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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //usr/share/ghostscript/lib/lines.ps

%!
% Copyright (C) 2001-2019 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
% CA 94945, U.S.A., +1(415)492-9861, for further information.
%

% Test line rendering (stroke).

% Exercise the miter limit.  The left column of lines should bevel at
% 90 degrees, the right column at 60 degrees.

gsave
1.8 setlinewidth
0 setgray
15 15 scale
-5 5 translate
[1.415 2.0]
 { setmiterlimit 12 0 translate 0 0 moveto
   10 30 360
    { gsave 5 0 rlineto rotate 2.5 0 rlineto
      gsave 0 setlinewidth 1 0 0 setrgbcolor stroke grestore
      strokepath 0 setlinewidth stroke
      grestore
      0 4 rmoveto
    } for
 } forall

showpage
grestore

% Exercise all the combinations of cap and join styles
% for one-line, two-line, and closed paths.

gsave

/drawlines {
gsave
2.0 setmiterlimit
2.0 setlinewidth
6 6 scale
5 20 translate
{0 1 2}				% line cap
 { setlinecap gsave
   {0 1 2}			% line join
    { setlinejoin gsave
      { {currentpoint lineto}
        {3 7 lineto}
        {3 7 lineto 5 1 lineto}
        {3 7 lineto 6 3 lineto closepath}
      }
       { gsave 0 0 moveto exec
         gsave stroke grestore
         0.5 setlinewidth 1 0 0 setrgbcolor stroke
         grestore 8 0 translate
       } forall
      grestore 35 0 translate
    } forall
   grestore 0 20 translate
 } forall
grestore
} def
/xflip
 { 8.5 72 mul 0 translate -1 1 scale
 } def
/rot90
 { 90 rotate 0 -9.75 72 mul translate
 } def
/rot180
 { rot90 rot90
 } def
/rot270
 { rot180 rot90
 } def

drawlines showpage
gsave xflip drawlines grestore showpage
gsave rot90 drawlines grestore showpage
gsave rot90 xflip drawlines grestore showpage
gsave drawlines rot180 showpage
gsave rot180 xflip drawlines grestore showpage
gsave rot270 drawlines grestore showpage
gsave rot270 xflip drawlines grestore showpage
grestore

% Here are some boundary conditions, contributed by Mark Rawling.

gsave
1 setlinecap
2.6 setmiterlimit
3.0 setlinewidth

5 5 scale
10 20 translate

% [ 0.5 sqrt dup dup dup neg exch 0 0 ] concat	% 45 rotate

{0 1 2}                        % line join
{
    setlinejoin gsave
    0 0 moveto 0 10 lineto 10 0 lineto gsave stroke grestore
    15 0 translate
    0 0 moveto 0 10 lineto 10 20 lineto gsave stroke grestore
    15 0 translate
    10 0 moveto 10 10 lineto 0 20 lineto gsave stroke grestore
    15 0 translate
    10 0 moveto 10 10 lineto 0 0 lineto gsave stroke grestore
    grestore
    gsave
    0 20 translate
    0 20 moveto 0 10 lineto 10 20 lineto gsave stroke grestore
    15 0 translate
    0 20 moveto 0 10 lineto 10 0 lineto gsave stroke grestore
    15 0 translate
    10 20 moveto 10 10 lineto 0 0 lineto gsave stroke grestore
    15 0 translate
    10 20 moveto 10 10 lineto 0 20 lineto gsave stroke grestore
    grestore 60 0 translate
} forall

showpage
grestore

% Test narrow lines at a variety of angles.

gsave

/rad 120 def
/ray { gsave rotate 0 0 moveto rad 0 rlineto stroke grestore } def
/star
 { newpath gsave
   gsave 0.5 setgray 0 0 rad 0 360 arc stroke grestore
   0 90 359
    { rotate
      0 3 14 { ray } for
      15 15 89 { ray } for
    } for
   grestore
 } def

0 setgray
150 150 translate
[ [ 0 0.5 1 ] [ 1.5 2 2.5 ] [ 3 3.5 4 ] ]
 { gsave
    { setlinewidth star
      250 0 translate
    } forall
   grestore 0 250 translate
 } forall

grestore showpage

% End

quit

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