aesthetic cleanup
Andy Port
parent
b1dfc9e8f7
commit
7ebc56a831
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@ -20,7 +20,8 @@ Example:
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>> path = result.path
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>> # Do something with the transformed Path object.
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>> element = result.element
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>> # Inspect the raw SVG element. This gives access to the path's attributes
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>> # Inspect the raw SVG element. This gives access to the
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>> # path's attributes
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>> transform = result.transform
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>> # Use the transform that was applied to the path.
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>> foo(doc.tree) # do stuff using ElementTree's functionality
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@ -38,14 +39,14 @@ from __future__ import division, absolute_import, print_function
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import os
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import collections
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import xml.etree.ElementTree as etree
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from xml.etree.ElementTree import Element, SubElement, register_namespace, _namespace_map
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from xml.etree.ElementTree import Element, SubElement, register_namespace
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import warnings
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# Internal dependencies
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from .parser import parse_path
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from .parser import parse_transform
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from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd, polyline2pathd,
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polygon2pathd, rect2pathd)
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from .svg_to_paths import (path2pathd, ellipse2pathd, line2pathd,
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polyline2pathd, polygon2pathd, rect2pathd)
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from .misctools import open_in_browser
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from .path import *
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@ -73,58 +74,71 @@ CONVERT_ONLY_PATHS = {'path': path2pathd}
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SVG_GROUP_TAG = 'svg:g'
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def flatten_all_paths(
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group,
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group_filter=lambda x: True,
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path_filter=lambda x: True,
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path_conversions=CONVERSIONS,
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def flatten_all_paths(group, group_filter=lambda x: True,
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path_filter=lambda x: True, path_conversions=CONVERSIONS,
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group_search_xpath=SVG_GROUP_TAG):
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"""Returns the paths inside a group (recursively), expressing the paths in the base coordinates.
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"""Returns the paths inside a group (recursively), expressing the
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paths in the base coordinates.
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Note that if the group being passed in is nested inside some parent group(s), we cannot take the parent group(s)
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into account, because xml.etree.Element has no pointer to its parent. You should use Document.flatten_group(group)
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to flatten a specific nested group into the root coordinates.
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Note that if the group being passed in is nested inside some parent
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group(s), we cannot take the parent group(s) into account, because
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xml.etree.Element has no pointer to its parent. You should use
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Document.flatten_group(group) to flatten a specific nested group into
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the root coordinates.
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Args:
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group is an Element
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path_conversions (dict): A dictionary to convert from an SVG element to a path data string. Any element tags
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that are not included in this dictionary will be ignored (including the `path` tag).
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To only convert explicit path elements, pass in path_conversions=CONVERT_ONLY_PATHS.
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path_conversions (dict):
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A dictionary to convert from an SVG element to a path data
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string. Any element tags that are not included in this
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dictionary will be ignored (including the `path` tag). To
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only convert explicit path elements, pass in
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`path_conversions=CONVERT_ONLY_PATHS`.
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"""
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if not isinstance(group, Element):
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raise TypeError('Must provide an xml.etree.Element object. Instead you provided {0}'.format(type(group)))
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raise TypeError('Must provide an xml.etree.Element object. '
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'Instead you provided {0}'.format(type(group)))
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# Stop right away if the group_selector rejects this group
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if not group_filter(group):
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return []
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# To handle the transforms efficiently, we'll traverse the tree of groups depth-first using a stack of tuples.
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# The first entry in the tuple is a group element and the second entry is its transform. As we pop each entry in
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# the stack, we will add all its child group elements to the stack.
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StackElement = collections.namedtuple('StackElement', ['group', 'transform'])
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# To handle the transforms efficiently, we'll traverse the tree of
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# groups depth-first using a stack of tuples.
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# The first entry in the tuple is a group element and the second
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# entry is its transform. As we pop each entry in the stack, we
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# will add all its child group elements to the stack.
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StackElement = collections.namedtuple('StackElement',
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['group', 'transform'])
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def new_stack_element(element, last_tf):
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return StackElement(element, last_tf.dot(parse_transform(element.get('transform'))))
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return StackElement(element, last_tf.dot(
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parse_transform(element.get('transform'))))
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def get_relevant_children(parent, last_tf):
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children = []
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for elem in filter(group_filter, parent.iterfind(group_search_xpath, SVG_NAMESPACE)):
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for elem in filter(group_filter,
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parent.iterfind(group_search_xpath, SVG_NAMESPACE)):
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children.append(new_stack_element(elem, last_tf))
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return children
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stack = [new_stack_element(group, np.identity(3))]
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FlattenedPath = collections.namedtuple('FlattenedPath', ['path', 'element', 'transform'])
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FlattenedPath = collections.namedtuple('FlattenedPath',
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['path', 'element', 'transform'])
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paths = []
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while stack:
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top = stack.pop()
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# For each element type that we know how to convert into path data, parse the element after confirming that
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# the path_filter accepts it.
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# For each element type that we know how to convert into path
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# data, parse the element after confirming that the path_filter
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# accepts it.
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for key, converter in path_conversions.items():
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for path_elem in filter(path_filter, top.group.iterfind('svg:'+key, SVG_NAMESPACE)):
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path_tf = top.transform.dot(parse_transform(path_elem.get('transform')))
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for path_elem in filter(path_filter, top.group.iterfind(
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'svg:'+key, SVG_NAMESPACE)):
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path_tf = top.transform.dot(
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parse_transform(path_elem.get('transform')))
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path = transform(parse_path(converter(path_elem)), path_tf)
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paths.append(FlattenedPath(path, path_elem, path_tf))
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@ -143,16 +157,20 @@ def flatten_group(
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group_search_xpath=SVG_GROUP_TAG):
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"""Flatten all the paths in a specific group.
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The paths will be flattened into the 'root' frame. Note that root needs to be
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an ancestor of the group that is being flattened. Otherwise, no paths will be returned."""
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The paths will be flattened into the 'root' frame. Note that root
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needs to be an ancestor of the group that is being flattened.
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Otherwise, no paths will be returned."""
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if not any(group_to_flatten is descendant for descendant in root.iter()):
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warnings.warn('The requested group_to_flatten is not a descendant of root')
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# We will shortcut here, because it is impossible for any paths to be returned anyhow.
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warnings.warn('The requested group_to_flatten is not a '
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'descendant of root')
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# We will shortcut here, because it is impossible for any paths
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# to be returned anyhow.
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return []
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# We create a set of the unique IDs of each element that we wish to flatten, if those elements are groups.
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# Any groups outside of this set will be skipped while we flatten the paths.
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# We create a set of the unique IDs of each element that we wish to
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# flatten, if those elements are groups. Any groups outside of this
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# set will be skipped while we flatten the paths.
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desired_groups = set()
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if recursive:
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for group in group_to_flatten.iter():
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@ -163,7 +181,8 @@ def flatten_group(
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def desired_group_filter(x):
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return (id(x) in desired_groups) and group_filter(x)
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return flatten_all_paths(root, desired_group_filter, path_filter, path_conversions, group_search_xpath)
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return flatten_all_paths(root, desired_group_filter, path_filter,
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path_conversions, group_search_xpath)
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class Document:
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@ -199,8 +218,10 @@ class Document:
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group_filter=lambda x: True,
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path_filter=lambda x: True,
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path_conversions=CONVERSIONS):
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"""Forward the tree of this document into the more general flatten_all_paths function and return the result."""
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return flatten_all_paths(self.tree.getroot(), group_filter, path_filter, path_conversions)
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"""Forward the tree of this document into the more general
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flatten_all_paths function and return the result."""
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return flatten_all_paths(self.tree.getroot(), group_filter,
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path_filter, path_conversions)
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def flatten_group(self,
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group,
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@ -209,33 +230,40 @@ class Document:
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path_filter=lambda x: True,
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path_conversions=CONVERSIONS):
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if all(isinstance(s, str) for s in group):
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# If we're given a list of strings, assume it represents a nested sequence
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# If we're given a list of strings, assume it represents a
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# nested sequence
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group = self.get_or_add_group(group)
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elif not isinstance(group, Element):
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raise TypeError('Must provide a list of strings that represent a nested group name, '
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'or provide an xml.etree.Element object. Instead you provided {0}'.format(group))
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raise TypeError(
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'Must provide a list of strings that represent a nested '
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'group name, or provide an xml.etree.Element object. '
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'Instead you provided {0}'.format(group))
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return flatten_group(group, self.tree.getroot(), recursive, group_filter, path_filter, path_conversions)
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return flatten_group(group, self.tree.getroot(), recursive,
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group_filter, path_filter, path_conversions)
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def add_path(self, path, attribs=None, group=None):
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"""Add a new path to the SVG."""
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# If we are not given a parent, assume that the path does not have a group
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# If not given a parent, assume that the path does not have a group
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if group is None:
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group = self.tree.getroot()
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# If we are given a list of strings (one or more), assume it represents a sequence of nested group names
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# If given a list of strings (one or more), assume it represents
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# a sequence of nested group names
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elif all(isinstance(elem, str) for elem in group):
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group = self.get_or_add_group(group)
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elif not isinstance(group, Element):
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raise TypeError('Must provide a list of strings or an xml.etree.Element object. '
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'Instead you provided {0}'.format(group))
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raise TypeError(
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'Must provide a list of strings or an xml.etree.Element '
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'object. Instead you provided {0}'.format(group))
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else:
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# Make sure that the group belongs to this Document object
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if not self.contains_group(group):
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warnings.warn('The requested group does not belong to this Document')
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warnings.warn('The requested group does not belong to '
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'this Document')
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# TODO: It might be better to use duck-typing here with a try-except
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if isinstance(path, Path):
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@ -243,11 +271,13 @@ class Document:
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elif is_path_segment(path):
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path_svg = Path(path).d()
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elif isinstance(path, str):
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# Assume this is a valid d-string. TODO: Should we sanity check the input string?
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# Assume this is a valid d-string.
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# TODO: Should we sanity check the input string?
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path_svg = path
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else:
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raise TypeError('Must provide a Path, a path segment type, or a valid SVG path d-string. '
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'Instead you provided {0}'.format(path))
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raise TypeError(
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'Must provide a Path, a path segment type, or a valid '
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'SVG path d-string. Instead you provided {0}'.format(path))
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if attribs is None:
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attribs = {}
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@ -262,16 +292,20 @@ class Document:
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return any(group is owned for owned in self.tree.iter())
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def get_or_add_group(self, nested_names, name_attr='id'):
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"""Get a group from the tree, or add a new one with the given name structure.
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"""Get a group from the tree, or add a new one with the given
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name structure.
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*nested_names* is a list of strings which represent group names. Each group name will be nested inside of the
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previous group name.
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`nested_names` is a list of strings which represent group names.
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Each group name will be nested inside of the previous group name.
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*name_attr* is the group attribute that is being used to represent the group's name. Default is 'id', but some
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SVGs may contain custom name labels, like 'inkscape:label'.
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`name_attr` is the group attribute that is being used to
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represent the group's name. Default is 'id', but some SVGs may
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contain custom name labels, like 'inkscape:label'.
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Returns the requested group. If the requested group did not exist, this function will create it, as well as all
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parent groups that it requires. All created groups will be left with blank attributes.
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Returns the requested group. If the requested group did not
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exist, this function will create it, as well as all parent
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groups that it requires. All created groups will be left with
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blank attributes.
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"""
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group = self.tree.getroot()
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@ -285,14 +319,15 @@ class Document:
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break
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if prev_group is group:
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# The group we're looking for does not exist, so let's create the group structure
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# The group we're looking for does not exist, so let's
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# create the group structure
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nested_names.insert(0, next_name)
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while nested_names:
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next_name = nested_names.pop(0)
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group = self.add_group({'id': next_name}, group)
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# Now nested_names will be empty, so the topmost while-loop will end
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# Now nested_names will be empty, so the topmost
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# while-loop will end
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return group
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def add_group(self, group_attribs=None, parent=None):
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@ -300,14 +335,16 @@ class Document:
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if parent is None:
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parent = self.tree.getroot()
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elif not self.contains_group(parent):
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warnings.warn('The requested group {0} does not belong to this Document'.format(parent))
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warnings.warn('The requested group {0} does not belong to '
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'this Document'.format(parent))
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if group_attribs is None:
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group_attribs = {}
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else:
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group_attribs = group_attribs.copy()
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return SubElement(parent, '{{{0}}}g'.format(SVG_NAMESPACE['svg']), group_attribs)
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return SubElement(parent, '{{{0}}}g'.format(
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SVG_NAMESPACE['svg']), group_attribs)
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def save(self, filename=None):
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if filename is None:
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@ -269,7 +269,8 @@ def transform(curve, tf):
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if isinstance(curve, Path):
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return Path(*[transform(segment, tf) for segment in curve])
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elif is_bezier_segment(curve):
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return bpoints2bezier([to_complex(tf.dot(to_point(p))) for p in curve.bpoints()])
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return bpoints2bezier([to_complex(tf.dot(to_point(p)))
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for p in curve.bpoints()])
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elif isinstance(curve, Arc):
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new_start = to_complex(tf.dot(to_point(curve.start)))
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new_end = to_complex(tf.dot(to_point(curve.end)))
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@ -458,12 +459,15 @@ def inv_arclength(curve, s, s_tol=ILENGTH_S_TOL, maxits=ILENGTH_MAXITS,
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return 1
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if isinstance(curve, Path):
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seg_lengths = [seg.length(error=error, min_depth=min_depth) for seg in curve]
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seg_lengths = [seg.length(error=error, min_depth=min_depth)
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for seg in curve]
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lsum = 0
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# Find which segment the point we search for is located on
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for k, len_k in enumerate(seg_lengths):
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if lsum <= s <= lsum + len_k:
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t = inv_arclength(curve[k], s - lsum, s_tol=s_tol, maxits=maxits, error=error, min_depth=min_depth)
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t = inv_arclength(curve[k], s - lsum, s_tol=s_tol,
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maxits=maxits, error=error,
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min_depth=min_depth)
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return curve.t2T(k, t)
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lsum += len_k
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return 1
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@ -1694,7 +1698,6 @@ class Arc(object):
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xmin = max(xtrema)
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return min(xtrema), max(xtrema), min(ytrema), max(ytrema)
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def split(self, t):
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"""returns two segments, whose union is this segment and which join
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at self.point(t)."""
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@ -1716,48 +1719,46 @@ class Arc(object):
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and maximize, respectively, the distance,
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d = |self.point(t)-origin|."""
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u1orig = self.u1transform(origin)
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if abs(u1orig) == 1: # origin lies on ellipse
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t = self.phase2t(phase(u1orig))
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d_min = 0
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# Transform to a coordinate system where the ellipse is centered
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# at the origin and its axes are horizontal/vertical
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zeta0 = self.centeriso(origin)
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a, b = self.radius.real, self.radius.imag
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x0, y0 = zeta0.real, zeta0.imag
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# Find t s.t. z'(t)
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a2mb2 = (a**2 - b**2)
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if u1orig.imag: # x != x0
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coeffs = [a2mb2**2,
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2*a2mb2*b**2*y0,
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(-a**4 + (2*a**2 - b**2 + y0**2)*b**2 + x0**2)*b**2,
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-2*a2mb2*b**4*y0,
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-b**6*y0**2]
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ys = polyroots(coeffs, realroots=True,
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condition=lambda r: -b <= r <= b)
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xs = (a*sqrt(1 - y**2/b**2) for y in ys)
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ts = [self.phase2t(phase(self.u1transform(self.icenteriso(
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complex(x, y))))) for x, y in zip(xs, ys)]
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else: # This case is very similar, see notes and assume instead y0!=y
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b2ma2 = (b**2 - a**2)
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coeffs = [b2ma2**2,
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2*b2ma2*a**2*x0,
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(-b**4 + (2*b**2 - a**2 + x0**2)*a**2 + y0**2)*a**2,
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-2*b2ma2*a**4*x0,
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-a**6*x0**2]
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xs = polyroots(coeffs, realroots=True,
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condition=lambda r: -a <= r <= a)
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ys = (b*sqrt(1 - x**2/a**2) for x in xs)
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ts = [self.phase2t(phase(self.u1transform(self.icenteriso(
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complex(x, y))))) for x, y in zip(xs, ys)]
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# u1orig = self.u1transform(origin)
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# if abs(u1orig) == 1: # origin lies on ellipse
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# t = self.phase2t(phase(u1orig))
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# d_min = 0
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#
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# # Transform to a coordinate system where the ellipse is centered
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# # at the origin and its axes are horizontal/vertical
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# zeta0 = self.centeriso(origin)
|
||||
# a, b = self.radius.real, self.radius.imag
|
||||
# x0, y0 = zeta0.real, zeta0.imag
|
||||
#
|
||||
# # Find t s.t. z'(t)
|
||||
# a2mb2 = (a**2 - b**2)
|
||||
# if u1orig.imag: # x != x0
|
||||
#
|
||||
# coeffs = [a2mb2**2,
|
||||
# 2*a2mb2*b**2*y0,
|
||||
# (-a**4 + (2*a**2 - b**2 + y0**2)*b**2 + x0**2)*b**2,
|
||||
# -2*a2mb2*b**4*y0,
|
||||
# -b**6*y0**2]
|
||||
# ys = polyroots(coeffs, realroots=True,
|
||||
# condition=lambda r: -b <= r <= b)
|
||||
# xs = (a*sqrt(1 - y**2/b**2) for y in ys)
|
||||
#
|
||||
# ts = [self.phase2t(phase(self.u1transform(self.icenteriso(
|
||||
# complex(x, y))))) for x, y in zip(xs, ys)]
|
||||
#
|
||||
# else: # This case is very similar, see notes and assume instead y0!=y
|
||||
# b2ma2 = (b**2 - a**2)
|
||||
# coeffs = [b2ma2**2,
|
||||
# 2*b2ma2*a**2*x0,
|
||||
# (-b**4 + (2*b**2 - a**2 + x0**2)*a**2 + y0**2)*a**2,
|
||||
# -2*b2ma2*a**4*x0,
|
||||
# -a**6*x0**2]
|
||||
# xs = polyroots(coeffs, realroots=True,
|
||||
# condition=lambda r: -a <= r <= a)
|
||||
# ys = (b*sqrt(1 - x**2/a**2) for x in xs)
|
||||
#
|
||||
# ts = [self.phase2t(phase(self.u1transform(self.icenteriso(
|
||||
# complex(x, y))))) for x, y in zip(xs, ys)]
|
||||
|
||||
raise _NotImplemented4ArcException
|
||||
|
||||
|
|
@ -2156,7 +2157,8 @@ class Path(MutableSequence):
|
|||
(seg_idx - 1) % len(self._segments)]
|
||||
if not seg.joins_smoothly_with(previous_seg_in_path):
|
||||
return float('inf')
|
||||
elif np.isclose(t, 1) and (seg_idx != len(self) - 1 or self.end==self.start):
|
||||
elif np.isclose(t, 1) and (seg_idx != len(self) - 1 or
|
||||
self.end == self.start):
|
||||
next_seg_in_path = self._segments[
|
||||
(seg_idx + 1) % len(self._segments)]
|
||||
if not next_seg_in_path.joins_smoothly_with(seg):
|
||||
|
|
@ -2223,7 +2225,8 @@ class Path(MutableSequence):
|
|||
# redundant intersection. This code block checks for and removes said
|
||||
# redundancies.
|
||||
if intersection_list:
|
||||
pts = [seg1.point(_t1) for _T1, _seg1, _t1 in list(zip(*intersection_list))[0]]
|
||||
pts = [seg1.point(_t1)
|
||||
for _T1, _seg1, _t1 in list(zip(*intersection_list))[0]]
|
||||
indices2remove = []
|
||||
for ind1 in range(len(pts)):
|
||||
for ind2 in range(ind1 + 1, len(pts)):
|
||||
|
|
|
|||
|
|
@ -6,13 +6,15 @@ import numpy as np
|
|||
|
||||
|
||||
def get_desired_path(name, paths):
|
||||
return next(p for p in paths if p.element.get('{some://testuri}name') == name)
|
||||
return next(p for p in paths
|
||||
if p.element.get('{some://testuri}name') == name)
|
||||
|
||||
|
||||
class TestGroups(unittest.TestCase):
|
||||
|
||||
def check_values(self, v, z):
|
||||
# Check that the components of 2D vector v match the components of complex number z
|
||||
# Check that the components of 2D vector v match the components
|
||||
# of complex number z
|
||||
self.assertAlmostEqual(v[0], z.real)
|
||||
self.assertAlmostEqual(v[1], z.imag)
|
||||
|
||||
|
|
@ -20,8 +22,10 @@ class TestGroups(unittest.TestCase):
|
|||
# Check that the endpoints of the line have been correctly transformed.
|
||||
# * tf is the transform that should have been applied.
|
||||
# * v_s_vals is a 2D list of the values of the line's start point
|
||||
# * v_e_relative_vals is a 2D list of the values of the line's end point relative to the start point
|
||||
# * name is the path name (value of the test:name attribute in the SVG document)
|
||||
# * v_e_relative_vals is a 2D list of the values of the line's
|
||||
# end point relative to the start point
|
||||
# * name is the path name (value of the test:name attribute in
|
||||
# the SVG document)
|
||||
# * paths is the output of doc.flatten_all_paths()
|
||||
v_s_vals.append(1.0)
|
||||
v_e_relative_vals.append(0.0)
|
||||
|
|
@ -34,22 +38,30 @@ class TestGroups(unittest.TestCase):
|
|||
self.check_values(tf.dot(v_e), actual.path.end)
|
||||
|
||||
def test_group_flatten(self):
|
||||
# Test the Document.flatten_all_paths() function against the groups.svg test file.
|
||||
# There are 12 paths in that file, with various levels of being nested inside of group transforms.
|
||||
# The check_line function is used to reduce the boilerplate, since all the tests are very similar.
|
||||
# This test covers each of the different types of transforms that are specified by the SVG standard.
|
||||
# Test the Document.flatten_all_paths() function against the
|
||||
# groups.svg test file.
|
||||
# There are 12 paths in that file, with various levels of being
|
||||
# nested inside of group transforms.
|
||||
# The check_line function is used to reduce the boilerplate,
|
||||
# since all the tests are very similar.
|
||||
# This test covers each of the different types of transforms
|
||||
# that are specified by the SVG standard.
|
||||
doc = Document(join(dirname(__file__), 'groups.svg'))
|
||||
|
||||
result = doc.flatten_all_paths()
|
||||
self.assertEqual(12, len(result))
|
||||
|
||||
tf_matrix_group = np.array([[1.5, 0.0, -40.0], [0.0, 0.5, 20.0], [0.0, 0.0, 1.0]])
|
||||
tf_matrix_group = np.array([[1.5, 0.0, -40.0],
|
||||
[0.0, 0.5, 20.0],
|
||||
[0.0, 0.0, 1.0]])
|
||||
|
||||
self.check_line(tf_matrix_group,
|
||||
[183, 183], [0.0, -50],
|
||||
'path00', result)
|
||||
|
||||
tf_scale_group = np.array([[1.25, 0.0, 0.0], [0.0, 1.25, 0.0], [0.0, 0.0, 1.0]])
|
||||
tf_scale_group = np.array([[1.25, 0.0, 0.0],
|
||||
[0.0, 1.25, 0.0],
|
||||
[0.0, 0.0, 1.0]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_group),
|
||||
[122, 320], [-50.0, 0.0],
|
||||
|
|
@ -63,19 +75,27 @@ class TestGroups(unittest.TestCase):
|
|||
[150, 200], [-50, 25],
|
||||
'path03', result)
|
||||
|
||||
tf_nested_translate_group = np.array([[1, 0, 20], [0, 1, 0], [0, 0, 1]])
|
||||
tf_nested_translate_group = np.array([[1, 0, 20],
|
||||
[0, 1, 0],
|
||||
[0, 0, 1]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_group).dot(tf_nested_translate_group),
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_group
|
||||
).dot(tf_nested_translate_group),
|
||||
[150, 200], [-50, 25],
|
||||
'path04', result)
|
||||
|
||||
tf_nested_translate_xy_group = np.array([[1, 0, 20], [0, 1, 30], [0, 0, 1]])
|
||||
tf_nested_translate_xy_group = np.array([[1, 0, 20],
|
||||
[0, 1, 30],
|
||||
[0, 0, 1]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_group).dot(tf_nested_translate_xy_group),
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_group
|
||||
).dot(tf_nested_translate_xy_group),
|
||||
[150, 200], [-50, 25],
|
||||
'path05', result)
|
||||
|
||||
tf_scale_xy_group = np.array([[0.5, 0, 0], [0, 1.5, 0.0], [0, 0, 1]])
|
||||
tf_scale_xy_group = np.array([[0.5, 0, 0],
|
||||
[0, 1.5, 0.0],
|
||||
[0, 0, 1]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_scale_xy_group),
|
||||
[122, 320], [-50, 0],
|
||||
|
|
@ -94,33 +114,44 @@ class TestGroups(unittest.TestCase):
|
|||
tf_rotate_xy_group_R = np.array([[np.cos(a_08), -np.sin(a_08), 0],
|
||||
[np.sin(a_08), np.cos(a_08), 0],
|
||||
[0, 0, 1]])
|
||||
tf_rotate_xy_group_T = np.array([[1, 0, 183], [0, 1, 183], [0, 0, 1]])
|
||||
tf_rotate_xy_group = tf_rotate_xy_group_T.dot(tf_rotate_xy_group_R).dot(np.linalg.inv(tf_rotate_xy_group_T))
|
||||
tf_rotate_xy_group_T = np.array([[1, 0, 183],
|
||||
[0, 1, 183],
|
||||
[0, 0, 1]])
|
||||
tf_rotate_xy_group = tf_rotate_xy_group_T.dot(
|
||||
tf_rotate_xy_group_R).dot(
|
||||
np.linalg.inv(tf_rotate_xy_group_T))
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_rotate_xy_group),
|
||||
[183, 183], [0, 30],
|
||||
'path08', result)
|
||||
|
||||
a_09 = 5.0*np.pi/180.0
|
||||
tf_skew_x_group = np.array([[1, np.tan(a_09), 0], [0, 1, 0], [0, 0, 1]])
|
||||
tf_skew_x_group = np.array([[1, np.tan(a_09), 0],
|
||||
[0, 1, 0],
|
||||
[0, 0, 1]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_skew_x_group),
|
||||
[183, 183], [40, 40],
|
||||
'path09', result)
|
||||
|
||||
a_10 = 5.0*np.pi/180.0
|
||||
tf_skew_y_group = np.array([[1, 0, 0], [np.tan(a_10), 1, 0], [0, 0, 1]])
|
||||
tf_skew_y_group = np.array([[1, 0, 0],
|
||||
[np.tan(a_10), 1, 0],
|
||||
[0, 0, 1]])
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_skew_y_group),
|
||||
[183, 183], [40, 40],
|
||||
'path10', result)
|
||||
|
||||
# This last test is for handling transforms that are defined as attributes of a <path> element.
|
||||
# This last test is for handling transforms that are defined as
|
||||
# attributes of a <path> element.
|
||||
a_11 = -40*np.pi/180.0
|
||||
tf_path11_R = np.array([[np.cos(a_11), -np.sin(a_11), 0],
|
||||
[np.sin(a_11), np.cos(a_11), 0],
|
||||
[0, 0, 1]])
|
||||
tf_path11_T = np.array([[1, 0, 100], [0, 1, 100], [0, 0, 1]])
|
||||
tf_path11_T = np.array([[1, 0, 100],
|
||||
[0, 1, 100],
|
||||
[0, 0, 1]])
|
||||
tf_path11 = tf_path11_T.dot(tf_path11_R).dot(np.linalg.inv(tf_path11_T))
|
||||
|
||||
self.check_line(tf_matrix_group.dot(tf_skew_y_group).dot(tf_path11),
|
||||
|
|
@ -129,13 +160,13 @@ class TestGroups(unittest.TestCase):
|
|||
|
||||
def check_group_count(self, doc, expected_count):
|
||||
count = 0
|
||||
for group in doc.tree.getroot().iter('{{{0}}}g'.format(SVG_NAMESPACE['svg'])):
|
||||
for _ in doc.tree.getroot().iter('{{{0}}}g'.format(SVG_NAMESPACE['svg'])):
|
||||
count += 1
|
||||
|
||||
self.assertEqual(expected_count, count)
|
||||
|
||||
def test_add_group(self):
|
||||
# Test the Document.add_group() function and related Document functions.
|
||||
# Test `Document.add_group()` function and related Document functions.
|
||||
doc = Document(None)
|
||||
self.check_group_count(doc, 0)
|
||||
|
||||
|
|
@ -161,21 +192,30 @@ class TestGroups(unittest.TestCase):
|
|||
|
||||
# Test that we can retrieve each new group from the document
|
||||
self.assertEqual(base_group, doc.get_or_add_group(['base_group']))
|
||||
self.assertEqual(child_group, doc.get_or_add_group(['base_group', 'child_group']))
|
||||
self.assertEqual(grandchild_group, doc.get_or_add_group(['base_group', 'child_group', 'grandchild_group']))
|
||||
self.assertEqual(sibling_group, doc.get_or_add_group(['base_group', 'sibling_group']))
|
||||
self.assertEqual(child_group, doc.get_or_add_group(
|
||||
['base_group', 'child_group']))
|
||||
self.assertEqual(grandchild_group, doc.get_or_add_group(
|
||||
['base_group', 'child_group', 'grandchild_group']))
|
||||
self.assertEqual(sibling_group, doc.get_or_add_group(
|
||||
['base_group', 'sibling_group']))
|
||||
|
||||
# Create a new nested group
|
||||
new_child = doc.get_or_add_group(['base_group', 'new_parent', 'new_child'])
|
||||
new_child = doc.get_or_add_group(
|
||||
['base_group', 'new_parent', 'new_child'])
|
||||
self.check_group_count(doc, 6)
|
||||
self.assertEqual(new_child, doc.get_or_add_group(['base_group', 'new_parent', 'new_child']))
|
||||
self.assertEqual(new_child, doc.get_or_add_group(
|
||||
['base_group', 'new_parent', 'new_child']))
|
||||
|
||||
new_leaf = doc.get_or_add_group(['base_group', 'new_parent', 'new_child', 'new_leaf'])
|
||||
self.assertEqual(new_leaf, doc.get_or_add_group(['base_group', 'new_parent', 'new_child', 'new_leaf']))
|
||||
new_leaf = doc.get_or_add_group(
|
||||
['base_group', 'new_parent', 'new_child', 'new_leaf'])
|
||||
self.assertEqual(new_leaf, doc.get_or_add_group([
|
||||
'base_group', 'new_parent', 'new_child', 'new_leaf']))
|
||||
self.check_group_count(doc, 7)
|
||||
|
||||
path_d = 'M 206.07112,858.41289 L 206.07112,-2.02031 C -50.738,-81.14814 -20.36402,-105.87055 ' \
|
||||
'52.52793,-101.01525 L 103.03556,0.0 L 0.0,111.11678'
|
||||
path_d = ('M 206.07112,858.41289 L 206.07112,-2.02031 '
|
||||
'C -50.738,-81.14814 -20.36402,-105.87055 52.52793,-101.01525 '
|
||||
'L 103.03556,0.0 '
|
||||
'L 0.0,111.11678')
|
||||
|
||||
svg_path = doc.add_path(path_d, group=new_leaf)
|
||||
self.assertEqual(path_d, svg_path.get('d'))
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
# 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 *
|
||||
|
|
@ -12,7 +11,8 @@ def construct_rotation_tf(a, x, y):
|
|||
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_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]])
|
||||
|
||||
|
|
@ -31,8 +31,7 @@ class TestParser(unittest.TestCase):
|
|||
|
||||
# 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),
|
||||
self.assertEqual(path1, Path(Line(0 + 0j, 50 + 20j),
|
||||
Line(100 + 100j, 300 + 100j),
|
||||
Line(300 + 100j, 200 + 300j),
|
||||
Line(200 + 300j, 100 + 100j)))
|
||||
|
|
@ -47,44 +46,66 @@ class TestParser(unittest.TestCase):
|
|||
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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)))
|
||||
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),
|
||||
self.assertEqual(path1, Path(Line(300 + 200j, 150 + 200j),
|
||||
Arc(150 + 200j, 150 + 150j, 0, 1, 0, 300 + 50j),
|
||||
Line(300 + 50j, 300 + 200j)))
|
||||
|
||||
|
|
@ -115,8 +136,7 @@ class TestParser(unittest.TestCase):
|
|||
|
||||
# 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),
|
||||
self.assertEqual(path1, Path(Line(0 + 0j, 50 + 20j),
|
||||
Line(100 + 100j, 300 + 100j),
|
||||
Line(300 + 100j, 200 + 300j),
|
||||
Line(200 + 300j, 100 + 100j)))
|
||||
|
|
@ -124,17 +144,24 @@ class TestParser(unittest.TestCase):
|
|||
# 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)))
|
||||
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)))
|
||||
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)))
|
||||
Path(QuadraticBezier(100 + 200j,
|
||||
100 + 200j,
|
||||
250 + 200j)))
|
||||
|
||||
def test_negative(self):
|
||||
"""You don't need spaces before a minus-sign"""
|
||||
|
|
@ -144,20 +171,24 @@ class TestParser(unittest.TestCase):
|
|||
|
||||
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.
|
||||
# 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')
|
||||
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)')
|
||||
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]])
|
||||
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
|
||||
|
|
@ -170,7 +201,8 @@ class TestParser(unittest.TestCase):
|
|||
|
||||
# Now specify y
|
||||
expected_tf_translate[1, 2] = 45.5
|
||||
tf_translate = svgpathtools.parser.parse_transform('translate(-36 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
|
||||
|
|
|
|||
Loading…
Reference in New Issue