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-rwxr-xr-xshare/extensions/addnodes.py65
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diff --git a/share/extensions/addnodes.py b/share/extensions/addnodes.py
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+++ b/share/extensions/addnodes.py
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+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2005, 2007 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.
+"""
+This extension either adds nodes to a path so that
+
+ No segment is longer than a maximum value OR that each segment is divided
+ into a given number of equal segments.
+
+"""
+import math
+import inkex
+
+from inkex import bezier, PathElement, CubicSuperPath
+
+
+class AddNodes(inkex.EffectExtension):
+ """Extension to split a path by adding nodes to it"""
+ def add_arguments(self, pars):
+ pars.add_argument("--segments", type=int, default=2,
+ help="Number of segments to divide the path into")
+ pars.add_argument("--max", type=float, default=2.0,
+ help="Number of segments to divide the path into")
+ pars.add_argument("--method", help="The kind of division to perform")
+
+ def effect(self):
+ for node in self.svg.selection.filter(PathElement).values():
+ new = []
+ for sub in node.path.to_superpath():
+ new.append([sub[0][:]])
+ i = 1
+ while i <= len(sub) - 1:
+ length = bezier.cspseglength(new[-1][-1], sub[i])
+
+ if self.options.method == 'bynum':
+ splits = self.options.segments
+ else:
+ splits = math.ceil(length / self.options.max)
+
+ for sel in range(int(splits), 1, -1):
+ result = bezier.cspbezsplitatlength(new[-1][-1], sub[i], 1.0 / sel)
+ better_result = [[list(el) for el in elements] for elements in result]
+ new[-1][-1], nxt, sub[i] = better_result
+ new[-1].append(nxt[:])
+ new[-1].append(sub[i])
+ i += 1
+ node.path = CubicSuperPath(new).to_path(curves_only=True)
+
+if __name__ == '__main__':
+ AddNodes().run()