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("-r", "--radius",
35 action="store", type="float",
36 dest="radius", default=10.0,
37 help="Randomly move control and end points in this radius")
38 self.OptionParser.add_option("-c", "--ctrl",
39 action="store", type="inkbool",
40 dest="ctrl", default=True,
41 help="Randomize control points")
42 self.OptionParser.add_option("-e", "--end",
43 action="store", type="inkbool",
44 dest="end", default=True,
45 help="Randomize nodes")
46 self.OptionParser.add_option("-n", "--norm",
47 action="store", type="inkbool",
48 dest="norm", default=True,
49 help="Use normal distribution")
50 def effect(self):
51 for id, node in self.selected.iteritems():
52 if node.tagName == 'path':
53 d = node.attributes.getNamedItem('d')
54 p = cubicsuperpath.parsePath(d.value)
55 for subpath in p:
56 for csp in subpath:
57 if self.options.end:
58 delta=randomize([0,0], self.options.radius, self.options.norm)
59 csp[0][0]+=delta[0]
60 csp[0][1]+=delta[1]
61 csp[1][0]+=delta[0]
62 csp[1][1]+=delta[1]
63 csp[2][0]+=delta[0]
64 csp[2][1]+=delta[1]
65 if self.options.ctrl:
66 csp[0]=randomize(csp[0], self.options.radius, self.options.norm)
67 csp[2]=randomize(csp[2], self.options.radius, self.options.norm)
68 d.value = cubicsuperpath.formatPath(p)
70 e = RadiusRandomize()
71 e.affect()