1 files changed, 53 insertions, 0 deletions
diff --git a/utils/post-processing/decimate.pl b/utils/post-processing/decimate.pl
new file mode 100755
index 000000000..9e2938c5f
--- /dev/null
+++ b/utils/post-processing/decimate.pl
@@ -0,0 +1,53 @@
+#!/usr/bin/perl -i~
+
+use strict;
+use warnings;
+
+my %lastpos = (X => 10000, Y => 10000, Z => 10000, E => 10000, F => 10000);
+my %pos = (X => 0, Y => 0, Z => 0, E => 0, F => 0);
+
+my $mindist = 0.33;
+
+my $mindistz = 0.005;
+
+my $mindistsq = $mindist * $mindist;
+
+sub dist {
+	my $sq = 0;
+	for (qw/X Y Z E/) {
+		$sq += ($pos{$_} - $lastpos{$_}) ** 2;
+	}
+	return $sq;
+}
+
+while (<>) {
+	if (m#\bG[01]\b#) {
+		while (m#([XYZEF])(\d+(\.\d+)?)#gi) {
+			$pos{uc $1} = $2;
+		}
+		if (
+				(
+					/X/ &&
+					/Y/ &&
+					(dist() >= $mindistsq)
+				) ||
+				(abs($pos{Z} - $lastpos{Z}) > $mindistz) ||
+				(!/X/ || !/Y/)
+			) {
+			print;
+			%lastpos = %pos;
+		}
+		elsif (($pos{F} - $lastpos{F}) != 0) {
+			printf "G1 F%s\n", $pos{F};
+			$lastpos{F} = $pos{F};
+		}
+	}
+	else {
+		if (m#\bG92\b#) {
+			while (m#([XYZEF])(\d+(\.\d+)?)#gi) {
+				$lastpos{uc $1} = $2;
+			}
+		}
+		print;
+	}
+}