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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";

In reply to Re: LineDraw Japh by Roger
in thread LineDraw Japh by benn

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