From 72a2eaf82e672e55dfdf521b55f5ca60f82d65ea Mon Sep 17 00:00:00 2001
From: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>
Date: Tue, 3 Feb 2026 12:46:31 -0300
Subject: [PATCH] Small memory optimization for some infills (#12063)

---
 src/libslic3r/Fill/Fill3DHoneycomb.cpp | 2 +-
 src/libslic3r/Fill/FillCrossHatch.cpp  | 2 +-
 src/libslic3r/Fill/FillGyroid.cpp      | 2 +-
 src/libslic3r/Fill/FillLine.cpp        | 2 +-
 src/libslic3r/Fill/FillTpmsD.cpp       | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/libslic3r/Fill/Fill3DHoneycomb.cpp b/src/libslic3r/Fill/Fill3DHoneycomb.cpp
index 6429a81073..5908f854de 100644
--- a/src/libslic3r/Fill/Fill3DHoneycomb.cpp
+++ b/src/libslic3r/Fill/Fill3DHoneycomb.cpp
@@ -277,7 +277,7 @@ void Fill3DHoneycomb::_fill_surface_single(
     multiline_fill(polylines, params, spacing);
 
     // clip pattern to boundaries, chain the clipped polylines
-    polylines = intersection_pl(polylines, to_polygons(expolygon));
+    polylines = intersection_pl(std::move(polylines), to_polygons(expolygon));
 
     if (! polylines.empty()) {
     // Remove very small bits, but be careful to not remove infill lines connecting thin walls!
diff --git a/src/libslic3r/Fill/FillCrossHatch.cpp b/src/libslic3r/Fill/FillCrossHatch.cpp
index 359c4252c4..571095eca4 100644
--- a/src/libslic3r/Fill/FillCrossHatch.cpp
+++ b/src/libslic3r/Fill/FillCrossHatch.cpp
@@ -208,7 +208,7 @@ void FillCrossHatch ::_fill_surface_single(
     // Apply multiline offset if needed
     multiline_fill(polylines, params, spacing);
 
-    polylines = intersection_pl(polylines, to_polygons(expolygon));
+    polylines = intersection_pl(std::move(polylines), to_polygons(expolygon));
 
     // --- remove small remains from gyroid infill
     if (!polylines.empty()) {
diff --git a/src/libslic3r/Fill/FillGyroid.cpp b/src/libslic3r/Fill/FillGyroid.cpp
index caa8459bec..8700c1746e 100644
--- a/src/libslic3r/Fill/FillGyroid.cpp
+++ b/src/libslic3r/Fill/FillGyroid.cpp
@@ -187,7 +187,7 @@ void FillGyroid::_fill_surface_single(
     // Apply multiline offset if needed
     multiline_fill(polylines, params, spacing);
 
-	polylines = intersection_pl(polylines, expolygon);
+	polylines = intersection_pl(std::move(polylines), expolygon);
 
     if (! polylines.empty()) {
 		// Remove very small bits, but be careful to not remove infill lines connecting thin walls!
diff --git a/src/libslic3r/Fill/FillLine.cpp b/src/libslic3r/Fill/FillLine.cpp
index bf97fe006b..5d548e5dbb 100644
--- a/src/libslic3r/Fill/FillLine.cpp
+++ b/src/libslic3r/Fill/FillLine.cpp
@@ -58,7 +58,7 @@ void FillLine::_fill_surface_single(
         pts.push_back(it->a);
         pts.push_back(it->b);
     }
-    Polylines polylines = intersection_pl(polylines_src, offset(expolygon, scale_(0.02)));
+    Polylines polylines = intersection_pl(std::move(polylines_src), offset(expolygon, scale_(0.02)));
 
     // FIXME Vojtech: This is only performed for horizontal lines, not for the vertical lines!
     const float INFILL_OVERLAP_OVER_SPACING = 0.3f;
diff --git a/src/libslic3r/Fill/FillTpmsD.cpp b/src/libslic3r/Fill/FillTpmsD.cpp
index 4750fc55fc..06e0302e8d 100644
--- a/src/libslic3r/Fill/FillTpmsD.cpp
+++ b/src/libslic3r/Fill/FillTpmsD.cpp
@@ -133,7 +133,7 @@ void FillTpmsD::_fill_surface_single(
 	    // Apply multiline offset if needed
     multiline_fill(polylines, params, spacing);
 
-	polylines = intersection_pl(polylines, expolygon);
+	polylines = intersection_pl(std::move(polylines), expolygon);
 
     if (! polylines.empty()) {
 		// Remove very small bits, but be careful to not remove infill lines connecting thin walls!