From ef90d48e6e2f6ce5963429fd3b3c30d76351546b Mon Sep 17 00:00:00 2001
From: Noisyfox <timemanager.rick@gmail.com>
Date: Thu, 1 Feb 2024 22:38:45 +0800
Subject: [PATCH] Better way of storing the global scarf state

---
 src/libslic3r/GCode.cpp      |  8 +-------
 src/libslic3r/PrintApply.cpp | 13 +++++++++++++
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index a5af3db3574..3a1fdb02a13 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1913,14 +1913,8 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
 {
     PROFILE_FUNC();
 
-    PrintConfig print_config(print.config());
-    {
-        const auto o         = print.objects();
-        print_config.has_scarf_joint_seam.value = std::any_of(o.begin(), o.end(),
-                                                 [](const PrintObject* obj) { return obj->config().seam_slope_enabled; });
-    }
     // modifies m_silent_time_estimator_enabled
-    DoExport::init_gcode_processor(print_config, m_processor, m_silent_time_estimator_enabled);
+    DoExport::init_gcode_processor(print.config(), m_processor, m_silent_time_estimator_enabled);
 
     const bool is_bbl_printers = print.is_BBL_printer();
     m_calib_config.clear();
diff --git a/src/libslic3r/PrintApply.cpp b/src/libslic3r/PrintApply.cpp
index 76598cca220..2b81518c3a1 100644
--- a/src/libslic3r/PrintApply.cpp
+++ b/src/libslic3r/PrintApply.cpp
@@ -1041,6 +1041,19 @@ Print::ApplyStatus Print::apply(const Model &model, DynamicPrintConfig new_full_
     else
         m_support_used = false;
 
+    {
+        const auto& o = model.objects;
+        const bool has_scarf_joint_seam = std::any_of(o.begin(), o.end(), [&new_full_config](ModelObject* obj) {
+            return obj->get_config_value<ConfigOptionBool>(new_full_config, "seam_slope_enabled")->value;
+        });
+
+        if (has_scarf_joint_seam) {
+            new_full_config.set("has_scarf_joint_seam", true);
+        }
+
+        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ", has_scarf_joint_seam:" << has_scarf_joint_seam;
+    }
+
     // Find modified keys of the various configs. Resolve overrides extruder retract values by filament profiles.
     DynamicPrintConfig   filament_overrides;
     //BBS: add plate index