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Text File  |  2006-09-06  |  3KB  |  87 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 math, tempfile, copy, cPickle, inkex, simplepath
  20.  
  21. def findend(d):
  22.     end = []
  23.     subPathStart = []
  24.     for cmd,params in d:
  25.         if cmd == 'M':
  26.             subPathStart = params[-2:]
  27.         if cmd == 'Z':
  28.             end = subPathStart[:]
  29.         else:
  30.             end = params[-2:]
  31.     return end
  32.  
  33. class Kochify(inkex.Effect):
  34.     def effect(self):
  35.         try:
  36.             f = open(tempfile.gettempdir() + '/kochify.bin', 'r')
  37.             proto = cPickle.load(f)
  38.             f.close()                
  39.         except:
  40.             return False
  41.         for id, node in self.selected.iteritems():
  42.             if node.tagName == 'path':
  43.                 d = node.attributes.getNamedItem('d')
  44.                 p = simplepath.parsePath(d.value)
  45.                 last = p[0][1][-2:]
  46.                 subPathStart = []
  47.                 cur = []
  48.                 new = []
  49.                 for i in range(len(p)):
  50.                     rep = copy.deepcopy(proto['path'])
  51.                     cmd, params = p[i]
  52.                     if cmd == 'M':
  53.                         subPathStart = params[-2:]
  54.                         new.append(copy.deepcopy(p[i]))
  55.                         continue
  56.                     if cmd == 'Z':
  57.                         cur = subPathStart[:]
  58.                     else:
  59.                         cur = params[-2:]
  60.  
  61.                     if last == cur:
  62.                         continue
  63.  
  64.                     dx = cur[0]-last[0]
  65.                     dy = cur[1]-last[1]
  66.                     length = math.sqrt((dx**2) + (dy**2))
  67.                     angle = math.atan2(dy,dx)
  68.         
  69.                     scale = length / proto['length']
  70.                     rotate = angle - proto['angle']
  71.                     simplepath.scalePath(rep,scale,scale)
  72.                     simplepath.rotatePath(rep, rotate)
  73.                     repend = findend(rep)
  74.                     transx = cur[0] - repend[0]
  75.                     transy = cur[1] - repend[1]
  76.                     simplepath.translatePath(rep, transx, transy)
  77.                     
  78.                     if proto['endsinz']:
  79.                         new.extend(rep[:])
  80.                     else:
  81.                         new.extend(rep[1:])
  82.                     last = cur[:]
  83.                 
  84.                 d.value = simplepath.formatPath(new)
  85. e = Kochify()
  86. e.affect()
  87.