From f7c03db752e047b854a8697c77191bd4765bfcf4 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Sun, 31 Mar 2024 11:25:56 +0200
Subject: [PATCH] #4450 don't fail on empty bbox in prefiltering

---
 src/serializers/SvgSerializer.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/serializers/SvgSerializer.h b/src/serializers/SvgSerializer.h
index b5e8e7c98e..2940f5bc22 100644
--- a/src/serializers/SvgSerializer.h
+++ b/src/serializers/SvgSerializer.h
@@ -400,6 +400,13 @@ namespace {
 			Bnd_Box box;
 			BRepBndLib::AddClose(s, box);
 
+			if (box.IsVoid()) {
+				// false or true, it doesn't really matter, just don't
+				// proceed because asking for a corner of a void box
+				// throws an exception.
+				return false;
+			}
+
 			auto lower = large_ortho_faces_.lower_bound(0.);
 			auto upper = large_ortho_faces_.upper_bound(min_d);