From 99a08efc9c983f1e9ac5efe2375c3a0045cad1a8 Mon Sep 17 00:00:00 2001
From: Filip Sykala - NTB T15p <Filip.Sykala@Prusa3D.cz>
Date: Tue, 27 Feb 2024 13:51:16 +0100
Subject: [PATCH] Disallow import of 3mf without mesh, which are not produced
 by PrusaSlic3r

---
 src/libslic3r/Format/3mf.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp
index 0f9c3858ad..e84ee5b4d5 100644
--- a/src/libslic3r/Format/3mf.cpp
+++ b/src/libslic3r/Format/3mf.cpp
@@ -1000,8 +1000,12 @@ namespace Slic3r {
             }
         }
 
-//        // fixes the min z of the model if negative
-//        model.adjust_min_z();
+        // We support our 3mf contains only configuration without mesh,
+        // others MUST contain mesh (triangles and vertices).
+        if (!m_prusaslicer_generator_version.has_value() && model.objects.empty()) {
+            const std::string msg = (boost::format(_u8L("3mf File (\"%1%\") do not contain valid mesh.")) % filename).str();
+            throw Slic3r::RuntimeError(msg);
+        }
 
         return true;
     }