Add Chromium-only Blender WebEngine parity work

blender-5.2.0/scripts/freestyle/styles/external_contour.py

@@ -0,0 +1,33 @@
+# SPDX-FileCopyrightText: 2008-2023 Blender Authors
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+#  Author   : Stephane Grabli
+#  Date     : 04/08/2005
+#  Purpose  : Draws the external contour of the scene
+
+from freestyle.chainingiterators import ChainPredicateIterator
+from freestyle.predicates import (
+    AndUP1D,
+    ExternalContourUP1D,
+    NotUP1D,
+    QuantitativeInvisibilityUP1D,
+    TrueBP1D,
+    TrueUP1D,
+)
+from freestyle.shaders import (
+    ConstantColorShader,
+    ConstantThicknessShader,
+)
+from freestyle.types import Operators
+
+
+upred = AndUP1D(QuantitativeInvisibilityUP1D(0), ExternalContourUP1D())
+Operators.select(upred)
+bpred = TrueBP1D()
+Operators.bidirectional_chain(ChainPredicateIterator(upred, bpred), NotUP1D(upred))
+shaders_list = [
+    ConstantThicknessShader(3),
+    ConstantColorShader(0.0, 0.0, 0.0, 1),
+]
+Operators.create(TrueUP1D(), shaders_list)