From 9f9f544bb976910c02f3f229312f0611adfc2b1e Mon Sep 17 00:00:00 2001
From: supermerill <merill@free.fr>
Date: Sun, 26 Sep 2021 23:38:34 +0200
Subject: [PATCH] fix seam placer when each object has its own layers use
 layer_z instead of layer_id

---
 src/libslic3r/GCode/SeamPlacer.cpp | 10 +++++-----
 src/libslic3r/GCode/SeamPlacer.hpp |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/src/libslic3r/GCode/SeamPlacer.cpp b/src/libslic3r/GCode/SeamPlacer.cpp
index 07c4b04e8..3425de4a1 100644
--- a/src/libslic3r/GCode/SeamPlacer.cpp
+++ b/src/libslic3r/GCode/SeamPlacer.cpp
@@ -863,14 +863,14 @@ void SeamPlacer::apply_custom_seam(const Polygon& polygon, size_t po_idx,
 
 
 
-std::optional<Point> SeamHistory::get_last_seam(const PrintObject* po, size_t layer_id, const BoundingBox& island_bb)
+std::optional<Point> SeamHistory::get_last_seam(const PrintObject* po, coord_t layer_z, const BoundingBox& island_bb)
 {
-    assert(layer_id >= m_layer_id);
-    if (layer_id > m_layer_id) {
+    assert(layer_z >= m_layer_z);
+    if (layer_z > m_layer_z) {
         // Get seam was called for different layer than last time.
         m_data_last_layer = m_data_this_layer;
         m_data_this_layer.clear();
-        m_layer_id = layer_id;
+        m_layer_z = layer_z;
     }
 
 
@@ -918,7 +918,7 @@ void SeamHistory::add_seam(const PrintObject* po, const Point& pos, const Boundi
 
 void SeamHistory::clear()
 {
-    m_layer_id = 0;
+    m_layer_z = 0;
     m_data_last_layer.clear();
     m_data_this_layer.clear();
 }
diff --git a/src/libslic3r/GCode/SeamPlacer.hpp b/src/libslic3r/GCode/SeamPlacer.hpp
index f7e1b1589..d7b1cf0a7 100644
--- a/src/libslic3r/GCode/SeamPlacer.hpp
+++ b/src/libslic3r/GCode/SeamPlacer.hpp
@@ -20,7 +20,7 @@ namespace EdgeGrid { class Grid; }
 class SeamHistory {
 public:
     SeamHistory() { clear(); }
-    std::optional<Point> get_last_seam(const PrintObject* po, size_t layer_id, const BoundingBox& island_bb);
+    std::optional<Point> get_last_seam(const PrintObject* po, coord_t layer_z, const BoundingBox& island_bb);
     void add_seam(const PrintObject* po, const Point& pos, const BoundingBox& island_bb);
     void clear();
 
@@ -32,7 +32,7 @@ private:
 
     std::map<const PrintObject*, std::vector<SeamPoint>> m_data_last_layer;
     std::map<const PrintObject*, std::vector<SeamPoint>> m_data_this_layer;
-    size_t m_layer_id;
+    coord_t m_layer_z;
 };