radiusrand.py revision ed54eb878e628f45eece74afe8585ca75df0dad5
#!/usr/bin/env python
'''
Copyright (C) 2005 Aaron Spike, aaron@ekips.org
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
import random, math, inkex, cubicsuperpath
def randomize((x, y), rx, ry, norm):
if norm:
r = abs(random.normalvariate(0.0,0.5*max(rx, ry)))
else:
r = random.uniform(0.0,max(rx, ry))
a = random.uniform(0.0,2*math.pi)
x += math.cos(a)*rx
y += math.sin(a)*ry
return [x, y]
class RadiusRandomize(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.OptionParser.add_option("--title")
self.OptionParser.add_option("-x", "--radiusx",
action="store", type="float",
dest="radiusx", default=10.0,
help="Randomly move nodes and handles within this radius, X")
self.OptionParser.add_option("-y", "--radiusy",
action="store", type="float",
dest="radiusy", default=10.0,
help="Randomly move nodes and handles within this radius, Y")
self.OptionParser.add_option("-c", "--ctrl",
action="store", type="inkbool",
dest="ctrl", default=True,
help="Randomize control points")
self.OptionParser.add_option("-e", "--end",
action="store", type="inkbool",
dest="end", default=True,
help="Randomize nodes")
self.OptionParser.add_option("-n", "--norm",
action="store", type="inkbool",
dest="norm", default=True,
help="Use normal distribution")
def effect(self):
for id, node in self.selected.iteritems():
if node.tag == inkex.addNS('path','svg'):
d = node.get('d')
p = cubicsuperpath.parsePath(d)
for subpath in p:
for csp in subpath:
if self.options.end:
delta=randomize([0,0], self.options.radiusx, self.options.radiusy, self.options.norm)
csp[0][0]+=delta[0]
csp[0][1]+=delta[1]
csp[1][0]+=delta[0]
csp[1][1]+=delta[1]
csp[2][0]+=delta[0]
csp[2][1]+=delta[1]
if self.options.ctrl:
csp[0]=randomize(csp[0], self.options.radiusx, self.options.radiusy, self.options.norm)
csp[2]=randomize(csp[2], self.options.radiusx, self.options.radiusy, self.options.norm)
node.set('d',cubicsuperpath.formatPath(p))
e = RadiusRandomize()
e.affect()