91 lines
3.3 KiB
Python
91 lines
3.3 KiB
Python
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#!/usr/bin/env python
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'''
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zigzag.py
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Sunabe kazumichi 2009/9/29
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http://dp48069596.lolipop.jp/
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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this program shifts the nodes zigzags.
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'''
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import random, math, inkex, cubicsuperpath
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def pointdistance((x1,y1),(x2,y2)):
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dist=math.sqrt(((x2 - x1) ** 2) + ((y2 - y1) ** 2))
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if dist==0:
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dx=0
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dy=0
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else:
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dx=(x2 - x1)/dist
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dy=(y2 - y1)/dist
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return dx,dy
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def randomize((x,y), r):
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if y==0:
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a=math.pi
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elif x==0 and y<>0:
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a=math.pi/2
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else:
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a = math.atan2(y,x)
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x = math.cos(a-math.pi/2)*r
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y = math.sin(a-math.pi/2)*r
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return [x, y]
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class RadiusRandomize(inkex.Effect):
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def __init__(self):
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inkex.Effect.__init__(self)
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self.OptionParser.add_option("--title")
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self.OptionParser.add_option("-r", "--radius",
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action="store", type="float",
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dest="radius", default=10.0,
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help="Randomly move control and end points in this radius")
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self.OptionParser.add_option("-e", "--end",
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action="store", type="inkbool",
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dest="end", default=True,
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help="Randomize nodes")
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def effect(self):
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for id, node in self.selected.iteritems():
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if node.tag == inkex.addNS('path','svg'):
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d = node.get('d')
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p = cubicsuperpath.parsePath(d)
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for subpath in p:
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for i, csp in enumerate(subpath):
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if self.options.end:
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if i % 2 <> 0:
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dx,dy=pointdistance(csp[0],csp[1])
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delta=randomize( (dx, dy),self.options.radius)
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csp[0][0]+=delta[0]
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csp[0][1]+=delta[1]
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csp[1][0]+=delta[0]
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csp[1][1]+=delta[1]
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csp[2][0]+=delta[0]
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csp[2][1]+=delta[1]
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else:
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dx,dy=pointdistance(csp[0],csp[1])
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delta=randomize( (dx, dy),self.options.radius)
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csp[0][0]-=delta[0]
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csp[0][1]-=delta[1]
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csp[1][0]-=delta[0]
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csp[1][1]-=delta[1]
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csp[2][0]-=delta[0]
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csp[2][1]-=delta[1]
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node.set('d',cubicsuperpath.formatPath(p))
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e = RadiusRandomize()
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e.affect()
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