kopia lustrzana https://github.com/inkstitch/inkstitch
51 wiersze
1.6 KiB
Python
51 wiersze
1.6 KiB
Python
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# Authors: see git history
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#
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# Copyright (c) 2010 Authors
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# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
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import inkex
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from shapely import concave_hull
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from shapely.geometry import LineString, MultiPolygon
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from ..i18n import _
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from ..svg.tags import SVG_PATH_TAG
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from .base import InkstitchExtension
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class Outline(InkstitchExtension):
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def __init__(self, *args, **kwargs):
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InkstitchExtension.__init__(self, *args, **kwargs)
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self.arg_parser.add_argument("-r", "--ratio", type=float, default=0.0, dest="ratio")
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self.arg_parser.add_argument("-a", "--allow-holes", type=inkex.Boolean, default=False, dest="allow_holes")
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def effect(self):
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if not self.svg.selection:
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inkex.errormsg(_("Please select one or more shapes to convert to their outline."))
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return
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for element in self.svg.selection:
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self.element_to_outline(element)
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def element_to_outline(self, element):
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if element.tag_name == 'g':
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for element in element.iterdescendants(SVG_PATH_TAG):
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self.element_to_outline(element)
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return
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path = element.get_path()
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path = path.end_points
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hull = concave_hull(LineString(path), ratio=self.options.ratio, allow_holes=self.options.allow_holes)
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if isinstance(hull, LineString):
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return
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if not isinstance(hull, MultiPolygon):
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hull = MultiPolygon([hull])
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d = ''
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for geom in hull.geoms:
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d += 'M '
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for x, y in geom.exterior.coords:
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d += f'{x}, {y} '
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d += "Z"
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element.set('d', d)
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