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mightyscape-1.1-deprecated/extensions/fablabchemnitz/dots2pathpoints/dots2pathpoints.py

76 lines
2.7 KiB
Python

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