From 3776b7ed80fcdf17f6bbae7ea3e8edb84c83fe81 Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Mon, 5 Nov 2018 20:07:54 +0100
Subject: [PATCH] Bugfix: error in porting of SupportMaterial

src/libslic3r/SupportMaterial.cpp:770:17: warning: logical not is only applied to the left hand side of this comparison [-Wlogical-not-parentheses]
            if (!z > top_el.first) // next unless $z > $top_z;
                ^  ~
src/libslic3r/SupportMaterial.cpp:770:17: note: add parentheses after the '!' to evaluate the comparison first
            if (!z > top_el.first) // next unless $z > $top_z;
                ^
                 (               )
src/libslic3r/SupportMaterial.cpp:770:17: note: add parentheses around left hand side expression to silence this warning
            if (!z > top_el.first) // next unless $z > $top_z;
                ^
                ( )
1 warning generated.
---
 xs/src/libslic3r/SupportMaterial.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xs/src/libslic3r/SupportMaterial.cpp b/xs/src/libslic3r/SupportMaterial.cpp
index be97c06b4..ce493e84d 100644
--- a/xs/src/libslic3r/SupportMaterial.cpp
+++ b/xs/src/libslic3r/SupportMaterial.cpp
@@ -767,7 +767,7 @@ SupportMaterial::generate_bottom_interface_layers(const vector<coordf_t> &suppor
         // surface.
         for (int layer_id = 0; layer_id < support_z.size(); layer_id++) {
             auto z = support_z[layer_id];
-            if (!z > top_el.first) // next unless $z > $top_z;
+            if (z <= top_el.first) // next unless $z > $top_z;
                 continue;
 
             if (base.count(layer_id) > 0) {