Code

* Extraneous char in shebang removed (Closes: #168796)
[inkscape.git] / share / extensions / summersnight.py
1 #!/usr/bin/env python
2 """
3 Copyright (C) 2005 Aaron Spike, aaron@ekips.org
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.
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.
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
19 """
20 import inkex, os, simplepath, cubicsuperpath
21 from ffgeom import *
23 class Project(inkex.Effect):
24     def __init__(self):
25             inkex.Effect.__init__(self)
26     def effect(self):
27         if len(self.options.ids) < 2:
28             inkex.debug("Requires two selected paths. The second must be exactly four nodes long.")
29             exit()            
30             
31         #obj is selected second
32         obj = self.selected[self.options.ids[0]]
33         trafo = self.selected[self.options.ids[1]]
34         if obj.tag == inkex.addNS('path','svg') and trafo.tag == inkex.addNS('path','svg'):
35             #distil trafo into four node points
36             trafo = cubicsuperpath.parsePath(trafo.get('d'))
37             trafo = [[Point(csp[1][0],csp[1][1]) for csp in subs] for subs in trafo][0][:4]
39             #vectors pointing away from the trafo origin
40             self.t1 = Segment(trafo[0],trafo[1])
41             self.t2 = Segment(trafo[1],trafo[2])
42             self.t3 = Segment(trafo[3],trafo[2])
43             self.t4 = Segment(trafo[0],trafo[3])
44     
45             #query inkscape about the bounding box of obj
46             self.q = {'x':0,'y':0,'width':0,'height':0}
47             file = self.args[-1]
48             id = self.options.ids[0]
49             for query in self.q.keys():
50                 _,f,err = os.popen3("inkscape --query-%s --query-id=%s %s" % (query,id,file))
51                 self.q[query] = float(f.read())
52                 f.close()
53                 err.close()
55             #process path
56             d = obj.get('d')
57             p = cubicsuperpath.parsePath(d)
58             for subs in p:
59                 for csp in subs:
60                     csp[0] = self.trafopoint(csp[0])
61                     csp[1] = self.trafopoint(csp[1])
62                     csp[2] = self.trafopoint(csp[2])
63             obj.set('d',cubicsuperpath.formatPath(p))
65     def trafopoint(self,(x,y)):
66         #Transform algorithm thanks to Jose Hevia (freon)
67         vector = Segment(Point(self.q['x'],self.q['y']),Point(x,y))
68         xratio = abs(vector.delta_x())/self.q['width']
69         yratio = abs(vector.delta_y())/self.q['height']
70     
71         horz = Segment(self.t1.pointAtRatio(xratio),self.t3.pointAtRatio(xratio))
72         vert = Segment(self.t4.pointAtRatio(yratio),self.t2.pointAtRatio(yratio))
74         p = intersectSegments(vert,horz)
75         return [p['x'],p['y']]    
77 e = Project()
78 e.affect()