmdef dline(pair, from_x, from_y, x2, y2, ch):    if curses.has_colors():        stdscr.attrset(curses.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 True:            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 True:            plot(x, y, ch)            if y == y2:                return             if d >= 0:                x += sx                d -= ay            y += sy            d += ax def main(win):    global stdscr    stdscr = win     lastbeep = -1    my_bg = curses.COLOR_BLACK     stdscr.nodelay(1)    stdscr.timeout(0)#    curses.curs_set(0)    if curses.has_colors():        curses.init_pair(1, curses.COLOR_RED, my_bg)        curses.init_pair(2, curses.COLOR_MAGENTA, my_bg)        curses.init_pair(3, curses.COLOR_GREEN, my_bg)     cx = (curses.COLS - 1) // 2    cy = curses.LINES // 2    ch = min( cy-1, int(cx // ASPECT) - 1)    mradius = (3 * ch) // 4    hradius = ch // 2    sradius = 5 * ch // 6     for i in range(0, 12):        sangle = (i + 1) * 2.0 * pi / 12.0        sdx, sdy = A2XY(sangle, sradius)         stdscr.addstr(cy - sdy, cx + sdx, "%d" % (i + 1))     stdscr.addstr(0, 0,                  "ASCII Clock by Howard Jones <ha.jones@ic.ac.uk>, 1994")     sradius = max(sradius-4, 8)     while True:        curses.napms(1000)         tim = time.time()        t = time.localtime(tim)         hours = t[3] + t[4] / 60.0        if hours > 12.0:            hours -= 12.0         mangle = t[4] * 2 * pi / 60.0        mdx, mdy = A2XY(mangle, mradius)         hangle = hours * 2 * pi / 12.0        hdx, hdy = A2XY(hangle, hradius)         sangle = t[5] * 2 * pi / 60.0        sdx, sdy = A2XY(sangle, sradius)         dline(3, cx, cy, cx + mdx, cy - mdy, ord('#'))         stdscr.attrset(curses.A_REVERSE)        dline(2, cx, cy, cx + hdx, cy - hdy, ord('.'))        stdscr.attroff(curses.A_REVERSE)         if curses.has_colors():            stdscr.attrset(curses.color_pair(1))         plot(cx + sdx, cy - sdy, ord('O'))         if curses.has_colors():            stdscr.attrset(curses.color_pair(0))         stdscr.addstr(curses.LINES - 2, 0, time.ctime(tim))        stdscr.refresh()        if (t[5] % 5) == 0 and t[5] != lastbeep:            lastbeep = t[5]            curses.beep()         ch = stdscr.getch()        if ch == ord('q'):            return 0         plot(cx + sdx, cy - sdy, ord(' '))        dline(0, cx, cy, cx + hdx, cy - hdy, ord(' '))        dline(0, cx, cy, cx + mdx, cy - mdy, ord(' ')) curses.wrapper(main)