35dbc0840bab7027118509fb3053efcd2c42045c
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 math, inkex, cubicsuperpath
21 class Whirl(inkex.Effect):
22 def __init__(self):
23 inkex.Effect.__init__(self)
24 self.OptionParser.add_option("-x", "--centerx",
25 action="store", type="float",
26 dest="centerx", default=10.0,
27 help="")
28 self.OptionParser.add_option("-y", "--centery",
29 action="store", type="float",
30 dest="centery", default=0.0,
31 help="")
32 self.OptionParser.add_option("-t", "--whirl",
33 action="store", type="float",
34 dest="whirl", default=1.0,
35 help="amount of whirl")
36 self.OptionParser.add_option("-r", "--rotation",
37 action="store", type="inkbool",
38 dest="rotation", default=True,
39 help="direction of rotation")
40 def effect(self):
41 for id, node in self.selected.iteritems():
42 rotation = 1
43 if self.options.rotation == True:
44 rotation = -1
45 whirl = self.options.whirl / 1000
46 if node.tagName == 'path':
47 d = node.attributes.getNamedItem('d')
48 p = cubicsuperpath.parsePath(d.value)
49 for sub in p:
50 for csp in sub:
51 for point in csp:
52 point[0] -= self.options.centerx
53 point[1] -= self.options.centery
54 dist = math.sqrt((point[0] ** 2) + (point[1] ** 2))
55 if dist != 0:
56 a = rotation * dist * whirl
57 theta = math.atan2(point[1], point[0]) + a
58 point[0] = (dist * math.cos(theta))
59 point[1] = (dist * math.sin(theta))
60 point[0] += self.options.centerx
61 point[1] += self.options.centery
62 d.value = cubicsuperpath.formatPath(p)
64 e = Whirl()
65 e.affect()