1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
#!/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 math, inkex, simplepath, sys
def pointAtPercent((x1, y1), (x2, y2), percent):
percent /= 100.0
x = x1 + (percent * (x2 - x1))
y = y1 + (percent * (y2 - y1))
return [x,y]
class SegmentStraightener(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.OptionParser.add_option("-p", "--percent",
action="store", type="float",
dest="percent", default=10.0,
help="move curve handles PERCENT percent closer to a straight line")
self.OptionParser.add_option("-b", "--behavior",
action="store", type="int",
dest="behave", default=1,
help="straightening behavior for cubic segments")
def effect(self):
for id, node in self.selected.iteritems():
if node.tagName == 'path':
d = node.attributes.getNamedItem('d')
p = simplepath.parsePath(d.value)
last = []
subPathStart = []
for cmd,params in p:
if cmd == 'C':
if self.options.behave <= 1:
#shorten handles towards end points
params[:2] = pointAtPercent(params[:2],last[:],self.options.percent)
params[2:4] = pointAtPercent(params[2:4],params[-2:],self.options.percent)
else:
#shorten handles towards thirds of the segment
dest1 = pointAtPercent(last[:],params[-2:],33.3)
dest2 = pointAtPercent(params[-2:],last[:],33.3)
params[:2] = pointAtPercent(params[:2],dest1[:],self.options.percent)
params[2:4] = pointAtPercent(params[2:4],dest2[:],self.options.percent)
elif cmd == 'Q':
dest = pointAtPercent(last[:],params[-2:],50)
params[:2] = pointAtPercent(params[:2],dest,self.options.percent)
if cmd == 'M':
subPathStart = params[-2:]
if cmd == 'Z':
last = subPathStart[:]
else:
last = params[-2:]
d.value = simplepath.formatPath(p)
e = SegmentStraightener()
e.affect()
|
