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Python Source  |  2006-09-06  |  3.0 KB  |  73 lines
  1. #!/usr/bin/env python 
  2. '''
  3. Copyright (C) 2005 Aaron Spike, aaron@ekips.org
  4.  
  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.
  9.  
  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.
  14.  
  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
  20.  
  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]
  30.  
  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)
  69.  
  70. e = RadiusRandomize()
  71. e.affect()
  72.  
  73.