home *** CD-ROM | disk | FTP | other *** search
/ Chip 2006 June (Extra) / CHIP 2006-06.3.iso / program / opensource / Inkscape-0.43-2.win32.exe / share / extensions / radiusrand.py < prev    next >
Encoding:
Python Source  |  2005-07-24  |  2.2 KB  |  66 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):
  22.     r = random.uniform(0.0,r)
  23.     a = random.uniform(0.0,2*math.pi)
  24.     x += math.cos(a)*r
  25.     y += math.sin(a)*r
  26.     return [x, y]
  27.  
  28. class RadiusRandomize(inkex.Effect):
  29.     def __init__(self):
  30.         inkex.Effect.__init__(self)
  31.         self.OptionParser.add_option("-r", "--radius",
  32.                         action="store", type="float", 
  33.                         dest="radius", default=10.0,
  34.                         help="Randomly move control and end points in this radius")
  35.         self.OptionParser.add_option("-c", "--ctrl",
  36.                         action="store", type="inkbool", 
  37.                         dest="ctrl", default=True,
  38.                         help="Randomize control points")
  39.         self.OptionParser.add_option("-e", "--end",
  40.                         action="store", type="inkbool", 
  41.                         dest="end", default=True,
  42.                         help="Randomize nodes")
  43.     def effect(self):
  44.         for id, node in self.selected.iteritems():
  45.             if node.tagName == 'path':
  46.                 d = node.attributes.getNamedItem('d')
  47.                 p = cubicsuperpath.parsePath(d.value)
  48.                 for subpath in p:
  49.                     for csp in subpath:
  50.                         if self.options.end:
  51.                             delta=randomize([0,0], self.options.radius)
  52.                             csp[0][0]+=delta[0] 
  53.                             csp[0][1]+=delta[1] 
  54.                             csp[1][0]+=delta[0] 
  55.                             csp[1][1]+=delta[1] 
  56.                             csp[2][0]+=delta[0] 
  57.                             csp[2][1]+=delta[1] 
  58.                         if self.options.ctrl:
  59.                             csp[0]=randomize(csp[0], self.options.radius)
  60.                             csp[2]=randomize(csp[2], self.options.radius)
  61.                 d.value = cubicsuperpath.formatPath(p)
  62.  
  63. e = RadiusRandomize()
  64. e.affect()
  65.  
  66.