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Diffstat (limited to '')
-rwxr-xr-x | share/extensions/straightseg.py | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/share/extensions/straightseg.py b/share/extensions/straightseg.py new file mode 100755 index 0000000..172cebb --- /dev/null +++ b/share/extensions/straightseg.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python +# coding=utf-8 +# +# Copyright (C) 2005 Aaron Spike, aaron@ekips.org +# +# 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 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +"""Straintens path segments (but doesn't turn them into lines)""" +import inkex + +from inkex.bezier import percent_point + +class SegmentStraightener(inkex.EffectExtension): + """Make segments straiter""" + def add_arguments(self, pars): + pars.add_argument("-p", "--percent", type=float, default=10.0,\ + help="move curve handles PERCENT percent closer to a straight line") + pars.add_argument("-b", "--behavior", type=int, default=1,\ + help="straightening behavior for cubic segments") + + def effect(self): + for node in self.svg.selection.get(inkex.PathElement).values(): + path = node.path.to_arrays() + last = [] + sub_start = [] + for cmd, params in path: + if cmd == 'C': + if self.options.behavior <= 1: + #shorten handles towards end points + params[:2] = percent_point(params[:2], last[:], self.options.percent) + params[2:4] = percent_point(params[2:4], params[-2:], self.options.percent) + else: + #shorten handles towards thirds of the segment + dest1 = percent_point(last[:], params[-2:], 33.3) + dest2 = percent_point(params[-2:], last[:], 33.3) + params[:2] = percent_point(params[:2], dest1[:], self.options.percent) + params[2:4] = percent_point(params[2:4], dest2[:], self.options.percent) + elif cmd == 'Q': + dest = percent_point(last[:], params[-2:], 50) + params[:2] = percent_point(params[:2], dest, self.options.percent) + if cmd == 'M': + sub_start = params[-2:] + if cmd == 'Z': + last = sub_start[:] + else: + last = params[-2:] + node.path = path + +if __name__ == '__main__': + SegmentStraightener().run() |