From 9cbfe8f5ef6f24ea88f8cdb74dcf866bfd98028d Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Mon, 26 Aug 2019 09:55:00 +0200
Subject: [PATCH] Make sure the "avoid crossing perimeters" class is resetted
 at the start of G-code export.

---
 src/libslic3r/GCode.cpp | 1 +
 src/libslic3r/GCode.hpp | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 5ff8c4dce..de43bfaec 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1012,6 +1012,7 @@ void GCode::_do_export(Print &print, FILE *file)
     _write(file, this->preamble());
 
     // Initialize a motion planner for object-to-object travel moves.
+    m_avoid_crossing_perimeters.reset();
     if (print.config().avoid_crossing_perimeters.value) {
         m_avoid_crossing_perimeters.init_external_mp(print);
         print.throw_if_canceled();
diff --git a/src/libslic3r/GCode.hpp b/src/libslic3r/GCode.hpp
index 4baf000f3..83d61c483 100644
--- a/src/libslic3r/GCode.hpp
+++ b/src/libslic3r/GCode.hpp
@@ -45,6 +45,7 @@ public:
     AvoidCrossingPerimeters() : use_external_mp(false), use_external_mp_once(false), disable_once(true) {}
     ~AvoidCrossingPerimeters() {}
 
+    void reset() { m_external_mp.reset(); m_layer_mp.reset(); }
 	void init_external_mp(const Print &print);
     void init_layer_mp(const ExPolygons &islands) { m_layer_mp = Slic3r::make_unique<MotionPlanner>(islands); }