批处理指针时钟

michael8111

源地址：http://tieba.baidu.com/f?kz=673179640，效果不是很好，但还能看，请谅解！

代码如下：

@echo off 
setlocal enabledelayedexpansion 
color 9f 
title 批处理时钟 by liuzhaonan11 
call:main 
pause 
exit /b 
:main 
set /a "height=40, width=40, lines=height/2+1, cols=width+1" 
mode con lines=!lines! cols=!cols! 
set /a "centerx=height/2+1, centery=width/2-1" 
set /a "lengthh=12,lengthm=16,lengths=18,radius=18" 
call:math 
:loop 
setlocal 
set "timeh=!time:~0,2!" & set "timem=!time:~3,2!" & set "times=!time:~6,2!" 
for %%i in (h,m,s) do if !time%%i! lss 10 set "time%%i=!time%%i:~-1!" 
set /a "timeh=timeh%%12" 
set /a "angleh=30*timeh+timem/12*6, anglem=6*timem, angles=6*times" 
call:cleartable table !height! !width! 
for %%i in (h,m,s) do ( 
call:cleartable table%%i !height! !width! 
set /a "x%%i=centerx+sin!angle%%i!, y%%i=centery+cos!angle%%i!" 
call:drawline table%%i !centerx! !centery! !x%%i! !y%%i! 
call:add table%%i !length%%i! table 
) 
for /l %%i in (0,30,360) do ( 
set /a "x=centerx+(sin%%i*radius)/100, y=centery+(cos%%i*radius)/100" 
set "table_!x!_!y!=1" 
) 
call:table2graph table graph 
set /a "gctc=centerx, gctl=graph.h-(centery-1)/2" & set "graph_!gctl!_!gctc!=" 
call:graph2string graph string 
cls 
call:print string 
(echo         !date! !time:~0,-3!) 
endlocal 
goto loop 
exit /b 
 
:math 
set /a "sin0=0, sin6=11, sin12=21, sin18=31, sin24=41, sin30=50, sin36=59, sin42=67, sin48=74, sin54=81, sin60=87, sin66=91, sin72=95, sin78=98, sin84=99, sin90=100" 
for /l %%i in (0, 6, 90) do ( 
set /a "a1=180-%%i, a2=180+%%i, a3=360-%%i" 
set /a "sin!a1!=!sin%%i!, sin!a2!=-!sin%%i!, sin!a3!=-!sin%%i!" 
) 
for /l %%i in (0, 6, 360) do ( 
set /a "a4=%%i-90+360, a4=a4%%360" 
set /a "cos!a4!=!sin%%i!" 
) 
exit /b 
:add 
REM add table1 length table2 
for /l %%y in (1,1,!%~1.h!) do for /l %%x in (1,1,!%~1.w!) do ( 
if "!%~1_%%x_%%y!"=="1" ( 
set /a "i=%~2*%~2-(%%x-!centerx!)*(%%x-!centerx!)-(%%y-!centery!)*(%%y-!centery!)" 
if !i! geq 0 ( 
set "%~3_%%x_%%y=1" 
) 
) 
) 
exit /b 
:cleartable 
REM cleartable table height width 
set /a "%~1.h=%~2, %~1.w=%~3" 
::- for /l %%y in (1,1,!%~1.h!) do for /l %%x in (1,1,!%~1.w!) do set "%~1_%%x_%%y=" 
exit /b 
:print 
for /l %%l in (1,1,!%~1.n!) do (echo:!%~1_%%l!) 
exit /b 
:graph2string 
set /a "%~2.n=%~1.h" 
for /l %%l in (1,1,!%~1.h!) do ( 
set "%~2_%%l=" 
for /l %%c in (1,1,!%~1.w!) do ( 
if "!%~1_%%l_%%c!"=="" ( set "%~2_%%l=!%~2_%%l! " 
) else set "%~2_%%l=!%~2_%%l!!%~1_%%l_%%c!" 
) 
) 
exit /b 
:table2graph 
set /a "%~2.w=%~1.w, %~2.h=%~1.h/2" 
for /l %%l in (1,1,!%~2.h!) do ( REM 每一行 
set /a "y1=2*(!%~2.h!-%%l)+2, y2=2*(!%~2.h!-%%l)+1" 
for /f "delims=" %%i in ("!y1!") do for /f "delims=" %%j in ("!y2!") do ( 
for /l %%c in (1,1,!%~2.w!) do ( REM 每一列 
if not "!%~1_%%c_%%i!"=="1" ( 
if not "!%~1_%%c_%%j!"=="1" ( 
set "%~2_%%l_%%c=" 
) else ( 
set "%~2_%%l_%%c=." 
) 
) else ( 
if not "!%~1_%%c_%%j!"=="1" ( 
set "%~2_%%l_%%c='" 
) else ( 
set "%~2_%%l_%%c=:" 
) 
) 
) 
) 
) 
exit /b 
:drawline 
REM drawline table x1 y1 x2 y2 
set /a "x1=%~2, y1=%~3, x2=%~4, y2=!%~5" 
set /a "rx=x1-x2" & set /a "rx=!rx:-=!" 
set /a "ry=y1-y2" & set /a "ry=!ry:-=!" 
if !rx! geq !ry! (  REM 比较平 
if !x1! lss !x2! for /l %%i in (!x1!,1,!x2!) do (  REM 点1在左边 
set /a "ideal=(%y1%*(%x2%-%%i)+%y2%*(%%i-%x1%))/(%x2%-%x1%)" 
set "%~1_%%i_!ideal!=1" 
) else if !x2! lss !x1! for /l %%i in (!x2!,1,!x1!) do (  REM 点2在左边 
set /a "ideal=(%y2%*(%x1%-%%i)+%y1%*(%%i-%x2%))/(%x1%-%x2%)" 
set "%~1_%%i_!ideal!=1" 
) else (  REM 一个点 
set "%~1_!x1!_!y1!=1" 
) 
) else (  REM 比较斜 
if !y1! lss !y2! for /l %%i in (!y1!,1,!y2!) do (  REM 点1在下边 
set /a "ideal=(%x1%*(%y2%-%%i)+%x2%*(%%i-%y1%))/(%y2%-%y1%)" 
set "%~1_!ideal!_%%i=1" 
) else if !y2! lss !y1! for /l %%i in (!y2!,1,!y1!) do (  REM 点2在下边 
set /a "ideal=(%x2%*(%y1%-%%i)+%x1%*(%%i-%y2%))/(%y1%-%y2%)" 
set "%~1_!ideal!_%%i=1" 
) else (  REM 一个点 
set "%~1_!x1!_!y1!=1" 
) 
) 
exit /bCOPY

michael8111

求助：如何把这段代码中指针变直？这里的指针总是弯的

523066680

我记得指针时钟有人发过呀!#@￥@#￥……

523066680

哈哈 其实这个已经不弯了。两点之间构成一直线，而这个点太粗啦~

像这个：
000
      000
             000

上次qzwqzw弄了个改注册表之类的可以控制 字符大小，那个顶~

neorobin

如 4 楼所述, 基于显示硬件的光栅式显示原理, 除了水平方向和垂直方向的直线外, 在显示硬件上是没有绝对的直线的, 非水平和垂直方向的直线只能用水平线段和垂直线段的组合构成折线来近似显现, 目前我所知 直线最好的画法 是 Bresenham 算法, 请参考
http://cg.sjtu.edu.cn/lecture_site/chap2/mainframe212.htm