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#!/usr/bin/env python
#
# $Id$
#
# 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 algorithm
def 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 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
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 1:
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)
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