Add test

src/ifcopenshell-python/test/geom/polyhedral_shapes.py

@@ -0,0 +1,54 @@
+import collections
+import ifcopenshell
+import ifcopenshell.geom
+
+import pytest
+
+from test.bootstrap import file
+
+
+@pytest.mark.parametrize("file", ["geom/polygonal-face-tessellation.ifc"], indirect=True)
+def test_polyhedral_setting(file):
+    s = ifcopenshell.geom.settings()
+    # default is triangle mesh
+    assert s.get("triangulation-type") == ifcopenshell.ifcopenshell_wrapper.TRIANGLE_MESH
+    s = ifcopenshell.geom.settings(TRIANGULATION_TYPE=ifcopenshell.ifcopenshell_wrapper.POLYHEDRON_WITHOUT_HOLES)
+    obj = ifcopenshell.geom.create_shape(s, file[30])
+    # outer:
+    #   - top
+    #   - left
+    #   - bottom
+    #   - right
+    #   - back;
+    # inner:
+    #   - top
+    #   - left
+    #   - bottom
+    #   - right
+    #   - back;
+    # front:
+    #   - 8 triangles
+    # --------------------- +
+    #     18 facets
+    assert len(obj.geometry.faces) == 18
+    s = ifcopenshell.geom.settings(TRIANGULATION_TYPE=ifcopenshell.ifcopenshell_wrapper.POLYHEDRON_WITH_HOLES)
+    obj = ifcopenshell.geom.create_shape(s, file[30])
+    # outer:
+    #   - top
+    #   - left
+    #   - bottom
+    #   - right
+    #   - back;
+    # inner:
+    #   - top
+    #   - left
+    #   - bottom
+    #   - right
+    #   - back;
+    # front:
+    #   - single facet with 2 bounds
+    # --------------------- +
+    #     11 facets
+    assert len(obj.geometry.faces) == 11
+    # 10 facets with 1 bound, 1 facet with 2 bounds
+    assert sorted(collections.Counter(map(len, obj.geometry.faces)).items()) == [(1, 10), (2, 1)]