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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
# Sketch - A Python-based interactive drawing program
# Copyright (C) 1999 by Bernhard Herzog
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# Read a path exported by GIMP's Layers & Channels dialog
#
# A new command "Read Gimp Path" for the Script menu that reads a path
# from a file created with "Export Path" in Gimp's Layers & Channels
# dialog and insert it into the document at a fixed position.
#
# The path is inserted at a fixed position so that if you import several
# paths from the same image these paths have the correct relative
# position.
#
# This you might want to change are the position at which the path is
# inserted, or scaling it, or placing it interactively.
from string import split, lstrip
import re
import Sketch
from Sketch import CreatePath, Point, PolyBezier, Trafo
BEZIER_ANCHOR = 1
BEZIER_CONTROL = 2
BEZIER_MOVE = 3
rx_point = re.compile('\
(?P<type>[123])\s+X:\s*(?P<x>[-+]?[0-9]+)\s+Y:\s*(?P<y>[-+]?[0-9]+)')
def read_path(filename):
path = CreatePath()
paths = [path]
points = []
file = open(filename)
closed = 0
for line in file.readlines():
try:
key, rest = split(line, ':', 1)
except:
continue
if key == 'TYPE':
rest = lstrip(rest)
match = rx_point.match(rest)
if match is not None:
type = int(match.group('type'))
p = Point(float(match.group('x')), float(match.group('y')))
if type == BEZIER_MOVE:
if closed and points:
path.AppendBezier(points[0], points[1], path.Node(0))
path.ClosePath()
points = []
path = CreatePath()
paths.append(path)
path.AppendLine(p)
elif type == BEZIER_ANCHOR:
if path.len == 0:
path.AppendLine(p)
else:
if path.Node(-1) == points[0] and points[1] == p:
path.AppendLine(p)
else:
path.AppendBezier(points[0], points[1], p)
points = []
elif type == BEZIER_CONTROL:
points.append(p)
elif key == 'CLOSED':
closed = int(rest)
if closed and points:
if path.Node(-1) == points[0] and points[1] == path.Node(0):
path.AppendLine(path.Node(0))
else:
path.AppendBezier(points[0], points[1], path.Node(0))
path.ClosePath()
return tuple(paths)
def read_gimp_path(context, filename = ''):
if not filename:
filename = context.application.GetOpenFilename()
if not filename:
return
paths = read_path(filename)
object = PolyBezier(paths)
object.Transform(Trafo(1, 0, 0, -1, 0, 800))
#context.main_window.PlaceObject(object)
context.document.Insert(object)
Sketch.Scripting.AddFunction('read_gimp_path', 'Read Gimp Path',
read_gimp_path,
script_type = Sketch.Scripting.AdvancedScript)
|
