Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

LineDraw Japh

by benn (Priest)
on Sep 01, 2003 at 15:07 UTC ( #288144=obfuscated: print w/ replies, xml ) Need Help??

Not terribly good ASCII art, but another fun principle that I don't think I've seen used before (though I'm sure I'll be corrected if wrong :)). All analysis and suggestions for improvement / golfing most welcome.
for(2424832,201326592,203754496,2427941,50987779,117900295,151259139, 134613253,51317003,152306448,101778958,152371989,51905302,68813593,688 +14358, 152896285,102827550,153223970){($x,$y,$v,$w)=unpack"c*",pack"l",$_;$e= +$v-$x; $g=$w-$y;$h=abs$e;$k=abs$g;$d=$h>$k;for(0..(($d)?$h:$k)){$f+=$d?$g/$e: +$e/$g; $f1=$f;int$f&&do{$y+=$d?$g>0?1:-1:0;$x+=$d?0:$e>0?1:-1;$f+=$f>0?-1:1}; $c[$y]||=' 'x 60;substr($c[$y],$x+1,1)=abs$f1>=1?$f1>0?"\\":"/":$d?"-" +:"|"; $d?($x+=$e>0?1:-1):($y+=$g>0?1:-1);}};$"="\n";print"@c";
Cheers, Ben.

update Removed all those brackets left over from starting life as a C coder :)
update Stripped a few spare vars etc.

Comment on LineDraw Japh
Download Code
Replies are listed 'Best First'.
Re: LineDraw Japh
by Roger (Parson) on Sep 04, 2003 at 05:32 UTC
    The straight line drawing algorithm. Each number in the list holds information of x,y coordinates and gradient information. The format is x1,y1,x2,y2. I have modified this program to draw a little house ... :-D

    for (589840,117506056,134225920,671555840,534280,1058576,654911248,151718157,269160461,168496907,168627981){($x,$y,$v,$w)=unpack"c*",pack"l",$_;$e=$v-$x;$g=$w-$y;$h=abs$e;$k=abs$g;$d=$h>$k;for(0..(($d)?$h:$k)){$f+=$d?$g/$e:$e/$g;$f1=$f;int$f&&do{$y+=$d?$g>0?1:-1:0;$x+=$d?0:$e>0?1:-1;$f+=$f>0?-1:1};$c$y||=' 'x 60;substr($c$y,$x+1,1)=abs$f1>=1?$f1>0?"\\":"/":$d?"-":"|"; $d?($x+=$e>0?1:-1):($y+=$g>0?1:-1);}};$"="\n";print"@c";
      Opps, the code I posted earlier confused the HTML syntax. Here's the complete code reposted...

      for (589840, 117506056, 134225920, 671555840, 534280, 1058576, 654911248, 151718157, 269160461, 168496907, 168627981) { ($x, $y, $v, $w) = unpack "c*", pack "l", $_; $e = $v - $x; $g = $w - $y; $h = abs $e; $k = abs $g; $d = $h > $k; for (0..(($d) ? $h : $k)) { $f += $d ? $g/$e : $e/$g; $f1 = $f; int $f && do { $y += $d ? ($g > 0 ? 1 : -1) : 0; $x += $d ? 0 : ($e > 0 ? 1 : -1); $f += $f > 0 ? -1 : 1 }; $c[$y] ||= ' ' x 60; substr($c[$y],$x+1,1) = abs $f1 >= 1 ? $f1 > 0 ? "\\" : "/" : $d ? "-" : "|"; $d ? ($x += $e>0 ? 1 : -1) : ($y += $g>0 ? 1 : -1); } } $" = "\n"; print"@c\n"; __END__ The following is the picture data in heximal format, Each number is x1,y1,x2,y2. 0x00090010, 0x07010008, 0x08002000, 0x28072100, 0x00082708, 0x00102710, 0x27092710, 0x090B090D, 0x100B100D, 0x0A0B0F0B, 0x0A0D0F0D

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: obfuscated [id://288144]
Approved by TomDLux
Front-paged by TomDLux
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (10)
As of 2015-07-30 09:37 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (270 votes), past polls