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| -rw-r--r-- | share/extensions/tests/test_inkex_paths.py | 950 |
1 files changed, 950 insertions, 0 deletions
diff --git a/share/extensions/tests/test_inkex_paths.py b/share/extensions/tests/test_inkex_paths.py new file mode 100644 index 0000000..e8f147b --- /dev/null +++ b/share/extensions/tests/test_inkex_paths.py @@ -0,0 +1,950 @@ +# coding=utf-8 +""" +Test Inkex path parsing functionality. +""" + +import re + +from inkex.paths import ( + InvalidPath, + Path, + PathCommand, + CubicSuperPath, + line, + move, + curve, + smooth, + quadratic, + tepidQuadratic, + arc, + vert, + horz, + zoneClose, + Line, + Move, + Horz, + Vert, + Curve, + Smooth, + Quadratic, + TepidQuadratic, + Arc, + ZoneClose, +) +from inkex.transforms import Transform, Vector2d +from inkex.tester import TestCase + +# pylint: disable=too-many-public-methods + + +class SegmentTest(TestCase): + """ + Test specific segment functionality. + """ + + def get_random_cmd(self, Cmd): + import random + + return Cmd(*[random.randint(0, 10) for i in range(Cmd.nargs)]) + + def test_equals(self): + """Segments should be equalitive""" + self.assertEqual(Move(10, 10), Move(10, 10)) + self.assertEqual(Line(10, 10), Line(10, 10)) + self.assertEqual(line(10, 10), line(10, 10)) + self.assertNotEqual(line(10, 10), Line(10, 10)) + self.assertEqual(Horz(10), Line(10, 0)) + self.assertEqual(Vert(10), Line(0, 10)) + self.assertNotEqual(Vert(10), Horz(10)) + + def test_to_curves(self): + """Segments can become curves""" + self.assertRaises(ValueError, Move(0, 0).to_curve, None) + self.assertEqual( + Line(10, 10).to_curve(Vector2d(10, 5)), (10, 5, 10, 10, 10, 10) + ) + self.assertEqual(Horz(10).to_curve(Vector2d(10, 5)), (10, 5, 10, 5, 10, 5)) + self.assertEqual(Vert(10).to_curve(Vector2d(5, 10)), (5, 10, 5, 10, 5, 10)) + self.assertEqual( + Curve(5, 5, 10, 10, 4, 4).to_curve(Vector2d(0, 0)), (5, 5, 10, 10, 4, 4) + ) + + self.assertEqual( + Smooth(10, 10, 4, 4).to_curve(Vector2d(4, 4), Vector2d(10, 10)), + (-2, -2, 10, 10, 4, 4), + ) + + self.assertAlmostTuple( + Quadratic(10, 10, 4, 4).to_curve(Vector2d(0, 0)).args, + (6.666666666666666, 6.666666666666666, 8, 8, 4, 4), + ) + + self.assertAlmostTuple( + TepidQuadratic(4, 4).to_curve(Vector2d(14, 19), Vector2d(11, 12)).args, + # (20.666666666666664, 30, 17.333333333333332, 25, 4, 4), + ( + 15.999999999999998, + 23.666666666666664, + 12.666666666666666, + 18.666666666666664, + 4, + 4, + ), + ) + + curves = list(Arc(50, 50, 0, 0, 1, 85, 85).to_curves(Vector2d(0, 0))) + self.assertEqual(len(curves), 3) + self.assertAlmostTuple( + curves[0].args, + ( + 19.77590700610636, + -5.4865851247611115, + 38.18634924829132, + -10.4196482558544, + 55.44095225512604, + -5.796291314453416, + ), + ) + self.assertAlmostTuple( + curves[1].args, + ( + 72.69555526196076, + -1.172934373052433, + 86.17293437305243, + 12.30444473803924, + 90.79629131445341, + 29.559047744873958, + ), + ) + self.assertAlmostTuple( + curves[2].args, + ( + 95.41964825585441, + 46.81365075170867, + 90.4865851247611, + 65.22409299389365, + 77.85533905932738, + 77.85533905932738, + ), + ) + + def apply_to_curve(obj): + obj.to_curve(Vector2d()) + + def apply_to_curves(obj): + obj.to_curve(Vector2d()) + + self.assertRaises(ValueError, apply_to_curve, ZoneClose()) + self.assertRaises(ValueError, apply_to_curves, zoneClose()) + + self.assertRaises(ValueError, apply_to_curve, Move(0, 0)) + self.assertRaises(ValueError, apply_to_curves, move(0, 0)) + + def test_transformation(self): + t = Transform(matrix=((1, 2, 3), (4, 5, 6))) + + first = Vector2d() + prev = Vector2d(31, 97) + prev_prev = Vector2d(5, 7) + + for Cmd in (Line, Move, Curve, Smooth, Quadratic, TepidQuadratic, Arc): + random_seg = self.get_random_cmd(Cmd) + self.assertTrue( + random_seg.transform(t) is not random_seg + ) # transform returns copy + self.assertEqual( + random_seg.transform(t).name, Cmd.name + ) # transform does not change Command type + + T = Transform() + T.add_translate(10, 20) + A = [ + T.apply_to_point(p) + for p in random_seg.control_points(first, prev, prev_prev) + ] + first2, prev2, prev_prev2 = ( + T.apply_to_point(p) for p in (first, prev, prev_prev) + ) + B = list( + random_seg.translate(Vector2d(10, 20)).control_points( + first2, prev2, prev_prev2 + ) + ) + self.assertAlmostTuple(A, B) + + T = Transform() + T.add_scale(10, 20) + A = [ + T.apply_to_point(p) + for p in random_seg.control_points(first, prev, prev_prev) + ] + first2, prev2, prev_prev2 = ( + T.apply_to_point(p) for p in (first, prev, prev_prev) + ) + B = list( + random_seg.scale((10, 20)).control_points(first2, prev2, prev_prev2) + ) + self.assertAlmostTuple(A, B) + + T = Transform() + T.add_rotate(35, 15, 28) + A = [ + T.apply_to_point(p) + for p in random_seg.control_points(first, prev, prev_prev) + ] + first2, prev2, prev_prev2 = ( + T.apply_to_point(p) for p in (first, prev, prev_prev) + ) + B = list( + random_seg.rotate(35, Vector2d(15, 28)).control_points( + first2, prev2, prev_prev2 + ) + ) + self.assertAlmostTuple(A, B) + + def test_absolute_relative(self): + absolutes = ( + Line, + Move, + Curve, + Smooth, + Quadratic, + TepidQuadratic, + Arc, + Vert, + Horz, + ZoneClose, + ) + relatives = ( + line, + move, + curve, + smooth, + quadratic, + tepidQuadratic, + arc, + vert, + horz, + zoneClose, + ) + + zero = Vector2d() + for R, A in zip(relatives, absolutes): + rel = self.get_random_cmd(R) + ab = self.get_random_cmd(A) + + self.assertTrue(rel.is_relative) + self.assertTrue(ab.is_absolute) + + self.assertFalse(rel.is_absolute) + self.assertFalse(ab.is_relative) + + self.assertEqual(type(rel.to_absolute(zero)), A) + self.assertEqual(type(ab.to_relative(zero)), R) + self.assertTrue(rel.to_relative(zero) is not rel) + self.assertTrue(ab.to_absolute(zero) is not ab) + + def test_to_line(self): + self.assertEqual(Vert(3).to_line(Vector2d(5, 11)), Line(5, 3)) + self.assertEqual(Horz(3).to_line(Vector2d(5, 11)), Line(3, 11)) + + self.assertEqual(vert(3).to_line(Vector2d(5, 11)), Line(5, 14)) + self.assertEqual(horz(3).to_line(Vector2d(5, 11)), Line(8, 11)) + + def test_args(self): + + commands = ( + Line, + Move, + Curve, + Smooth, + Quadratic, + TepidQuadratic, + Arc, + Vert, + Horz, + ZoneClose, + line, + move, + curve, + smooth, + quadratic, + tepidQuadratic, + arc, + vert, + horz, + zoneClose, + ) + + for Cmd in commands: + cmd = self.get_random_cmd(Cmd) + self.assertEqual(len(cmd.args), cmd.nargs) + self.assertEqual(Cmd(*cmd.args), cmd) + + +class PathTest(TestCase): + """Test path API and calculations""" + + def _assertPath(self, path, want_string): + """Test a normalized path string against a good value""" + return self.assertEqual(re.sub("\\s+", " ", str(path)), want_string) + + def test_new_empty(self): + """Create a path from a path string""" + self.assertEqual(str(Path()), "") + + def test_invalid(self): + """Load an invalid path""" + self._assertPath(Path("& 10 10 M 20 20"), "M 20 20") + self.assertRaises( + TypeError, + Line, + [ + 40, + ], + ) + + def test_copy(self): + """Make a copy of a path""" + self.assertEqual(str(Path("M 10 10").copy()), "M 10 10") + + def test_repr(self): + """Path representation""" + self._assertPath(repr(Path("M 10 10 10 10")), "[Move(10, 10), Line(10, 10)]") + + def test_list(self): + """Path of previous commands""" + path = Path(Path("M 10 10 20 20 30 30 Z")[1:-1]) + self._assertPath(path, "L 20 20 L 30 30") + + def test_passthrough(self): + """Create a path and test the re-rendering of the commands""" + for path in ( + "M 50,50 L 10,10 m 10 10 l 2.1,2", + "m 150 150 c 10 10 6 6 20 10 L 10 10", + ): + self._assertPath(Path(path), path.replace(",", " ")) + + def test_chained_conversion(self): + """Paths always extrapolate chained commands""" + for path, ret in ( + ("M 100 100 20 20", "M 100 100 L 20 20"), + ("M 100 100 Z 20 20", "M 100 100 Z M 20 20"), + ("M 100 100 L 20 20 40 40 30 10 Z", "M 100 100 L 20 20 L 40 40 L 30 10 Z"), + ("m 50 50 l 20 20 40 40", "m 50 50 l 20 20 l 40 40"), + ("m 50 50 20 20", "m 50 50 l 20 20"), + ((("m", (50, 50)), ("l", (20, 20))), "m 50 50 l 20 20"), + ): + self._assertPath(Path(path), ret) + + def test_create_from_points(self): + """Paths can be made of simple list of tuples""" + arg = ((10, 10), (4, 5), (16, -9), (20, 20)) + self.assertEqual(str(Path(arg)), "L 10 10 L 4 5 L 16 -9 L 20 20") + + def test_control_points(self): + """Test how x,y points are extracted""" + for path, ret in ( + ("M 100 100", ((100, 100),)), + ("L 100 100", ((100, 100),)), + ("H 133", ((133, 0),)), + ("V 144", ((0, 144),)), + ( + "Q 40 20 12 99 T 100 100", + ( + (40, 20), + (12, 99), + (-16, 178), + (100, 100), + ), + ), + ("C 12 12 15 15 20 20", ((12, 12), (15, 15), (20, 20))), + ( + "S 50 90 30 10", + ( + (0, 0), + (50, 90), + (30, 10), + ), + ), + ( + "Q 40 20 12 99", + ( + (40, 20), + (12, 99), + ), + ), + ("A 1,2,3,0,0,10,20", ((10, 20),)), + ("Z", ((0, 0),)), + ): + points = list(Path(path).control_points) + self.assertEqual(len(points), len(ret), msg=path) + self.assertTrue(all(p.is_close(r) for p, r in zip(points, ret)), msg=path) + + def test_bounding_box_lines(self): + """ + Test the bounding box calculations + + A diagonal line from 20,20 to 90,90 then to +10,+10 "\" + + """ + self.assertEqual( + (20, 100), (20, 100), Path("M 20,20 L 90,90 l 10,10 Z").bounding_box() + ) + self.assertEqual( + (10, 90), (10, 90), Path("M 20,20 L 90,90 L 10,10 Z").bounding_box() + ) + + def test_bounding_box_curves(self): + """ + Test the bounding box calculations of a curve + """ + + path = Path( + "M 85,14 C 104.63953,33.639531 104.71989,65.441157" + " 85,85 65.441157,104.71989 33.558843,104.71989 14,85" + " -5.7198883,65.441157 -5.6395306,33.639531 14,14" + " 33.639531,-5.6395306 65.360469,-5.6395306 85,14 Z" + ) + bb_tuple = path.bounding_box() + expected = (-0.760, -0.760 + 100.520), (-0.730, -0.730 + 100.520) + precision = 3 + + self.assertDeepAlmostEqual(tuple(bb_tuple.x), expected[0], places=precision) + self.assertDeepAlmostEqual(tuple(bb_tuple.y), expected[1], places=precision) + + def test_bounding_box_arcs(self): + """ + Test the bounding box calculations with arcs (currently is rough only) + + Bounding box around a circle with a radius of 50 + it should be from 0,0 -> 100, 100 + """ + path = Path( + "M 85.355333,14.644651 " + "A 50,50 0 0 1 85.355333,85.355341" + " 50,50 0 0 1 14.644657,85.355341" + " 50,50 0 0 1 14.644676,14.644651" + " 50,50 0 0 1 85.355333,14.644651 Z" + ) + + bb_tuple = path.bounding_box() + expected = (0, 100), (0, 100) + precision = 4 + + self.assertDeepAlmostEqual(tuple(bb_tuple.x), expected[0], places=precision) + self.assertDeepAlmostEqual(tuple(bb_tuple.y), expected[1], places=precision) + + # self.assertEqual(('ERROR'), Path('M 10 10 S 100 100 300 0').bounding_box()) + # self.assertEqual(('ERRPR'), Path('M 10 10 Q 100 100 300 0').bounding_box()) + + def test_adding_to_path(self): + """Paths can be translated using addition""" + ret = Path("M 20,20 L 90,90 l 10,10 Z").translate(50, 50) + self._assertPath(ret, "M 70 70 L 140 140 l 10 10 Z") + + def test_extending(self): + """Paths can be extended using addition""" + ret = Path("M 20 20") + Path("L 40 40 9 10") + self.assertEqual(type(ret), Path) + self._assertPath(ret, "M 20 20 L 40 40 L 9 10") + + ret = Path("M 20 20") + "C 40 40 9 10 10 10" + self.assertEqual(type(ret), Path) + self._assertPath(ret, "M 20 20 C 40 40 9 10 10 10") + + def test_subtracting_from_path(self): + """Paths can be translated using addition""" + ret = Path("M 20,20 L 90,90 l 10,10 Z").translate(-10, -10) + self._assertPath(ret, "M 10 10 L 80 80 l 10 10 Z") + + def test_scale(self): + """Paths can be scaled using the times operator""" + ret = Path("M 10,10 L 30,30 C 20 20 10 10 10 10 l 10 10").scale(2.5, 3) + self._assertPath(ret, "M 25 30 L 75 90 C 50 60 25 30 25 30 l 25 30") + + ret = Path( + "M 29.867708,101.68274 A 14.867708,14.867708 0 0 1 15,116.55045 14.867708," + "14.867708 0 0 1 0.13229179,101.68274 14.867708,14.867708 0 0 1 15,86.815031 " + "14.867708,14.867708 0 0 1 29.867708,101.68274 Z" + ) + ret = ret.scale(1.2, 0.8) + self._assertPath( + ret, + "M 35.8412 81.3462 " + "A 17.8412 11.8942 0 0 1 18 93.2404 " + "A 17.8412 11.8942 0 0 1 0.15875 81.3462 " + "A 17.8412 11.8942 0 0 1 18 69.452 " + "A 17.8412 11.8942 0 0 1 35.8412 81.3462 Z", + ) + + def test_scale_relative_after_close(self): + """Zone close moves current position correctly after transform""" + # expected positions: + # - before scale: + # M to (10,10), l by (+10,+10), Z back to (10,10), l by (+10,+10) + # <=> M to (10,10), L to (20,20), Z back to (10,10), L to (20,20) + # - after scale: + # M to (20,20), L to (40,40), Z back to (20,20), L to (40,40) + # <=> M to (20,20), l by (+20,+20), Z back to (20,20), l by (+20,+20) + ret = Path("M 10,10 l 10,10 Z l 10,10").scale(2, 2) + self._assertPath(ret, "M 20 20 l 20 20 Z l 20 20") + + def test_scale_multiple_zones(self): + """Zone close returns current position to start of zone (not start of path)""" + ret = Path("M 100 100 Z M 200 200 Z h 0").scale(1, 1) + self._assertPath(ret.to_absolute(), "M 100 100 Z M 200 200 Z L 200 200") + + def test_absolute(self): + """Paths can be converted to absolute""" + ret = Path("M 100 100 l 10 10 10 10 10 10") + self._assertPath(ret.to_absolute(), "M 100 100 L 110 110 L 120 120 L 130 130") + + ret = Path("M 100 100 h 10 10 10 v 10 10 10") + self._assertPath( + ret.to_absolute(), "M 100 100 H 110 H 120 H 130 V 110 V 120 V 130" + ) + + ret = Path("M 150,150 a 76,55 0 1 1 283,128") + self._assertPath(ret.to_absolute(), "M 150 150 A 76 55 0 1 1 433 278") + + ret = Path("m 5 5 h 5 v 5 h -5 z M 15 15 l 5 5 z m 10 10 h 5 v 5 h -5 z") + self._assertPath( + ret.to_absolute(), + "M 5 5 H 10 V 10 H 5 Z M 15 15 L 20 20 Z M 25 25 H 30 V 30 H 25 Z", + ) + + ret = Path("m 1 2 h 2 v 1 z m 4 0 h 2 v 1 z m 0 2 h 2 v 1 z") + self._assertPath( + ret.to_absolute(), "M 1 2 H 3 V 3 Z M 5 2 H 7 V 3 Z M 5 4 H 7 V 5 Z" + ) + + def test_relative(self): + """Paths can be converted to relative""" + ret = Path("M 100 100 L 110 120 140 140 300 300") + self._assertPath(ret.to_relative(), "m 100 100 l 10 20 l 30 20 l 160 160") + + ret = Path("M 150,150 A 76,55 0 1 1 433,278") + self._assertPath(ret.to_relative(), "m 150 150 a 76 55 0 1 1 283 128") + + ret = Path("M 1 2 H 3 V 3 Z M 5 2 H 7 V 3 Z M 5 4 H 7 V 5 Z") + self._assertPath( + ret.to_relative(), "m 1 2 h 2 v 1 z m 4 0 h 2 v 1 z m 0 2 h 2 v 1 z" + ) + + def test_rotate(self): + """Paths can be rotated""" + ret = Path("M 0.24999949,0.24999949 H 12.979167 V 12.979167 H 0.24999949 Z") + ret = ret.rotate(35, (0, 0)) + self._assertPath( + ret, + "M 0.0613938 0.348181 L 10.4885 7.64933 L 3.18737 18.0765 L -7.23976 10.7753 Z", + ) + + ret = Path("M 0.24999949,0.24999949 H 12.979167 V 12.979167 H 0.24999949 Z") + ret = ret.rotate(-35, (0, 0)) + self._assertPath( + ret, + "M 0.348181 0.0613938 L 10.7753 -7.23976 L 18.0765 3.18737 L 7.64933 10.4885 Z", + ) + + ret = Path("M 0.24999949,0.24999949 H 12.979167 V 12.979167 H 0.24999949 Z") + ret = ret.rotate(90, (10, -10)) + self._assertPath( + ret, + "M -0.249999 -19.75 L -0.249999 -7.02083 L -12.9792 -7.02083 L -12.9792 -19.75 Z", + ) + + ret = Path("M 0.24999949,0.24999949 H 12.979167 V 12.979167 H 0.24999949 Z") + ret = ret.rotate(90) + self._assertPath( + ret, + "M 12.9792 0.249999 L 12.9792 12.9792 L 0.249999 12.9792 L 0.249999 0.249999 Z", + ) + + def test_to_arrays(self): + """Return the full path as a bunch of arrays""" + ret = Path("M 100 100 L 110 120 H 20 C 120 0 6 10 10 2 Z").to_arrays() + self.assertEqual(len(ret), 5) + self.assertEqual(ret[0][0], "M") + self.assertEqual(ret[1][0], "L") + self.assertEqual(ret[2][0], "L") + self.assertEqual(ret[3][0], "C") + + def test_transform(self): + """Transform by a whole matrix""" + ret = Path("M 100 100 L 110 120 L 140 140 L 300 300") + ret = ret.transform(Transform(translate=(10, 10))) + self.assertEqual(str(ret), "M 110 110 L 120 130 L 150 150 L 310 310") + ret = ret.transform(Transform(translate=(-10, -10))) + self.assertEqual(str(ret), "M 100 100 L 110 120 L 140 140 L 300 300") + ret = Path("M 5 5 H 10 V 15") + ret = ret.transform(Transform(rotate=-10)) + self.assertEqual( + "M 5.79228 4.0558 " "L 10.7163 3.18756 " "L 12.4528 13.0356", str(ret) + ) + ret = Path("M 10 10 A 50,50 0 0 1 85.355333,85.355341 L 100 0") + ret = ret.transform(Transform(scale=10)) + self.assertEqual(str(ret), "M 100 100 A 500 500 0 0 1 853.553 853.553 L 1000 0") + self.assertRaises(ValueError, Horz([10]).transform, Transform()) + + def test_inline_transformations(self): + path = Path() + self.assertTrue(path is not path.translate(10, 20)) + self.assertTrue(path is not path.transform(Transform(scale=10))) + self.assertTrue(path is not path.rotate(10)) + self.assertTrue(path is not path.scale(10, 20)) + + self.assertTrue(path is path.translate(10, 20, inplace=True)) + self.assertTrue(path is path.transform(Transform(scale=10), inplace=True)) + self.assertTrue(path is path.rotate(10, inplace=True)) + self.assertTrue(path is path.scale(10, 20, inplace=True)) + + def test_transformation_preserve_type(self): + import re + + paths = [ + "M 10 10 A 100 100 0 1 0 100 100 C 10 15 20 20 5 5 Z", + "m 10 10 a 100 100 0 1 0 100 100 c 10 15 20 20 5 5 z", + "m 10 10 l 100 200 L 20 30 C 10 20 30 40 11 12", + "M 10 10 Q 12 13 14 15 T 11 32 T 32 11", + "m 10 10 q 12 13 14 15 t 11 32 t 32 11", + ] + t = Transform(matrix=((1, 2, 3), (4, 5, 6))) + for path_str in paths: + path = Path(path_str) + new_path = path.transform(t) + cmds = "".join([cmd.letter for cmd in new_path]) + expected = re.sub(r"\d|\s|,", "", path_str) + + self.assertEqual(expected, cmds) + self.assertAlmostTuple( + [t.apply_to_point(p) for p in path.control_points], + list(new_path.control_points), + ) + + def test_arc_transformation(self): + cases = [ + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 0, 1), (0, 1, 0)), + "M 11 10 A 100 100 0 1 0 101 100 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 0, 0), (0, 1, 1)), + "M 10 11 A 100 100 0 1 0 100 101 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 0, 1), (0, 1, 1)), + "M 11 11 A 100 100 0 1 0 101 101 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((2, 0, 0), (0, 1, 0)), + "M 20 10 A 200 100 0 1 0 200 100 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 0, 0), (0, 2, 0)), + "M 10 20 A 200 100 90 1 0 100 200 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 0, 0), (0, -1, 0)), + "M 10 -10 A 100 100 0 1 1 100 -100 Z", + ), + ( + "M 10 10 A 100 100 0 1 0 100 100 Z", + ((1, 2, 0), (0, 2, 0)), + "M 30 20 " "A 292.081 68.4742 41.4375 1 0 300 200 Z", + ), + ( + "M 10 10 " "A 100 100 0 1 0 100 100 " "A 300 200 0 1 0 50 20 Z", + ((1, 2, 0), (5, 6, 0)), + "M 30,110 " + "A 810.90492,49.327608 74.368134 1 1 " + "300,1100 1981.2436,121.13604 75.800007 1 1 90,370 Z", + ), + ] + for path, transform, expected in cases: + expected = Path(expected) + result = Path(path).transform(Transform(matrix=transform)) + self.assertDeepAlmostEqual( + expected.to_arrays(), result.to_arrays(), places=4 + ) + + def test_single_point_transform(self): + from math import sqrt, sin, cos + + self.assertAlmostTuple( + list(Path("M 10 10 30 20").control_points), ((10, 10), (30, 20)) + ) + self.assertAlmostTuple( + list( + Path("M 10 10 30 20") + .transform(Transform(translate=(10, 7))) + .control_points + ), + ((20, 17), (40, 27)), + ) + self.assertAlmostTuple( + list( + Path("M 20 20 5 0 0 7 ").transform(Transform(scale=10)).control_points + ), + ((200, 200), (50, 0), (0, 70)), + ) + + self.assertAlmostTuple( + list(Path("M 20 20 1 0").transform(Transform(rotate=90)).control_points), + ((-20, 20), (0, 1)), + ) + + self.assertAlmostTuple( + list(Path("M 20 20 1 0").transform(Transform(rotate=45)).control_points), + ((0, sqrt(20**2 + 20**2)), (sqrt(2) / 2, sqrt(2) / 2)), + ) + + self.assertAlmostTuple( + list(Path("M 1 0 0 1").transform(Transform(rotate=30)).control_points), + ((sqrt(3) / 2, 0.5), (-0.5, sqrt(3) / 2)), + ) + + def test_reverse(self): + """Paths can be reversed""" + # Testing reverse() with relative coordinates, closed path + ret = Path( + "m 10 50 h 40 v -40 l 50 39.9998 c -22 2 -35 12 -50 25 l -40 -15 l 0 -10 z" + ) + ret = ret.reverse() + self._assertPath( + ret, + "m 10 50 l 0 -0.0002 l -0 10 l 40 15 c 15 -13 28 -23 50 -25 l -50 -39.9998 v 40 z", + ) + # Testing reverse() with relative coordinates, open path + ret = Path( + "m 10 50 h 40 v -40 l 50 39.9998 c -22 2 -35 12 -50 25 l -40 -15 l 0 -10" + ) + ret = ret.reverse() + self._assertPath( + ret, + "m 10 49.9998 l -0 10 l 40 15 c 15 -13 28 -23 50 -25 l -50 -39.9998 v 40 h -40", + ) + # Testing reverse() with absolute coordinates, closed path + ret = Path("M 100 35 L 100 25 L 60 10 C 45 23 32 33 10 35 L 60 75 L 60 35 Z") + ret = ret.reverse() + self._assertPath( + ret, + "M 100 35 L 60 35 L 60 75 L 10 35 C 32 33 45 23 60 10 L 100 25 Z", + ) + # Testing reverse() with absolute coordinates, open path + ret = Path( + "M 100 35 L 100 25 L 60 10 C 45 23 32 33 10 35 L 60 75 L 60 35 L 100 35" + ) + ret = ret.reverse() + self._assertPath( + ret, + "M 100 35 L 60 35 L 60 75 L 10 35 C 32 33 45 23 60 10 L 100 25 L 100 35", + ) + ret = Path("M 100,250 q 250,100 400,250") + ret = ret.reverse() + self._assertPath(ret, "M 500 500 q -150 -150 -400 -250") + + def test_reverse_multiple_subpaths(self): + """Test for https://gitlab.com/inkscape/extensions/-/issues/445. First two + examples are from the issue""" + ret = Path("M 128,64 L 128,128 M 128,196 L 128,256").reverse() + self._assertPath(ret, "M 128 256 L 128 196 M 128 128 L 128 64") + + ret = Path("M 128,64 L 128,128 m 128,196 L 128,256").reverse() + self._assertPath(ret, "M 128 256 L 256 324 m -128 -196 L 128 64") + + # More complex example with absolute and relative move commands + ret = Path( + "m 58,88 c -10,2 3,13 10,4 z M 32,67 c 14,-5 23,-3 35,7 m 2,-21 c" + "10,11 20,19 34,11 M 24,43 c 23,-14 18,-5 39,4" + ).reverse() + self._assertPath( + ret, + "m 63 47 c -21 -9 -16 -18 -39 -4 M 103 64 c -14 8 -24 0 -34 -11 " + "m -2 21 c -12 -10 -21 -12 -35 -7 M 58 88 l 10 4 c -7 9 -20 -2 -10 -4 z", + ) + + +class SuperPathTest(TestCase): + """Super path tests for testing the super path class""" + + def test_closing(self): + """Closing paths create two arrays""" + path = Path( + "M 0,0 C 1.505,0 2.727,-0.823 2.727,-1.841 V -4.348 C 2.727,-5.363" + " 1.505,-6.189 0,-6.189 H -8.3 V 0 Z m -10.713,1.991 h -0.211 V -8.178" + " H 0 c 2.954,0 5.345,1.716 5.345,3.83 v 2.507 C 5.345,0.271 2.954,1.991" + " 0,1.991 Z" + ) + csp = path.to_superpath() + self.assertEqual(len(csp), 2) + + def test_closing_without_z(self): + """Closing paths without z create two arrays""" + path = Path( + "m 51.553104,253.58572 c -11.644086,-0.14509 -4.683516,-19.48876" + " 2.096523,-8.48973 1.722993,2.92995 0.781608,6.73867 -2.096523,8.48973" + " m -3.100522,-13.02176 c -18.971587,17.33811 15.454875,20.05577" + " 6.51412,3.75474 -1.362416,-2.30812 -3.856221,-3.74395 -6.51412,-3.75474" + ) + csp = path.to_superpath() + self.assertEqual(len(csp), 2) + + def test_from_arrays(self): + """SuperPath from arrays""" + csp = CubicSuperPath( + [ + [ + [[14, 173], [14, 173], (14, 173)], + [(15, 171), (17, 168), (18, 168)], + ], + [ + [(18, 167), (18, 167), [20, 165]], + ((21, 164), [22, 162], (23, 162)), + ], + ] + ) + self.assertEqual( + str(csp.to_path()), + "M 14 173 C 14 173 15 171 17 168 M 18 167 C 20 165 21 164 22 162", + ) + + def test_is_line(self): + """Test is super path segments can detect lines""" + path = Path( + "m 49,88 70,-1 c 18,17 1,59 1.7,59 " + "0,0 -48.7,18 -70.5,-1 18,-15 25,-32.4 -1.5,-57.2 z" + ) + csp = path.to_superpath() + self.assertTrue(csp.is_line(csp[0][0], csp[0][1]), "Should be a line") + self.assertFalse( + csp.is_line(csp[0][3], csp[0][4]), "Both controls not detected" + ) + self.assertFalse( + csp.is_line(csp[0][1], csp[0][2]), "Start control not detected" + ) + self.assertFalse(csp.is_line(csp[0][2], csp[0][3]), "End control not detected") + # Also tests if zone close is applied correctly. + self.assertEqual( + str(csp.to_path()), + "M 49 88 L 119 87 C 137 104 120 146 120.7 146 " + "C 120.7 146 72 164 50.2 145 C 68.2 130 75.2 112.6 48.7 87.8 Z", + ) + + def test_is_line_simplify(self): + """Test if super path segments can detect if a segment can be simplified to a line""" + path = Path("M 10 10 C 20,20 30,30 40,40 C 100, 100 50, 50 60, 60") + csp = path.to_superpath() + + self.assertTrue(csp.is_line(csp[0][0], csp[0][1])) # line can be retracted + self.assertFalse( + csp.is_line(csp[0][1], csp[0][2]) + ) # is line, but shoots over endpoint + + self.assertEqual(str(csp.to_path()), "M 10 10 L 40 40 C 100 100 50 50 60 60") + + def test_is_line_collinear(self): + self.assertFalse(CubicSuperPath.collinear([1, 2], [2, 2.00001], [3, 2])) + self.assertTrue(CubicSuperPath.collinear([1, 2], [2, 2], [3, 2])) + self.assertTrue(CubicSuperPath.collinear([3, 2], [2, 2], [1, 2])) + + def test_is_within(self): + self.assertTrue(CubicSuperPath.within(2, 1, 3)) + self.assertTrue(CubicSuperPath.within(2, 3, 1)) + self.assertTrue(CubicSuperPath.within(2, 2, 2)) + self.assertTrue(CubicSuperPath.within(2, 3, 2)) + self.assertFalse(CubicSuperPath.within(3, 2.9999, 2)) + + def test_is_stable(self): + """Test for https://gitlab.com/inkscape/extensions/-/issues/374""" + path = Path("M 10 10 h 10 v 10 h -10 Z") + + tempsub = path.to_superpath() + comparison = str(tempsub) + for _ in range(15): + tempsub = CubicSuperPath(tempsub[0]) + self.assertEqual(comparison, str(tempsub)) + + def test_multiple_relative(self): + """Test for https://gitlab.com/inkscape/extensions/-/issues/450""" + + def compare_complex(current, epts): + for point, comp in zip(current.end_points, epts): + self.assertAlmostTuple(point, comp, msg=f"got {point}, expected {comp}") + for point, comp in zip(current.control_points, epts): + self.assertAlmostTuple(point, comp, msg=f"got {point}, expected {comp}") + # now reverse the path + p_rev = current.reverse() + for point, comp in zip(p_rev.end_points, epts[::-1]): + self.assertAlmostTuple(point, comp, msg=f"got {point}, expected {comp}") + # We expect to have the same amount of closed subpaths after the operation + self.assertEqual( + len(re.findall(r"[Zz]", str(p_rev))), + len(re.findall(r"[Zz]", str(current))), + ) + # now check that transform works correctly + p_trans = current.transform(Transform("translate(10, 20)")) + for point, comp in zip(p_trans.end_points, epts): + comp = comp + Vector2d(10, 20) + self.assertAlmostTuple(point, comp, msg=f"got {point}, expected {comp}") + + path = Path("m 50,20 v -10 h -10 z m 30,-20 v 20 h 20 z m -50,20 v -15 h -15 z") + path2 = Path( + "m 50,20 v -10 h -10 l 10, 10 m 30,-20 v 20 h 20 l -20,-20 m -50,20 v -15 h -15 z" + ) + path3 = Path( + "m 50,20 v -10 h -10 z m 30,-20 v 20 h 20 l -20,-20 m -50,20 v -15 h -15 l 15 15" + ) + pts = [ + (50, 20), + (50, 10), + (40, 10), + (50, 20), + (80, 0), + (80, 20), + (100, 20), + (80, 0), + (30, 20), + (30, 5), + (15, 5), + (30, 20), + ] + compare_complex(path, pts) + compare_complex(path2, pts) + compare_complex(path3, pts) + path4 = Path("m 50,20 v -10 h -10 z z z") + pts4 = [(50, 20), (50, 10), (40, 10), (50, 20), (50, 20), (50, 20)] + compare_complex(path4, pts4) + path5 = Path("m 50,20 z m 10, 10 m 20, 20 v -10 h -10 z") + pts5 = [(50, 20), (50, 20), (60, 30), (80, 50), (80, 40), (70, 40), (80, 50)] + compare_complex(path5, pts5) + + +class ProxyTest(TestCase): + def test_simple_path(self): + """Check coordinate computation""" + path = Path("M 10 10 h 10 v 10 h -10 Z") + + proxycommands = list(path.proxy_iterator()) + + self.assertAlmostTuple(list(proxycommands[1].previous_end_point), (10, 10)) + self.assertAlmostTuple(list(proxycommands[1].end_point), (20, 10)) + self.assertAlmostTuple(list(proxycommands[2].previous_end_point), (20, 10)) + + +class TestPathErrorHandling(TestCase): + """Path data error handling""" + + def test_incorrect_parameter_amount(self): + """Check that extra args (or rather, missing args of the next path) is + handled correctly, i.e. according to + https://www.w3.org/TR/SVG/paths.html#PathDataErrorHandling""" + path = Path("M 10,10 L 20,20,30") + self.assertEqual(str(path), "M 10 10 L 20 20") |