From 8440a10b9e7a9e8fec53a90d57959380fd8753c5 Mon Sep 17 00:00:00 2001
From: Arksine <arksine.code@gmail.com>
Date: Sat, 26 Sep 2020 11:43:16 -0400
Subject: [PATCH] extract_metadata: attempt to parse object height from
 PrusaSlicer comments

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
---
 scripts/extract_metadata.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scripts/extract_metadata.py b/scripts/extract_metadata.py
index ebce8dc..859d96a 100644
--- a/scripts/extract_metadata.py
+++ b/scripts/extract_metadata.py
@@ -136,6 +136,15 @@ class PrusaSlicer(BaseSlicer):
             r"; layer_height = (\d+\.?\d*)", self.footer_data)
 
     def parse_object_height(self):
+        matches = re.findall(
+            r";BEFORE_LAYER_CHANGE\n(?:.*\n)?;(\d+\.?\d*)", self.footer_data)
+        if matches:
+            try:
+                matches = [float(m) for m in matches]
+            except Exception:
+                pass
+            else:
+                return max(matches)
         return self._parse_max_float(r"G1\sZ\d+\.\d*\sF", self.footer_data)
 
     def parse_filament_total(self):