""" build123d imports name: test_compound.py by: Gumyr date: January 22, 2025 desc: This python module contains tests for the build123d project. license: Copyright 2025 Gumyr Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. """ import itertools import unittest from build123d.build_common import GridLocations, PolarLocations from build123d.build_enums import Align, CenterOf from build123d.geometry import Location, Plane from build123d.objects_part import Box from build123d.objects_sketch import Circle from build123d.topology import Compound, Edge, Face, ShapeList, Solid, Sketch class TestCompound(unittest.TestCase): def test_make_text(self): arc = Edge.make_three_point_arc((-50, 0, 0), (0, 20, 0), (50, 0, 0)) text = Compound.make_text("test", 10, text_path=arc) self.assertEqual(len(text.faces()), 4) text = Compound.make_text( "test", 10, align=(Align.MAX, Align.MAX), text_path=arc ) self.assertEqual(len(text.faces()), 4) def test_fuse(self): box1 = Solid.make_box(1, 1, 1) box2 = Solid.make_box(1, 1, 1, Plane((1, 0, 0))) combined = Compound([box1]).fuse(box2, glue=True) self.assertTrue(combined.is_valid) self.assertAlmostEqual(combined.volume, 2, 5) fuzzy = Compound([box1]).fuse(box2, tol=1e-6) self.assertTrue(fuzzy.is_valid) self.assertAlmostEqual(fuzzy.volume, 2, 5) def test_remove(self): box1 = Solid.make_box(1, 1, 1) box2 = Solid.make_box(1, 1, 1, Plane((2, 0, 0))) combined = Compound([box1, box2]) self.assertTrue(len(combined._remove(box2).solids()), 1) def test_repr(self): simple = Compound([Solid.make_box(1, 1, 1)]) simple_str = repr(simple).split("0x")[0] + repr(simple).split(", ")[1] self.assertEqual(simple_str, "Compound at label()") assembly = Compound([Solid.make_box(1, 1, 1)]) assembly.children = [Solid.make_box(1, 1, 1)] assembly.label = "test" assembly_str = repr(assembly).split("0x")[0] + repr(assembly).split(", l")[1] self.assertEqual(assembly_str, "Compound at abel(test), #children(1)") def test_center(self): test_compound = Compound( [ Solid.make_box(2, 2, 2).locate(Location((-1, -1, -1))), Solid.make_box(1, 1, 1).locate(Location((8.5, -0.5, -0.5))), ] ) self.assertAlmostEqual(test_compound.center(CenterOf.MASS), (1, 0, 0), 5) self.assertAlmostEqual( test_compound.center(CenterOf.BOUNDING_BOX), (4.25, 0, 0), 5 ) with self.assertRaises(ValueError): test_compound.center(CenterOf.GEOMETRY) def test_triad(self): triad = Compound.make_triad(10) bbox = triad.bounding_box() self.assertGreater(bbox.min.X, -10 / 8) self.assertLess(bbox.min.X, 0) self.assertGreater(bbox.min.Y, -10 / 8) self.assertLess(bbox.min.Y, 0) self.assertGreater(bbox.min.Y, -10 / 8) self.assertAlmostEqual(bbox.min.Z, 0, 4) self.assertLess(bbox.size.Z, 12.5) self.assertEqual(triad.volume, 0) def test_volume(self): e = Edge.make_line((0, 0), (1, 1)) self.assertAlmostEqual(e.volume, 0, 5) f = Face.make_rect(1, 1) self.assertAlmostEqual(f.volume, 0, 5) b = Solid.make_box(1, 1, 1) self.assertAlmostEqual(b.volume, 1, 5) bb = Box(1, 1, 1) self.assertAlmostEqual(bb.volume, 1, 5) c = Compound(children=[e, f, b, bb, b.translate((0, 5, 0))]) self.assertAlmostEqual(c.volume, 3, 5) # N.B. b and bb overlap but still add to Compound volume def test_constructor(self): with self.assertRaises(TypeError): Compound(foo="bar") def test_len(self): self.assertEqual(len(Compound()), 0) skt = Sketch() + GridLocations(10, 10, 2, 2) * Circle(1) self.assertEqual(len(skt), 4) def test_iteration(self): skt = Sketch() + GridLocations(10, 10, 2, 2) * Circle(1) for c1, c2 in itertools.combinations(skt, 2): self.assertGreaterEqual((c1.position - c2.position).length, 10) def test_unwrap(self): skt = Sketch() + GridLocations(10, 10, 2, 2) * Circle(1) skt2 = Compound(children=[skt]) self.assertEqual(len(skt2), 1) skt3 = skt2.unwrap(fully=False) self.assertEqual(len(skt3), 4) comp1 = Compound().unwrap() self.assertEqual(len(comp1), 0) comp2 = Compound(children=[Face.make_rect(1, 1)]) comp3 = Compound(children=[comp2]) self.assertEqual(len(comp3), 1) self.assertTrue(isinstance(next(iter(comp3)), Compound)) comp4 = comp3.unwrap(fully=True) self.assertTrue(isinstance(comp4, Face)) def test_get_top_level_shapes(self): base_shapes = Compound(children=PolarLocations(15, 20) * Box(4, 4, 4)) fls = base_shapes.get_top_level_shapes() self.assertTrue(isinstance(fls, ShapeList)) self.assertEqual(len(fls), 20) self.assertTrue(all(isinstance(s, Solid) for s in fls)) b1 = Box(1, 1, 1).solid() self.assertEqual(b1.get_top_level_shapes()[0], b1) if __name__ == "__main__": unittest.main()