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Current Path : /usr/lib64/python2.7/Demo/curses/ |
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Current File : //usr/lib64/python2.7/Demo/curses/tclock.py |
#! /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 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)