76 lines
2.7 KiB
Python
76 lines
2.7 KiB
Python
#! /usr/bin/env python3
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'''
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Copyright (C) 2020 Christian Hoffmann christian@lehrer-hoffmann.de
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##This extension allows you to draw a Cartesian grid in Inkscape.
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##There is a wide range of options including subdivision, subsubdivions
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## and logarithmic scales. Custom line widths are also possible.
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##All elements are grouped with similar elements (eg all x-subdivs)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Fraanklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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'''
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import inkex
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class Pathpoints2Dots(inkex.EffectExtension):
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--endpoints", type=inkex.Boolean, default=True)
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pars.add_argument("--controlpoints", type=inkex.Boolean, default=False)
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def effect(self):
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if len(self.svg.selected) != 2:
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inkex.errormsg("Please select exact two objects:\n1. object representing path,\n2. object representing dots.")
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return
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nodes = list(self.svg.selected.items())
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iddot = nodes[0][0]
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idpath = nodes[1][0]
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dot = self.svg.selected[iddot]
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path = self.svg.selected[idpath]
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self.svg.selected.popitem()
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self.svg.selected.popitem()
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bb = dot.bounding_box()
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parent = path.find('..')
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group = inkex.Group()
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parent.add(group)
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end_points = list(path.path.end_points)
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control_points = []
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for cp in path.path.control_points:
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is_endpoint = False
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for ep in end_points:
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if cp.x == ep.x and cp.y == ep.y:
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is_endpoint = True
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break
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if not is_endpoint:
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control_points.append(cp)
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pointlist = []
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if self.options.endpoints:
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pointlist += end_points
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if self.options.controlpoints:
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pointlist += control_points
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for point in pointlist:
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clone = inkex.Use()
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clone.set('xlink:href','#'+iddot)
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clone.set('x',point.x-bb.center.x)
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clone.set('y',point.y-bb.center.y)
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group.add(clone)
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if __name__ == '__main__':
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Pathpoints2Dots().run()
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