#N canvas 3 2 602 516 10;
#X obj 14 66 gemwin;
#X obj 14 9 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1
;
#X msg 48 10 create;
#X msg 55 33 destroy;
#X obj 14 93 gemhead;
#X text 170 17 A tutorial on recursion in Gem;
#X text 170 37 (GPL) 2007 Claude Heiland-Allen <claudiusmaximus@goto10.org>
;
#X obj 24 163 r \$0-recurse;
#X obj 68 133 v \$0-depth;
#X obj 14 113 t a b;
#X floatatom 91 96 5 0 0 2 max-depth - -;
#X obj 14 253 t a a;
#X obj 59 253 circle;
#X obj 14 223 separator;
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#X obj 99 383 v \$0-depth;
#X obj 99 403 - 1;
#X obj 99 423 max 0;
#X obj 99 443 v \$0-depth;
#X obj 36 453 spigot;
#X obj 14 383 v \$0-depth;
#X obj 14 423 v \$0-depth;
#X obj 14 403 + 1;
#X obj 184 253 t a a;
#X obj 229 253 circle;
#X obj 206 473 s \$0-recurse;
#X obj 184 353 t b a b;
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#X obj 269 403 - 1;
#X obj 269 423 max 0;
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#X obj 14 183 t a a;
#X obj 184 303 translate 1.5 0 1 0;
#X obj 184 323 scale 0.5;
#X obj 14 323 scale 0.5;
#X obj 14 303 translate 1.5 0 1 0;
#X obj 14 283 rotate -30 0 0 1;
#X obj 184 283 rotate 30 0 0 1;
#X obj 68 113 f 4;
#X text 170 77 The simplest recursive branching structure is one that
splits into two at each branch. Essentially what we are creating is
a circle \, plus two transformed copies of the whole structure \, limited
to a maximums depth of recursion.;
#X text 170 137 Be careful not to increase the max-depth too much:
the splitting at each recursion leads to an exponential increase in
the number of circles to be drawn.;
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