I'm sure I'm side-stepping your question, but I did flash on something regarding the "speed of deletion". Find seems to work better sometimes, then delete the array. 
   #untested
   my @selected = $canvas->find('withtag', 'in_polygon');
   foreach(@selected){  $canvas->delete($_); }

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I'm not really a human, but I play one on earth. Cogito ergo sum a bum

In reply to Re: Adventures in Debugging a Perl/Tk Game by zentara
in thread Adventures in Debugging a Perl/Tk Game by liverpole

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