# Note: This file was taken mostly as is from the svg.path module (v 2.0) from __future__ import division, absolute_import, print_function import unittest from svgpathtools import * import svgpathtools import numpy as np def construct_rotation_tf(a, x, y): a = a * np.pi / 180.0 tf_offset = np.identity(3) tf_offset[0:2, 2:3] = np.array([[x], [y]]) tf_rotate = np.identity(3) tf_rotate[0:2, 0:2] = np.array([[np.cos(a), -np.sin(a)], [np.sin(a), np.cos(a)]]) tf_offset_neg = np.identity(3) tf_offset_neg[0:2, 2:3] = np.array([[-x], [-y]]) return tf_offset.dot(tf_rotate).dot(tf_offset_neg) class TestParser(unittest.TestCase): def test_svg_examples(self): """Examples from the SVG spec""" path1 = parse_path('M 100 100 L 300 100 L 200 300 z') self.assertEqual(path1, Path(Line(100 + 100j, 300 + 100j), Line(300 + 100j, 200 + 300j), Line(200 + 300j, 100 + 100j))) self.assertTrue(path1.isclosed()) # for Z command behavior when there is multiple subpaths path1 = parse_path('M 0 0 L 50 20 M 100 100 L 300 100 L 200 300 z') self.assertEqual(path1, Path(Line(0 + 0j, 50 + 20j), Line(100 + 100j, 300 + 100j), Line(300 + 100j, 200 + 300j), Line(200 + 300j, 100 + 100j))) path1 = parse_path('M 100 100 L 200 200') path2 = parse_path('M100 100L200 200') self.assertEqual(path1, path2) path1 = parse_path('M 100 200 L 200 100 L -100 -200') path2 = parse_path('M 100 200 L 200 100 -100 -200') self.assertEqual(path1, path2) path1 = parse_path("""M100,200 C100,100 250,100 250,200 S400,300 400,200""") self.assertEqual(path1, Path(CubicBezier(100 + 200j, 100 + 100j, 250 + 100j, 250 + 200j), CubicBezier(250 + 200j, 250 + 300j, 400 + 300j, 400 + 200j))) path1 = parse_path('M100,200 C100,100 400,100 400,200') self.assertEqual(path1, Path(CubicBezier(100 + 200j, 100 + 100j, 400 + 100j, 400 + 200j))) path1 = parse_path('M100,500 C25,400 475,400 400,500') self.assertEqual(path1, Path(CubicBezier(100 + 500j, 25 + 400j, 475 + 400j, 400 + 500j))) path1 = parse_path('M100,800 C175,700 325,700 400,800') self.assertEqual(path1, Path(CubicBezier(100 + 800j, 175 + 700j, 325 + 700j, 400 + 800j))) path1 = parse_path('M600,200 C675,100 975,100 900,200') self.assertEqual(path1, Path(CubicBezier(600 + 200j, 675 + 100j, 975 + 100j, 900 + 200j))) path1 = parse_path('M600,500 C600,350 900,650 900,500') self.assertEqual(path1, Path(CubicBezier(600 + 500j, 600 + 350j, 900 + 650j, 900 + 500j))) path1 = parse_path("""M600,800 C625,700 725,700 750,800 S875,900 900,800""") self.assertEqual(path1, Path(CubicBezier(600 + 800j, 625 + 700j, 725 + 700j, 750 + 800j), CubicBezier(750 + 800j, 775 + 900j, 875 + 900j, 900 + 800j))) path1 = parse_path('M200,300 Q400,50 600,300 T1000,300') self.assertEqual(path1, Path(QuadraticBezier(200 + 300j, 400 + 50j, 600 + 300j), QuadraticBezier(600 + 300j, 800 + 550j, 1000 + 300j))) path1 = parse_path('M300,200 h-150 a150,150 0 1,0 150,-150 z') self.assertEqual(path1, Path(Line(300 + 200j, 150 + 200j), Arc(150 + 200j, 150 + 150j, 0, 1, 0, 300 + 50j), Line(300 + 50j, 300 + 200j))) path1 = parse_path('M275,175 v-150 a150,150 0 0,0 -150,150 z') self.assertEqual(path1, Path(Line(275 + 175j, 275 + 25j), Arc(275 + 25j, 150 + 150j, 0, 0, 0, 125 + 175j), Line(125 + 175j, 275 + 175j))) path1 = parse_path("""M600,350 l 50,-25 a25,25 -30 0,1 50,-25 l 50,-25 a25,50 -30 0,1 50,-25 l 50,-25 a25,75 -30 0,1 50,-25 l 50,-25 a25,100 -30 0,1 50,-25 l 50,-25""") self.assertEqual(path1, Path(Line(600 + 350j, 650 + 325j), Arc(650 + 325j, 25 + 25j, -30, 0, 1, 700 + 300j), Line(700 + 300j, 750 + 275j), Arc(750 + 275j, 25 + 50j, -30, 0, 1, 800 + 250j), Line(800 + 250j, 850 + 225j), Arc(850 + 225j, 25 + 75j, -30, 0, 1, 900 + 200j), Line(900 + 200j, 950 + 175j), Arc(950 + 175j, 25 + 100j, -30, 0, 1, 1000 + 150j), Line(1000 + 150j, 1050 + 125j))) def test_others(self): # Other paths that need testing: # Relative moveto: path1 = parse_path('M 0 0 L 50 20 m 50 80 L 300 100 L 200 300 z') self.assertEqual(path1, Path(Line(0 + 0j, 50 + 20j), Line(100 + 100j, 300 + 100j), Line(300 + 100j, 200 + 300j), Line(200 + 300j, 100 + 100j))) # Initial smooth and relative CubicBezier path1 = parse_path("""M100,200 s 150,-100 150,0""") self.assertEqual(path1, Path(CubicBezier(100 + 200j, 100 + 200j, 250 + 100j, 250 + 200j))) # Initial smooth and relative QuadraticBezier path1 = parse_path("""M100,200 t 150,0""") self.assertEqual(path1, Path(QuadraticBezier(100 + 200j, 100 + 200j, 250 + 200j))) # Relative QuadraticBezier path1 = parse_path("""M100,200 q 0,0 150,0""") self.assertEqual(path1, Path(QuadraticBezier(100 + 200j, 100 + 200j, 250 + 200j))) def test_negative(self): """You don't need spaces before a minus-sign""" path1 = parse_path('M100,200c10-5,20-10,30-20') path2 = parse_path('M 100 200 c 10 -5 20 -10 30 -20') self.assertEqual(path1, path2) def test_numbers(self): """Exponents and other number format cases""" # It can be e or E, the plus is optional, and a minimum of # +/-3.4e38 must be supported. path1 = parse_path('M-3.4e38 3.4E+38L-3.4E-38,3.4e-38') path2 = Path(Line(-3.4e+38 + 3.4e+38j, -3.4e-38 + 3.4e-38j)) self.assertEqual(path1, path2) def test_errors(self): self.assertRaises(ValueError, parse_path, 'M 100 100 L 200 200 Z 100 200') def test_transform(self): tf_matrix = svgpathtools.parser.parse_transform( 'matrix(1.0 2.0 3.0 4.0 5.0 6.0)') expected_tf_matrix = np.identity(3) expected_tf_matrix[0:2, 0:3] = np.array([[1.0, 3.0, 5.0], [2.0, 4.0, 6.0]]) self.assertTrue(np.array_equal(expected_tf_matrix, tf_matrix)) # Try a test with no y specified expected_tf_translate = np.identity(3) expected_tf_translate[0, 2] = -36 self.assertTrue(np.array_equal( expected_tf_translate, svgpathtools.parser.parse_transform('translate(-36)') )) # Now specify y expected_tf_translate[1, 2] = 45.5 tf_translate = svgpathtools.parser.parse_transform( 'translate(-36 45.5)') self.assertTrue(np.array_equal(expected_tf_translate, tf_translate)) # Try a test with no y specified expected_tf_scale = np.identity(3) expected_tf_scale[0, 0] = 10 expected_tf_scale[1, 1] = 10 self.assertTrue(np.array_equal( expected_tf_scale, svgpathtools.parser.parse_transform('scale(10)') )) # Now specify y expected_tf_scale[1, 1] = 0.5 tf_scale = svgpathtools.parser.parse_transform('scale(10 0.5)') self.assertTrue(np.array_equal(expected_tf_scale, tf_scale)) tf_rotation = svgpathtools.parser.parse_transform('rotate(-10 50 100)') expected_tf_rotation = construct_rotation_tf(-10, 50, 100) self.assertTrue(np.array_equal(expected_tf_rotation, tf_rotation)) # Try a test with no offset specified self.assertTrue(np.array_equal( construct_rotation_tf(50, 0, 0), svgpathtools.parser.parse_transform('rotate(50)') )) expected_tf_skewx = np.identity(3) expected_tf_skewx[0, 1] = np.tan(40.0 * np.pi/180.0) tf_skewx = svgpathtools.parser.parse_transform('skewX(40)') self.assertTrue(np.array_equal(expected_tf_skewx, tf_skewx)) expected_tf_skewy = np.identity(3) expected_tf_skewy[1, 0] = np.tan(30.0 * np.pi / 180.0) tf_skewy = svgpathtools.parser.parse_transform('skewY(30)') self.assertTrue(np.array_equal(expected_tf_skewy, tf_skewy)) self.assertTrue(np.array_equal( tf_rotation.dot(tf_translate).dot(tf_skewx).dot(tf_scale), svgpathtools.parser.parse_transform( """rotate(-10 50 100) translate(-36 45.5) skewX(40) scale(10 0.5)""") ))