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-:
-eval 'exec perl -wS $0 ${1+"$@"}'
- if 0;
-# POD Documentation
-
-=head1 PROGRAM NAME AND AUTHOR
-
-Timings
-
-=head1 WHAT IT IS
-
-Extract move effect timings from a verbose trace log of the
-presentation engine. Generated is a gnuplot data file, which can be
-displayed issuing a 'gnuplot <filename>' or at a gnuplot prompt, via
-'load <filename>'.
-
-To generate such a verbose log file, rebuild module canvas and module
-slideshow with VERBOSE=t defined in the environment, and debug=t at
-the build tool command line. Then run the presentation, and redirect
-stdout to your log file.
-
-Call me like this: timings.pl < trace-file > gnuplot-target
-
-The whole point in doing this is to detect jerks in shape movements,
-which manifest themselves clearly in the graphed gnuplot output. Note
-that there's some heuristic to recognize when one effect ends and
-another has started: If the time difference between two subsequent
-page flipping times is more than one second, a new effect is assumed
-and a new gnuplot data record is generated.
-
-=head1 REQUIREMENTS
-
-Perl 5
-
-=cut
-
-##############################################################################
-#
-
-print "# Autogenerated by timings.pl, do not change\n",
- "set ylabel \"position\"\n",
- "set xlabel \"time\"\n",
- "plot '-' index 0 using (\$1):(\$2) title \"Move effect position\" with lp\n",
- "#0\n";
-
-$state = 0;
-$last_time = 0;
-$record = 1;
-
-while( <> )
-{
- if( $state == 0 && m|next position will be| )
- {
- ($posX) = m|.*\(([0-9]+.[0-9]+),|;
- ($posY) = m|.*,([0-9]+.[0-9]+)\)|;
- $state = 1;
- }
- elsif( $state == 1 && m|output pos is| )
- {
- $state = 2;
- }
- elsif( $state == 2 && m|flip done at| )
- {
- $state = 0;
- ($flippingTime) = m|.*at ([0-9]+.[0-9]+)|;
-
- if( $last_time != 0 )
- {
- if( $last_time + 1.0 < $flippingTime )
- {
- # new record
- print "\n\n#", $record, "\n";
- $record++;
- }
- }
-
- $last_time = $flippingTime;
- print $flippingTime, " ", $posX, " ", $posY, "\n";
- }
-}