New post-processing script to calculate flow information from G-code

utils/post-processing/flowrate.pl

@@ -0,0 +1,39 @@
+#!/usr/bin/perl -i
+
+#
+# Post-processing script for calculating flow rate for each move
+
+use strict;
+use warnings;
+
+my $E = 0;
+my ($X, $Y);
+while (<>) {
+    if (/^G1 X([0-9.]+) Y([0-9.]+).*? E([0-9.]+)/) {
+        my ($x, $y, $e) = ($1, $2, $3);
+        my $e_length = $e - $E;
+        if ($e_length > 0 && defined $X && defined $Y) {
+            my $dist = sqrt( (($x-$X)**2) + (($y-$Y)**2) );
+            if ($dist > 0) {
+                my $flowrate = sprintf '%.2f', $e_length / $dist;
+                s/(\R+)/ ; XY dist = $dist ; E dist = $e_length ; E\/XY = $flowrate mm\/mm$1/;
+            }
+        }
+        $E = $e;
+        $X = $x;
+        $Y = $y;
+    }
+    if (/^G1 X([0-9.]+) Y([0-9.]+)/) {
+        $X = $1;
+        $Y = $2;
+    }
+    if (/^G1.*? E([0-9.]+)/) {
+        $E = $1;
+    }
+    if (/^G92 E0/) {
+        $E = 0;
+    }
+    print;
+}
+
+__END__