1 #!/usr/bin/env python
2 '''
3 Copyright (C) 2005 Aaron Spike, aaron@ekips.org
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 '''
19 import random, math, inkex, cubicsuperpath
21 def randomize((x, y), r, norm):
22 if norm:
23 r = abs(random.normalvariate(0.0,0.5*r))
24 else:
25 r = random.uniform(0.0,r)
26 a = random.uniform(0.0,2*math.pi)
27 x += math.cos(a)*r
28 y += math.sin(a)*r
29 return [x, y]
31 class RadiusRandomize(inkex.Effect):
32 def __init__(self):
33 inkex.Effect.__init__(self)
34 self.OptionParser.add_option("--title")
35 self.OptionParser.add_option("-r", "--radius",
36 action="store", type="float",
37 dest="radius", default=10.0,
38 help="Randomly move control and end points in this radius")
39 self.OptionParser.add_option("-c", "--ctrl",
40 action="store", type="inkbool",
41 dest="ctrl", default=True,
42 help="Randomize control points")
43 self.OptionParser.add_option("-e", "--end",
44 action="store", type="inkbool",
45 dest="end", default=True,
46 help="Randomize nodes")
47 self.OptionParser.add_option("-n", "--norm",
48 action="store", type="inkbool",
49 dest="norm", default=True,
50 help="Use normal distribution")
51 def effect(self):
52 for id, node in self.selected.iteritems():
53 if node.tag == inkex.addNS('path','svg'):
54 d = node.get('d')
55 p = cubicsuperpath.parsePath(d)
56 for subpath in p:
57 for csp in subpath:
58 if self.options.end:
59 delta=randomize([0,0], self.options.radius, self.options.norm)
60 csp[0][0]+=delta[0]
61 csp[0][1]+=delta[1]
62 csp[1][0]+=delta[0]
63 csp[1][1]+=delta[1]
64 csp[2][0]+=delta[0]
65 csp[2][1]+=delta[1]
66 if self.options.ctrl:
67 csp[0]=randomize(csp[0], self.options.radius, self.options.norm)
68 csp[2]=randomize(csp[2], self.options.radius, self.options.norm)
69 node.set('d',cubicsuperpath.formatPath(p))
71 e = RadiusRandomize()
72 e.affect()