From 8d32d29016a96ae3e9fcaec3fc9d261bff39dd22 Mon Sep 17 00:00:00 2001
From: "jiangkai.zhao" <jiangkai.zhao@bambulab.com>
Date: Tue, 25 Feb 2025 15:51:10 +0800
Subject: [PATCH] Fix: crashes when slicing small objects with wipe_tower.

jira: STUDIO-10572
Change-Id: I37312673a87e542120ee7282c22f80e16c894cd9
---
 src/libslic3r/GCode/WipeTower.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libslic3r/GCode/WipeTower.hpp b/src/libslic3r/GCode/WipeTower.hpp
index e14f61391..d4c802140 100644
--- a/src/libslic3r/GCode/WipeTower.hpp
+++ b/src/libslic3r/GCode/WipeTower.hpp
@@ -188,6 +188,7 @@ public:
     float get_depth() const { return m_wipe_tower_depth; }
     float get_brim_width() const { return m_wipe_tower_brim_width_real; }
     BoundingBoxf get_bbx() const {
+        if (m_outer_wall.empty()) return BoundingBoxf({Vec2d(0,0)});
         BoundingBox  box = get_extents(m_outer_wall.begin()->second);
         BoundingBoxf res = BoundingBoxf(unscale(box.min), unscale(box.max));
         res.translate(m_rib_offset.cast<double>());