add back pypi action new tag condition

return error if Path.point() cannot be computed

.github/workflows/github-ci-legacy.yml

@@ -0,0 +1,34 @@
+name: Github CI Unit Testing for Legacy Environments
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    continue-on-error: true
+    strategy:
+      matrix:
+        os: [ubuntu-18.04, macos-10.15, windows-2019]
+        python-version: [2.7, 3.5, 3.6]
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      # configure python
+      - uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      # install deps
+      - name: Install dependencies for ${{ matrix.os }} Python ${{ matrix.python-version }}
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install scipy
+
+      # find and run all unit tests
+      - name: Run unit tests
+        run: python -m unittest discover test

.github/workflows/github-ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9, "3.10"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2

.github/workflows/publish-on-pypi-test.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   build-n-publish:
     name: Build and publish to TestPyPI
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
     - name: Set up Python 3
@@ -30,7 +30,7 @@ jobs:
         --outdir dist/
         .
     - name: Publish to Test PyPI
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         skip_existing: true
         password: ${{ secrets.TESTPYPI_API_TOKEN }}

.github/workflows/publish-on-pypi.yml

@@ -1,4 +1,4 @@
-name: Publish to TestPyPI and if new version PyPI
+name: Publish to PyPI if new version
 
 on:
   push:
@@ -8,7 +8,7 @@ on:
 jobs:
   build-n-publish:
     name: Build and publish to TestPyPI and PyPI
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
     - name: Set up Python 3
@@ -30,13 +30,13 @@ jobs:
         --outdir dist/
         .
     - name: Publish to Test PyPI
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         skip_existing: true
         password: ${{ secrets.TESTPYPI_API_TOKEN }}
         repository_url: https://test.pypi.org/legacy/
     - name: Publish to PyPI
       if: startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         password: ${{ secrets.PYPI_API_TOKEN }}

README.ipynb

@@ -7,7 +7,6 @@
     "[![Donate](https://img.shields.io/badge/donate-paypal-brightgreen)](https://www.paypal.com/donate?business=4SKJ27AM4EYYA&no_recurring=0&item_name=Support+the+creator+of+svgpathtools?++He%27s+a+student+and+would+appreciate+it.&currency_code=USD)\n",
     "![Python](https://img.shields.io/pypi/pyversions/svgpathtools.svg)\n",
     "[![PyPI](https://img.shields.io/pypi/v/svgpathtools)](https://pypi.org/project/svgpathtools/)\n",
-    "![Build](https://img.shields.io/github/workflow/status/mathandy/svgpathtools/Github%20CI%20Unit%20Testing)\n",
     "[![PyPI - Downloads](https://img.shields.io/pypi/dm/svgpathtools?color=yellow)](https://pypistats.org/packages/svgpathtools)\n",
     "# svgpathtools\n",
     "\n",

README.md

@@ -1,7 +1,6 @@
 [![Donate](https://img.shields.io/badge/donate-paypal-brightgreen)](https://www.paypal.com/donate?business=4SKJ27AM4EYYA&no_recurring=0&item_name=Support+the+creator+of+svgpathtools?++He%27s+a+student+and+would+appreciate+it.&currency_code=USD)
 ![Python](https://img.shields.io/pypi/pyversions/svgpathtools.svg)
 [![PyPI](https://img.shields.io/pypi/v/svgpathtools)](https://pypi.org/project/svgpathtools/)
-![Build](https://img.shields.io/github/workflow/status/mathandy/svgpathtools/Github%20CI%20Unit%20Testing)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/svgpathtools?color=yellow)](https://pypistats.org/packages/svgpathtools)
 # svgpathtools
 

examples/compute-many-points-quickly-using-numpy-arrays.py

@@ -8,7 +8,7 @@ Note: The relevant matrix transformation for quadratics can be found in the
 svgpathtools.bezier module."""
 from __future__ import print_function
 import numpy as np
-from svgpathtools import *
+from svgpathtools import bezier_point, Path, bpoints2bezier, polynomial2bezier
 
 
 class HigherOrderBezier:

examples/determine-if-svg-path-is-contained-in-other-path-example.py

@@ -7,7 +7,8 @@ Path.continuous_subpaths() method to split a paths into a list of its
 continuous subpaths.
 """
 
-from svgpathtools import *
+from svgpathtools import Path, Line
+
 
 def path1_is_contained_in_path2(path1, path2):
     assert path2.isclosed()  # This question isn't well-defined otherwise
@@ -16,11 +17,11 @@ def path1_is_contained_in_path2(path1, path2):
 
     # find a point that's definitely outside path2
     xmin, xmax, ymin, ymax = path2.bbox()
-    B = (xmin + 1) + 1j*(ymax + 1)
+    b = (xmin + 1) + 1j*(ymax + 1)
 
-    A = path1.start  # pick an arbitrary point in path1
+    a = path1.start  # pick an arbitrary point in path1
-    AB_line = Path(Line(A, B))
+    ab_line = Path(Line(a, b))
-    number_of_intersections = len(AB_line.intersect(path2))
+    number_of_intersections = len(ab_line.intersect(path2))
     if number_of_intersections % 2:  # if number of intersections is odd
         return True
     else:

examples/distance-between-two-svg-paths-example.py

@@ -1,13 +1,16 @@
-from svgpathtools import *
+from svgpathtools import disvg, Line, CubicBezier
+from scipy.optimize import fminbound
 
 # create some example paths
 path1 = CubicBezier(1,2+3j,3-5j,4+1j)
 path2 = path1.rotated(60).translated(3)
 
-# find minimizer
+
-from scipy.optimize import fminbound
 def dist(t):
 	return path1.radialrange(path2.point(t))[0][0]
+
+
+# find minimizer
 T2 = fminbound(dist, 0, 1)
 
 # Let's do a visual check

setup.py

@@ -3,7 +3,7 @@ import codecs
 import os
 
 
-VERSION = '1.4.4'
+VERSION = '1.6.1'
 AUTHOR_NAME = 'Andy Port'
 AUTHOR_EMAIL = 'AndyAPort@gmail.com'
 GITHUB = 'https://github.com/mathandy/svgpathtools'
@@ -47,6 +47,7 @@ setup(name='svgpathtools',
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
+            "Programming Language :: Python :: 3.11",
             "Topic :: Multimedia :: Graphics :: Editors :: Vector-Based",
             "Topic :: Scientific/Engineering",
             "Topic :: Scientific/Engineering :: Image Recognition",

svgpathtools/__init__.py

@@ -17,6 +17,6 @@ from .document import (Document, CONVERSIONS, CONVERT_ONLY_PATHS,
 from .svg_io_sax import SaxDocument
 
 try:
-    from .svg_to_paths import svg2paths, svg2paths2
+    from .svg_to_paths import svg2paths, svg2paths2, svgstr2paths
 except ImportError:
     pass

svgpathtools/document.py

@@ -13,7 +13,7 @@ An Historic Note:
 Example:
     Typical usage looks something like the following.
 
-        >> from svgpathtools import *
+        >> from svgpathtools import Document
         >> doc = Document('my_file.html')
         >> for path in doc.paths():
         >>     # Do something with the transformed Path object.
@@ -41,8 +41,10 @@ import xml.etree.ElementTree as etree
 from xml.etree.ElementTree import Element, SubElement, register_namespace
 from xml.dom.minidom import parseString
 import warnings
+from io import StringIO
 from tempfile import gettempdir
 from time import time
+import numpy as np
 
 # Internal dependencies
 from .parser import parse_path
@@ -50,13 +52,17 @@ from .parser import parse_transform
 from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd,
                            polyline2pathd, polygon2pathd, rect2pathd)
 from .misctools import open_in_browser
-from .path import *
+from .path import transform, Path, is_path_segment
 
 # To maintain forward/backward compatibility
 try:
-    str = basestring
+    string = basestring
 except NameError:
-    pass
+    string = str
+try:
+    from os import PathLike
+except ImportError:
+    PathLike = string
 
 # Let xml.etree.ElementTree know about the SVG namespace
 SVG_NAMESPACE = {'svg': 'http://www.w3.org/2000/svg'}
@@ -235,13 +241,14 @@ class Document:
         The output Path objects will be transformed based on their parent groups.
         
         Args:
-            filepath (str): The filepath of the DOM-style object.
+            filepath (str or file-like): The filepath of the
+                DOM-style object or a file-like object containing it.
         """
 
-        # remember location of original svg file
+        # strings are interpreted as file location everything else is treated as
-        self.original_filepath = filepath
+        # file-like object and passed to the xml parser directly
-        if filepath is not None and os.path.dirname(filepath) == '':
+        from_filepath = isinstance(filepath, string) or isinstance(filepath, PathLike)
-            self.original_filepath = os.path.join(os.getcwd(), filepath)
+        self.original_filepath = os.path.abspath(filepath) if from_filepath else None
 
         if filepath is None:
             self.tree = etree.ElementTree(Element('svg'))
@@ -251,6 +258,14 @@ class Document:
 
         self.root = self.tree.getroot()
 
+    @classmethod
+    def from_svg_string(cls, svg_string):
+        """Constructor for creating a Document object from a string."""
+        # wrap string into StringIO object
+        svg_file_obj = StringIO(svg_string)
+        # create document from file object
+        return Document(svg_file_obj)
+
     def paths(self, group_filter=lambda x: True,
               path_filter=lambda x: True, path_conversions=CONVERSIONS):
         """Returns a list of all paths in the document.
@@ -263,7 +278,7 @@ class Document:
 
     def paths_from_group(self, group, recursive=True, group_filter=lambda x: True,
                          path_filter=lambda x: True, path_conversions=CONVERSIONS):
-        if all(isinstance(s, str) for s in group):
+        if all(isinstance(s, string) for s in group):
             # If we're given a list of strings, assume it represents a
             # nested sequence
             group = self.get_group(group)
@@ -308,7 +323,7 @@ class Document:
             path_svg = path.d()
         elif is_path_segment(path):
             path_svg = Path(path).d()
-        elif isinstance(path, str):
+        elif isinstance(path, string):
             # Assume this is a valid d-string.
             # TODO: Should we sanity check the input string?
             path_svg = path

svgpathtools/path.py

@@ -43,8 +43,8 @@ except NameError:
 COMMANDS = set('MmZzLlHhVvCcSsQqTtAa')
 UPPERCASE = set('MZLHVCSQTA')
 
-COMMAND_RE = re.compile("([MmZzLlHhVvCcSsQqTtAa])")
+COMMAND_RE = re.compile(r"([MmZzLlHhVvCcSsQqTtAa])")
-FLOAT_RE = re.compile("[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?")
+FLOAT_RE = re.compile(r"[-+]?[0-9]*\.?[0-9]+(?:[eE][-+]?[0-9]+)?")
 
 # Default Parameters ##########################################################
 
@@ -189,7 +189,6 @@ def bez2poly(bez, numpy_ordering=True, return_poly1d=False):
 def transform_segments_together(path, transformation):
     """Makes sure that, if joints were continuous, they're kept that way."""
     transformed_segs = [transformation(seg) for seg in path]
-    joint_was_continuous = [sa.end == sb.start for sa, sb in path.joints()]
 
     for i, (sa, sb) in enumerate(path.joints()):
         if sa.end == sb.start:
@@ -202,7 +201,7 @@ def rotate(curve, degs, origin=None):
     (a complex number).  By default origin is either `curve.point(0.5)`, or in
     the case that curve is an Arc object, `origin` defaults to `curve.center`.
     """
-    def transform(z):
+    def rotate_point(z):
         return exp(1j*radians(degs))*(z - origin) + origin
 
     if origin is None:
@@ -215,10 +214,10 @@ def rotate(curve, degs, origin=None):
         transformation = lambda seg: rotate(seg, degs, origin=origin)
         return transform_segments_together(curve, transformation)
     elif is_bezier_segment(curve):
-        return bpoints2bezier([transform(bpt) for bpt in curve.bpoints()])
+        return bpoints2bezier([rotate_point(bpt) for bpt in curve.bpoints()])
     elif isinstance(curve, Arc):
-        new_start = transform(curve.start)
+        new_start = rotate_point(curve.start)
-        new_end = transform(curve.end)
+        new_end = rotate_point(curve.end)
         new_rotation = curve.rotation + degs
         return Arc(new_start, radius=curve.radius, rotation=new_rotation,
                    large_arc=curve.large_arc, sweep=curve.sweep, end=new_end)
@@ -295,6 +294,10 @@ def scale(curve, sx, sy=None, origin=0j):
 
 def transform(curve, tf):
     """Transforms the curve by the homogeneous transformation matrix tf"""
+
+    if all((tf == np.eye(3)).ravel()):
+        return curve  # tf is identity, return curve as is
+
     def to_point(p):
         return np.array([[p.real], [p.imag], [1.0]])
 
@@ -315,7 +318,7 @@ def transform(curve, tf):
         new_start = to_complex(tf.dot(to_point(curve.start)))
         new_end = to_complex(tf.dot(to_point(curve.end)))
         
-        # Based on https://math.stackexchange.com/questions/2349726/compute-the-major-and-minor-axis-of-an-ellipse-after-linearly-transforming-it
+        # Based on https://math.stackexchange.com/questions/2349726/
         rx2 = curve.radius.real ** 2
         ry2 = curve.radius.imag ** 2
 
@@ -335,10 +338,14 @@ def transform(curve, tf):
 
         if new_radius.real == 0 or new_radius.imag == 0 :
             return Line(new_start, new_end)
-        else : 
+        else:
+            if tf[0][0] * tf[1][1] >= 0.0:
+                new_sweep = curve.sweep
+            else:
+                new_sweep = not curve.sweep
             return Arc(new_start, radius=new_radius, rotation=curve.rotation + rot,
-                       large_arc=curve.large_arc, sweep=curve.sweep, end=new_end,
+                       large_arc=curve.large_arc, sweep=new_sweep, end=new_end,
-                       autoscale_radius=False)
+                       autoscale_radius=True)
 
     else:
         raise TypeError("Input `curve` should be a Path, Line, "
@@ -708,6 +715,19 @@ class Line(object):
         Note: This will fail if the two segments coincide for more than a
         finite collection of points.
         tol is not used."""
+        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
+            ob = [e.real for e in other_seg.bpoints()]
+            sb = [e.real for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
+            ob = [e.imag for e in other_seg.bpoints()]
+            sb = [e.imag for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
         if isinstance(other_seg, Line):
             assert other_seg.end != other_seg.start and self.end != self.start
             assert self != other_seg
@@ -1035,6 +1055,19 @@ class QuadraticBezier(object):
         self.point(t1) == other_seg.point(t2).
         Note: This will fail if the two segments coincide for more than a
         finite collection of points."""
+        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
+            ob = [e.real for e in other_seg.bpoints()]
+            sb = [e.real for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
+            ob = [e.imag for e in other_seg.bpoints()]
+            sb = [e.imag for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
         if isinstance(other_seg, Line):
             return bezier_by_line_intersections(self, other_seg)
         elif isinstance(other_seg, QuadraticBezier):
@@ -1295,6 +1328,19 @@ class CubicBezier(object):
             This will fail if the two segments coincide for more than a
             finite collection of points.
         """
+        if isinstance(other_seg, (Line, QuadraticBezier, CubicBezier)):
+            ob = [e.real for e in other_seg.bpoints()]
+            sb = [e.real for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
+            ob = [e.imag for e in other_seg.bpoints()]
+            sb = [e.imag for e in self.bpoints()]
+            if min(ob) > max(sb):
+                return []
+            if max(ob) < min(sb):
+                return []
         if isinstance(other_seg, Line):
             return bezier_by_line_intersections(self, other_seg)
         elif (isinstance(other_seg, QuadraticBezier) or
@@ -1352,7 +1398,7 @@ class CubicBezier(object):
 class Arc(object):
     def __init__(self, start, radius, rotation, large_arc, sweep, end,
                  autoscale_radius=True):
-        """
+        r"""
         This should be thought of as a part of an ellipse connecting two
         points on that ellipse, start and end.
         Parameters
@@ -2526,7 +2572,7 @@ class Path(MutableSequence):
 
         # Shortcuts
         if len(self._segments) == 0:
-            return None
+            raise ValueError("This path contains no segments!")
         if pos == 0.0:
             return self._segments[0].point(pos)
         if pos == 1.0:
@@ -2543,6 +2589,7 @@ class Path(MutableSequence):
                     segment_end - segment_start)
                 return segment.point(segment_pos)
             segment_start = segment_end
+        raise RuntimeError("Something has gone wrong.  Could not compute Path.point({}) for path {}".format(pos, self))
 
     def length(self, T0=0, T1=1, error=LENGTH_ERROR, min_depth=LENGTH_MIN_DEPTH):
         self._calc_lengths(error=error, min_depth=min_depth)

svgpathtools/svg_io_sax.py

@@ -6,6 +6,7 @@
 from __future__ import division, absolute_import, print_function
 import os
 from xml.etree.ElementTree import iterparse, Element, ElementTree, SubElement
+import numpy as np
 
 # Internal dependencies
 from .parser import parse_path
@@ -13,13 +14,13 @@ from .parser import parse_transform
 from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd,
                            polyline2pathd, polygon2pathd, rect2pathd)
 from .misctools import open_in_browser
-from .path import *
+from .path import transform
 
 # To maintain forward/backward compatibility
 try:
-    str = basestring
+    string = basestring
 except NameError:
-    pass
+    string = str
 
 NAME_SVG = "svg"
 ATTR_VERSION = "version"
@@ -164,17 +165,17 @@ class SaxDocument:
             if matrix is not None and not np.all(np.equal(matrix, identity)):
                 matrix_string = "matrix("
                 matrix_string += " "
-                matrix_string += str(matrix[0][0])
+                matrix_string += string(matrix[0][0])
                 matrix_string += " "
-                matrix_string += str(matrix[1][0])
+                matrix_string += string(matrix[1][0])
                 matrix_string += " "
-                matrix_string += str(matrix[0][1])
+                matrix_string += string(matrix[0][1])
                 matrix_string += " "
-                matrix_string += str(matrix[1][1])
+                matrix_string += string(matrix[1][1])
                 matrix_string += " "
-                matrix_string += str(matrix[0][2])
+                matrix_string += string(matrix[0][2])
                 matrix_string += " "
-                matrix_string += str(matrix[1][2])
+                matrix_string += string(matrix[1][2])
                 matrix_string += ")"
                 path.set(ATTR_TRANSFORM, matrix_string)
             if ATTR_DATA in values:

svgpathtools/svg_to_paths.py

@@ -4,8 +4,13 @@ The main tool being the svg2paths() function."""
 # External dependencies
 from __future__ import division, absolute_import, print_function
 from xml.dom.minidom import parse
-from os import path as os_path, getcwd
+import os
+from io import StringIO
 import re
+try:
+    from os import PathLike as FilePathLike
+except ImportError:
+    FilePathLike = str
 
 # Internal dependencies
 from .parser import parse_path
@@ -46,7 +51,7 @@ def ellipse2pathd(ellipse):
     d += 'a' + str(rx) + ',' + str(ry) + ' 0 1,0 ' + str(2 * rx) + ',0'
     d += 'a' + str(rx) + ',' + str(ry) + ' 0 1,0 ' + str(-2 * rx) + ',0'
 
-    return d
+    return d + 'z'
 
 
 def polyline2pathd(polyline, is_polygon=False):
@@ -144,7 +149,9 @@ def svg2paths(svg_file_location,
     SVG Path, Line, Polyline, Polygon, Circle, and Ellipse elements.
 
     Args:
-        svg_file_location (string): the location of the svg file
+        svg_file_location (string or file-like object): the location of the
+            svg file on disk or a file-like object containing the content of a
+            svg file
         return_svg_attributes (bool): Set to True and a dictionary of
             svg-attributes will be extracted and returned.  See also the 
             `svg2paths2()` function.
@@ -168,8 +175,10 @@ def svg2paths(svg_file_location,
         list: The list of corresponding path attribute dictionaries.
         dict (optional): A dictionary of svg-attributes (see `svg2paths2()`).
     """
-    if os_path.dirname(svg_file_location) == '':
+    # strings are interpreted as file location everything else is treated as
-        svg_file_location = os_path.join(getcwd(), svg_file_location)
+    # file-like object and passed to the xml parser directly
+    from_filepath = isinstance(svg_file_location, str) or isinstance(svg_file_location, FilePathLike)
+    svg_file_location = os.path.abspath(svg_file_location) if from_filepath else svg_file_location
 
     doc = parse(svg_file_location)
 
@@ -249,3 +258,26 @@ def svg2paths2(svg_file_location,
                      convert_polylines_to_paths=convert_polylines_to_paths,
                      convert_polygons_to_paths=convert_polygons_to_paths,
                      convert_rectangles_to_paths=convert_rectangles_to_paths)
+
+
+def svgstr2paths(svg_string,
+               return_svg_attributes=False,
+               convert_circles_to_paths=True,
+               convert_ellipses_to_paths=True,
+               convert_lines_to_paths=True,
+               convert_polylines_to_paths=True,
+               convert_polygons_to_paths=True,
+               convert_rectangles_to_paths=True):
+    """Convenience function; identical to svg2paths() except that it takes the
+    svg object as string.  See svg2paths() docstring for more
+    info."""
+    # wrap string into StringIO object
+    svg_file_obj = StringIO(svg_string)
+    return svg2paths(svg_file_location=svg_file_obj,
+                     return_svg_attributes=return_svg_attributes,
+                     convert_circles_to_paths=convert_circles_to_paths,
+                     convert_ellipses_to_paths=convert_ellipses_to_paths,
+                     convert_lines_to_paths=convert_lines_to_paths,
+                     convert_polylines_to_paths=convert_polylines_to_paths,
+                     convert_polygons_to_paths=convert_polygons_to_paths,
+                     convert_rectangles_to_paths=convert_rectangles_to_paths)

test/negative-scale.svg

@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100mm" height="100mm" viewBox="-100 -200 500 500" xmlns="http://www.w3.org/2000/svg" version="1.1">
+    <g id="Sketch" transform="scale(1,-1)">
+        <path id="slot" d="
+            M 0 10
+            L 0 80
+            A 30 30 0 1 0 0 140
+            A 10 10 0 0 1 0 100
+            L 100 100
+            A 10 10 0 1 1 100 140
+            A 30 30 0 0 0 100 80
+            L 100 10
+            A 10 10 0 0 0 90 0
+            L 10 0
+            A 10 10 0 0 0 0 10
+        " stroke="#ff0000" stroke-width="0.35 px"/>
+    </g>
+</svg>

test/test_bezier.py

@@ -1,7 +1,7 @@
 from __future__ import division, absolute_import, print_function
 import numpy as np
 import unittest
-from svgpathtools.bezier import *
+from svgpathtools.bezier import bezier_point, bezier2polynomial, polynomial2bezier
 from svgpathtools.path import bpoints2bezier
 
 

test/test_document.py

@@ -0,0 +1,54 @@
+from __future__ import division, absolute_import, print_function
+import unittest
+from svgpathtools import Document
+from io import StringIO
+from io import open  # overrides build-in open for compatibility with python2
+from os.path import join, dirname
+from sys import version_info
+
+
+class TestDocument(unittest.TestCase):
+    def test_from_file_path_string(self):
+        """Test reading svg from file provided as path"""
+        doc = Document(join(dirname(__file__), 'polygons.svg'))
+
+        self.assertEqual(len(doc.paths()), 2)
+
+    def test_from_file_path(self):
+        """Test reading svg from file provided as path"""
+        if version_info >= (3, 6):
+            import pathlib
+            doc = Document(pathlib.Path(__file__).parent / 'polygons.svg')
+
+            self.assertEqual(len(doc.paths()), 2)
+
+    def test_from_file_object(self):
+        """Test reading svg from file object that has already been opened"""
+        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
+            doc = Document(file)
+
+            self.assertEqual(len(doc.paths()), 2)
+
+    def test_from_stringio(self):
+        """Test reading svg object contained in a StringIO object"""
+        with open(join(dirname(__file__), 'polygons.svg'),
+                  'r', encoding='utf-8') as file:
+            # read entire file into string
+            file_content = file.read()
+            # prepare stringio object
+            file_as_stringio = StringIO(file_content)
+
+            doc = Document(file_as_stringio)
+
+            self.assertEqual(len(doc.paths()), 2)
+
+    def test_from_string(self):
+        """Test reading svg object contained in a string"""
+        with open(join(dirname(__file__), 'polygons.svg'),
+                  'r', encoding='utf-8') as file:
+            # read entire file into string
+            file_content = file.read()
+
+            doc = Document.from_svg_string(file_content)
+
+            self.assertEqual(len(doc.paths()), 2)

test/test_generation.py

@@ -2,7 +2,7 @@
 #------------------------------------------------------------------------------
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import *
+from svgpathtools import parse_path
 
 
 class TestGeneration(unittest.TestCase):

test/test_groups.py

@@ -5,11 +5,15 @@ $ python -m unittest test.test_groups.TestGroups.test_group_flatten
 """
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import *
+from svgpathtools import Document, SVG_NAMESPACE, parse_path, Line, Arc
 from os.path import join, dirname
 import numpy as np
 
 
+# When an assert fails, show the full error message, don't truncate it.
+unittest.util._MAX_LENGTH = 999999999
+
+
 def get_desired_path(name, paths):
     return next(p for p in paths
                 if p.element.get('{some://testuri}name') == name)
@@ -42,6 +46,22 @@ class TestGroups(unittest.TestCase):
         self.check_values(tf.dot(v_s), actual.start)
         self.check_values(tf.dot(v_e), actual.end)
 
+    def test_group_transform(self):
+        # The input svg has a group transform of "scale(1,-1)", which
+        # can mess with Arc sweeps.
+        doc = Document(join(dirname(__file__), 'negative-scale.svg'))
+        path = doc.paths()[0]
+        self.assertEqual(path[0], Line(start=-10j, end=-80j))
+        self.assertEqual(path[1], Arc(start=-80j, radius=(30+30j), rotation=0.0, large_arc=True, sweep=True, end=-140j))
+        self.assertEqual(path[2], Arc(start=-140j, radius=(20+20j), rotation=0.0, large_arc=False, sweep=False, end=-100j))
+        self.assertEqual(path[3], Line(start=-100j, end=(100-100j)))
+        self.assertEqual(path[4], Arc(start=(100-100j), radius=(20+20j), rotation=0.0, large_arc=True, sweep=False, end=(100-140j)))
+        self.assertEqual(path[5], Arc(start=(100-140j), radius=(30+30j), rotation=0.0, large_arc=False, sweep=True, end=(100-80j)))
+        self.assertEqual(path[6], Line(start=(100-80j), end=(100-10j)))
+        self.assertEqual(path[7], Arc(start=(100-10j), radius=(10+10j), rotation=0.0, large_arc=False, sweep=True, end=(90+0j)))
+        self.assertEqual(path[8], Line(start=(90+0j), end=(10+0j)))
+        self.assertEqual(path[9], Arc(start=(10+0j), radius=(10+10j), rotation=0.0, large_arc=False, sweep=True, end=-10j))
+
     def test_group_flatten(self):
         # Test the Document.paths() function against the
         # groups.svg test file.

test/test_parsing.py

@@ -1,8 +1,9 @@
 # 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 *
+from svgpathtools import Path, Line, QuadraticBezier, CubicBezier, Arc, parse_path
 import svgpathtools
+
 import numpy as np
 
 

test/test_path.py

@@ -1,6 +1,7 @@
 # External dependencies
 from __future__ import division, absolute_import, print_function
 import os
+import time
 from sys import version_info
 import unittest
 from math import sqrt, pi
@@ -10,8 +11,12 @@ import random
 import warnings
 
 # Internal dependencies
-from svgpathtools import *
+from svgpathtools import (
-from svgpathtools.path import _NotImplemented4ArcException, bezier_radialrange
+    Line, QuadraticBezier, CubicBezier, Arc, Path, poly2bez, path_encloses_pt,
+    bpoints2bezier, closest_point_in_path, farthest_point_in_path,
+    is_bezier_segment, is_bezier_path, parse_path
+)
+from svgpathtools.path import bezier_radialrange
 
 # An important note for those doing any debugging:
 # ------------------------------------------------
@@ -1491,6 +1496,50 @@ class Test_intersect(unittest.TestCase):
             self.assertTrue(len(yix) == 1)
         ###################################################################
 
+    def test_random_intersections(self):
+        from random import Random
+        r = Random()
+        distance = 100
+        distribution = 10000
+        count = 500
+
+        def random_complex(offset_x=0.0, offset_y=0.0):
+            return complex(r.random() * distance + offset_x, r.random() * distance + offset_y)
+
+        def random_line():
+            offset_x = r.random() * distribution
+            offset_y = r.random() * distribution
+            return Line(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
+
+        def random_quad():
+            offset_x = r.random() * distribution
+            offset_y = r.random() * distribution
+            return QuadraticBezier(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
+
+        def random_cubic():
+            offset_x = r.random() * distribution
+            offset_y = r.random() * distribution
+            return CubicBezier(random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y), random_complex(offset_x, offset_y))
+
+        def random_path():
+            path = Path()
+            for i in range(count):
+                type_segment = random.randint(0, 3)
+                if type_segment == 0:
+                    path.append(random_line())
+                if type_segment == 1:
+                    path.append(random_quad())
+                if type_segment == 2:
+                    path.append(random_cubic())
+            return path
+
+        path1 = random_path()
+        path2 = random_path()
+        t = time.time()
+        intersections = path1.intersect(path2)
+        print("\nFound {} intersections in {} seconds.\n"
+              "".format(len(intersections), time.time() - t))
+
     def test_line_line_0(self):
         l0 = Line(start=(25.389999999999997+99.989999999999995j),
                   end=(25.389999999999997+90.484999999999999j))

test/test_polytools.py

@@ -4,7 +4,7 @@ import unittest
 import numpy as np
 
 # Internal dependencies
-from svgpathtools import *
+from svgpathtools import rational_limit
 
 
 class Test_polytools(unittest.TestCase):

test/test_sax_groups.py

@@ -1,6 +1,6 @@
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import *
+from svgpathtools import SaxDocument
 from os.path import join, dirname
 
 

test/test_svg2paths.py

@@ -1,10 +1,17 @@
 from __future__ import division, absolute_import, print_function
 import unittest
-from svgpathtools import *
+from svgpathtools import Path, Line, Arc, svg2paths, svgstr2paths
+from io import StringIO
+from io import open  # overrides build-in open for compatibility with python2
+import os
 from os.path import join, dirname
+from sys import version_info
+import tempfile
+import shutil
 
 from svgpathtools.svg_to_paths import rect2pathd
 
+
 class TestSVG2Paths(unittest.TestCase):
     def test_svg2paths_polygons(self):
 
@@ -53,8 +60,77 @@ class TestSVG2Paths(unittest.TestCase):
         self.assertTrue(path_circle==path_circle_correct)
         self.assertTrue(path_circle.isclosed())
 
+        # test for issue #198 (circles not being closed)
+        svg = u"""<?xml version="1.0" encoding="UTF-8"?>
+        <svg xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" width="40mm" height="40mm" 
+          viewBox="0 0 40 40" version="1.1">
+            
+          <g id="layer">
+            <circle id="c1" cx="20.000" cy="20.000" r="11.000" />
+            <circle id="c2" cx="20.000" cy="20.000" r="5.15" />
+          </g>
+        </svg>"""
+        tmpdir = tempfile.mkdtemp()
+        svgfile = os.path.join(tmpdir, 'test.svg')
+        with open(svgfile, 'w') as f:
+            f.write(svg)
+        paths, _ = svg2paths(svgfile)
+        self.assertEqual(len(paths), 2)
+        self.assertTrue(paths[0].isclosed())
+        self.assertTrue(paths[1].isclosed())
+        shutil.rmtree(tmpdir)
+
     def test_rect2pathd(self):
         non_rounded = {"x":"10", "y":"10", "width":"100","height":"100"}
         self.assertEqual(rect2pathd(non_rounded), 'M10.0 10.0 L 110.0 10.0 L 110.0 110.0 L 10.0 110.0 z')
         rounded = {"x":"10", "y":"10", "width":"100","height":"100", "rx":"15", "ry": "12"}
         self.assertEqual(rect2pathd(rounded), "M 25.0 10.0 L 95.0 10.0 A 15.0 12.0 0 0 1 110.0 22.0 L 110.0 98.0 A 15.0 12.0 0 0 1 95.0 110.0 L 25.0 110.0 A 15.0 12.0 0 0 1 10.0 98.0 L 10.0 22.0 A 15.0 12.0 0 0 1 25.0 10.0 z")
+
+    def test_from_file_path_string(self):
+        """Test reading svg from file provided as path"""
+        paths, _ = svg2paths(join(dirname(__file__), 'polygons.svg'))
+
+        self.assertEqual(len(paths), 2)
+
+    def test_from_file_path(self):
+        """Test reading svg from file provided as pathlib POSIXPath"""
+        if version_info >= (3, 6):
+            import pathlib
+            paths, _ = svg2paths(pathlib.Path(__file__).parent / 'polygons.svg')
+
+            self.assertEqual(len(paths), 2)
+
+    def test_from_file_object(self):
+        """Test reading svg from file object that has already been opened"""
+        with open(join(dirname(__file__), 'polygons.svg'), 'r') as file:
+            paths, _ = svg2paths(file)
+
+            self.assertEqual(len(paths), 2)
+
+    def test_from_stringio(self):
+        """Test reading svg object contained in a StringIO object"""
+        with open(join(dirname(__file__), 'polygons.svg'),
+                  'r', encoding='utf-8') as file:
+            # read entire file into string
+            file_content = file.read()
+            # prepare stringio object
+            file_as_stringio = StringIO(file_content)
+
+            paths, _ = svg2paths(file_as_stringio)
+
+            self.assertEqual(len(paths), 2)
+
+    def test_from_string(self):
+        """Test reading svg object contained in a string"""
+        with open(join(dirname(__file__), 'polygons.svg'),
+                  'r', encoding='utf-8') as file:
+            # read entire file into string
+            file_content = file.read()
+
+            paths, _ = svgstr2paths(file_content)
+
+            self.assertEqual(len(paths), 2)
+
+
+if __name__ == '__main__':
+    unittest.main()