From 8478eb9aa0547b4213e03a33078a6b61c1fd89ea Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Fri, 21 Apr 2023 16:29:04 +0200
Subject: [PATCH] Update draw.py

---
 src/ifcopenshell-python/ifcopenshell/draw.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ifcopenshell-python/ifcopenshell/draw.py b/src/ifcopenshell-python/ifcopenshell/draw.py
index 3b3c76d4a0..04f1b3a39d 100644
--- a/src/ifcopenshell-python/ifcopenshell/draw.py
+++ b/src/ifcopenshell-python/ifcopenshell/draw.py
@@ -201,6 +201,10 @@ def main(settings, files, iterators=None, merge_projection=True, progress_functi
         projection, g1 = g1, g1.parentNode
         
         svgfill_context = W.context(W.FILTERED_CARTESIAN_QUOTIENT, 1.0e-3)
+
+        # remove duplicates (without tolerance)
+        ls = list(map(tuple, set(map(frozenset, ls))))
+
         svgfill_context.add(ls)
         
         if settings.merge_cells: