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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
|
#!/usr/bin/env python3
from sys import stderr, stdout
def monkey_patch():
from svgelements import SVGElement
def SVGElement__imatmul__(self,other):
print('Dummy SVGElement.__imatmul__')
return self
SVGElement.__imatmul__ = SVGElement__imatmul__
monkey_patch()
# --------------------------------------------------------------------
def open_svg(input):
from svgelements import SVG
svg = SVG.parse(input,reify=False)
print(type(svg[0]),file=stderr)
return svg
# --------------------------------------------------------------------
def get_bb(svg):
llx,lly,urx,ury = svg.bbox()
# print(llx,lly,urx,ury)
return llx,lly,urx,ury
# --------------------------------------------------------------------
def flush_left(svg):
from svgelements import Matrix
llx,lly,urx,ury = get_bb(svg)
svg *= Matrix.translate(-llx,-lly)
return svg
# --------------------------------------------------------------------
def scale_unit(svg):
from svgelements import Matrix
llx,lly,urx,ury = get_bb(svg)
scale = 1 / max(urx,ury)
svg *= Matrix.scale(scale)
return svg
# --------------------------------------------------------------------
def scale_to_cm(svg,px_per_cm = 37.79531157367762334497):
from svgelements import Matrix
scale = 1 / px_per_cm
svg *= Matrix.scale(scale)
return svg
# --------------------------------------------------------------------
def shift_to_centre(svg):
from svgelements import Matrix
llx,lly,urx,ury = get_bb(svg)
svg *= Matrix.translate(-urx/2,-ury/2)
svg *= Matrix.scale(1,-1)
svg.reify()
svg.render()
return svg
# --------------------------------------------------------------------
def flipy(svg):
from svgelements import Matrix
llx,lly,urx,ury = get_bb(svg)
svg *= Matrix.translate(-llx,-lly)
svg *= Matrix.scale(1,-1)
svg.reify()
svg.render()
llx,lly,urx,ury = get_bb(svg)
svg *= Matrix.translate(0,-lly)
return svg
# ====================================================================
def get_paths(svg):
'''Read in paths from the SVG image
This will recurse down groups for path operations
Returns
-------
paths : list
List of svg.path.Path objects
'''
from svgelements import Path, Group
from svg.path import parse_path
paths = []
for e in svg:
if isinstance(e,Path):
print('Parse path',file=stderr)
p = parse_path(e.d())
paths.append(p)
if isinstance(e,Group):
print('Parse group',file=stderr)
paths.append(get_paths(e))
return paths
# ====================================================================
def tikz_point(e,f):
'''Ouput a point
Parameters
----------
e : complex
The point
f : str
Floating point format
Return
------
coord : str
The point formatted for Tikz
'''
return f'({e.real:{f}},{e.imag:{f}})'
# --------------------------------------------------------------------
def tikz_move(e,f):
'''Output a move-to operation
Parameters
----------
e : complex
The point to move to
f : str
Floating point format
Return
------
coord : str
The point formatted for Tikz
'''
return tikz_point(e.start,f)
# --------------------------------------------------------------------
def tikz_line(e,f):
'''Output a line-to operation
Parameters
----------
e : complex
The point to draw line to
f : str
Floating point format
Return
------
line : str
The line-to operation to point
'''
return '-- '+tikz_point(e.end,f)
# --------------------------------------------------------------------
def tikz_curve(e,f):
'''Output a curve-to operation
Parameters
----------
e : curve operation (3 complex numbers)
The control points (2 of them) and the point to draw curve to
f : str
Floating point format
Return
------
curve : str
The curve-to operation to point
'''
return \
'.. controls '+tikz_point(e.control1,f) + \
' and ' +tikz_point(e.control2,f) + \
' ..' +tikz_point(e.end,f)
# --------------------------------------------------------------------
def tikz_close(e,f):
'''Ouput a close (or cycle) operation
'''
return '-- cycle'
# ====================================================================
def path_to_tikz(path,f='8.5f'):
'''Convert a svt.path.Path to a TikZ path
Parameters
----------
path : svg.path.Path
Path to convert
f : str
floating point format to use
Returns
-------
code : list
List of Tikz path operations as strings
'''
from svg.path import Line, Move, Close, CubicBezier, Path
code = []
for e in path:
if isinstance(e, Move): code.append(tikz_move(e, f))
elif isinstance(e, Line): code.append(tikz_line(e, f))
elif isinstance(e, Close): code.append(tikz_close(e,f))
elif isinstance(e, CubicBezier): code.append(tikz_curve(e,f))
elif isinstance(e, Path): code.extend(path_to_tikz(e,f))
else:
print(f'Unknown type: {type(e)}',file=stderr)
return code
# ====================================================================
def doc_header(output=stdout):
'''Prinout put standalone document header
'''
print(r'''%
\documentclass{standalone}
\usepackage{tikz}
\begin{document}%''',file=output)
# --------------------------------------------------------------------
def doc_footer(output=stdout):
'''Prinout put standalone document footer
'''
print(r'''%
\end{document}''',file=output)
# --------------------------------------------------------------------
def path_to_pic(path,name,output,format):
'''Output a Tikz pic definition from the path
Parameters
----------
path : Path
The path to convert
name : str
The name of the pic
output : File
Output file
format : str
Floating point format
'''
print(fr'''\tikzset{{%
{name}/.pic={{%
\path[pic actions]''',file=output,end='\n ')
code = path_to_tikz(path,format)
print('\n '.join(code),file=output)
print(' ;\n }',file=output)
print('}%',file=output)
# ====================================================================
# ====================================================================
def doit(input='soldier_side.svg',
centre=True,
unit=True,
output=stdout,
standalone=False,
format='8.5f'):
svg = open_svg(input)
orig_bb = get_bb(svg)
if centre or unit:
svg = flush_left(svg)
if unit:
svg = scale_unit(svg)
else:
svg = scale_to_cm(svg)
if centre:
svg = shift_to_centre(svg)
else:
svg = flipy(svg)
new_bb = get_bb(svg)
paths = get_paths(svg)
if standalone:
doc_header(output)
print(f'% Original bounding box: ({orig_bb[0]},{orig_bb[1]}) ({orig_bb[2]},{orig_bb[3]})',
file=output)
print(f'% New bounding box: ({new_bb[0]},{new_bb[1]}) ({new_bb[2]},{new_bb[3]})',
file=output)
pics = []
for i, path in enumerate(paths):
name = f'pic_{i:03d}'
path_to_pic(path,name,output,format)
pics.append(name)
if standalone:
print(r'\begin{tikzpicture}%',file=output)
x = 0
y = 0
for i, name in enumerate(pics):
if x > 10:
x = 0
y += 2
print(fr' \pic[draw,fill=red] at ({x},{y}) {{{name}}};%',
file=output)
x += 2
print(r'\end{tikzpicture}%',file=output)
doc_footer(output)
# ====================================================================
def test(svgfile='soldier_side.svg',tikzfile=stdout,standalone=True):
with open(svgfile,'r') as input:
with open(tikzfile,'w') if isinstance(tikzfile,str) else tikzfile as output:
doit(input=input,output=output,standalone=standalone)
# ====================================================================
if __name__ == '__main__':
from argparse import ArgumentParser, FileType
ap = ArgumentParser(description='Convert SVG to unit Tikz picture')
ap.add_argument('input',type=FileType('r'),nargs='?',default='soldier_side.svg',
help='Input SVG file')
ap.add_argument('-o','--output',type=FileType('w'),default=None,
help='Output Tikz file')
ap.add_argument('-s','--standalone',action='store_true',default=True,
help='Write standalone document')
ap.add_argument('-p','--picture',action='store_false',dest='standalone',
help='Only write picture')
ap.add_argument('-f','--format',type=str,default='8.5f',
help='Format for coordinates')
ap.add_argument('-O','--original-size',dest='unit',action='store_false',
help='Do no scale paths to unit size')
ap.add_argument('-S','--unit-size',dest='unit',action='store_true',
help='Scale paths to unit size')
ap.add_argument('-Z','--no-centre',dest='centre',action='store_false',
help='Do not centre paths')
ap.add_argument('-C','--centre',dest='centre',action='store_true',
help='Centre paths')
args = ap.parse_args()
if args.output is None:
from pathlib import Path
inname = Path(args.input.name)
outname = inname.with_suffix('.tex')
args.output = open(outname,'w')
doit(input = args.input,
unit = args.unit,
centre = args.centre,
output = args.output,
standalone = args.standalone,
format = args.format)
|