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mightyscape-1.1-deprecated/extensions/fablabchemnitz/roland_eps_export.py

297 lines
11 KiB
Python

#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
'''
Roland CutStudio export script
Copyright (C) 2014 - 2020 Max Gaukler <development@maxgaukler.de>
skeleton based on visicut Inkscape Plugin :
Copyright (C) 2012 Thomas Oster, thomas.oster@rwth-aachen.de
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
'''
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
from __future__ import absolute_import
from builtins import open
from builtins import map
from builtins import str
from builtins import range
import sys
import os
from subprocess import Popen
import subprocess
import shutil
import numpy
from functools import reduce
import inkex
import filecmp
from pathlib import Path
from functools import lru_cache
import atexit
DEVNULL = open(os.devnull, 'w')
atexit.register(DEVNULL.close)
def message(s):
sys.stderr.write(s+"\n")
def debug(s):
message(s)
# copied from https://github.com/t-oster/roland_eps/blob/0abe785a30d5d5085dd3b5953b38239b1ff83358/tools/inkscape_extension/roland_eps_export.py
def which(program, raiseError, extraPaths=[], subdir=None):
"""
find program in the $PATH environment variable and in $extraPaths.
If $subdir is given, also look in the given subdirectory of each $PATH entry.
"""
pathlist=os.environ["PATH"].split(os.pathsep)
if "nt" in os.name:
pathlist.append(os.environ.get("ProgramFiles","C:\Program Files\\"))
pathlist.append(os.environ.get("ProgramFiles(x86)","C:\Program Files (x86)\\"))
pathlist.append("C:\Program Files\\") # needed for 64bit inkscape on 64bit Win7 machines
pathlist.append(os.path.dirname(os.path.dirname(os.getcwd()))) # portable application in the current directory
pathlist += extraPaths
if subdir:
pathlist = [os.path.join(p, subdir) for p in pathlist] + pathlist
def is_exe(fpath):
return os.path.isfile(fpath) and (os.access(fpath, os.X_OK) or fpath.endswith(".exe"))
for path in pathlist:
exe_file = os.path.join(path, program)
if is_exe(exe_file):
return exe_file
if raiseError:
raise Exception("Cannot find " + str(program) + " in any of these paths: " + str(pathlist) + ". Either the program is not installed, PATH is not set correctly, or this is a bug.")
else:
return None
# header
# for debugging purposes you can open the resulting EPS file in Inkscape,
# select all, ungroup multiple times
# --> now you can view the exported lines in inkscape
prefix="""
%!PS-Adobe-3.0 EPSF-3.0
%%LanguageLevel: 2
%%BoundingBox -10000 -10000 10000 10000
%%EndComments
%%BeginSetup
%%EndSetup
%%BeginProlog
% This code (until EndProlog) is from an inkscape-exported EPS, copyright unknown, see cairo-library
save
50 dict begin
/q { gsave } bind def
/Q { grestore } bind def
/cm { 6 array astore concat } bind def
/w { setlinewidth } bind def
/J { setlinecap } bind def
/j { setlinejoin } bind def
/M { setmiterlimit } bind def
/d { setdash } bind def
/m { moveto } bind def
/l { lineto } bind def
/c { curveto } bind def
/h { closepath } bind def
/re { exch dup neg 3 1 roll 5 3 roll moveto 0 rlineto
0 exch rlineto 0 rlineto closepath } bind def
/S { stroke } bind def
/f { fill } bind def
/f* { eofill } bind def
/n { newpath } bind def
/W { clip } bind def
/W* { eoclip } bind def
/BT { } bind def
/ET { } bind def
/pdfmark where { pop globaldict /?pdfmark /exec load put }
{ globaldict begin /?pdfmark /pop load def /pdfmark
/cleartomark load def end } ifelse
/BDC { mark 3 1 roll /BDC pdfmark } bind def
/EMC { mark /EMC pdfmark } bind def
/cairo_store_point { /cairo_point_y exch def /cairo_point_x exch def } def
/Tj { show currentpoint cairo_store_point } bind def
/TJ {
{
dup
type /stringtype eq
{ show } { -0.001 mul 0 cairo_font_matrix dtransform rmoveto } ifelse
} forall
currentpoint cairo_store_point
} bind def
/cairo_selectfont { cairo_font_matrix aload pop pop pop 0 0 6 array astore
cairo_font exch selectfont cairo_point_x cairo_point_y moveto } bind def
/Tf { pop /cairo_font exch def /cairo_font_matrix where
{ pop cairo_selectfont } if } bind def
/Td { matrix translate cairo_font_matrix matrix concatmatrix dup
/cairo_font_matrix exch def dup 4 get exch 5 get cairo_store_point
/cairo_font where { pop cairo_selectfont } if } bind def
/Tm { 2 copy 8 2 roll 6 array astore /cairo_font_matrix exch def
cairo_store_point /cairo_font where { pop cairo_selectfont } if } bind def
/g { setgray } bind def
/rg { setrgbcolor } bind def
/d1 { setcachedevice } bind def
%%EndProlog
%%Page: 1 1
%%BeginPageSetup
%%PageBoundingBox: -10000 -10000 10000 10000
%%EndPageSetup
% This is a severely crippled fucked-up pseudo-postscript for importing in Roland CutStudio
% Do not even try to open it with something else
% FIXME opening with inkscape currently does not show any objects, although it worked some time in the past
% Inkscape header, not used by cutstudio
% Start
q -10000 -10000 10000 10000 rectclip q
0 g
0.286645 w
0 J
0 j
[] 0.0 d
4 M q
% Cutstudio Start
"""
postfix="""
% Cutstudio End
%this is necessary for CutStudio so that the last line isnt skipped:
0 0 m
% Inkscape footer
S Q
Q Q
showpage
%%Trailer
end restore
%%EOF
"""
class EPS2CutstudioEPS(inkex.OutputExtension):
def save(self, stream):
def outputFromStack(stack, n, transformCoordinates=True):
arr=stack[-(n+1):-1]
if transformCoordinates:
arrTransformed=[]
for i in range(n//2):
arrTransformed+=transform(arr[2*i], arr[2*i+1])
return output(arrTransformed+[stack[-1]])
else:
return output(arr+[stack[-1]])
def transform(x, y):
#debug("trafo from: {} {}".format(x, y))
p=numpy.array([[float(x),float(y),1]]).transpose()
multiply = lambda a, b: numpy.matmul(a, b)
# concatenate transformations by multiplying: new = transformation x previousTransformtaion
m=reduce(multiply, scalingStack[::-1])
m=m.transpose()
#debug("with {}".format(m))
pnew = numpy.matmul(m, p)
x=float(pnew[0])
y=float(pnew[1])
#debug("to: {} {}".format(x, y))
return [x, y]
def toString(v):
"""
like str(), but gives the exact same output for floats across python2 and python3
"""
if isinstance(v, (type(float()), type(int()))):
return repr(v)
else:
return str(v)
def outputMoveto(x, y):
[xx, yy]=transform(x, y)
return output([toString(xx), toString(yy), "m"])
def outputLineto(x, y):
[xx, yy]=transform(x, y)
return output([toString(xx), toString(yy), "l"])
def output(array):
array=list(map(toString, array))
output=" ".join(array)
#debug("OUTPUT: "+output)
return output + "\n"
if os.name=="nt": # windows
INKSCAPEBIN = which("inkscape.exe", True, subdir="Inkscape")
else:
INKSCAPEBIN=which("inkscape", True)
filename = self.options.input_file
shutil.copyfile(filename, filename+".filtered.svg")
cmd = [INKSCAPEBIN, "-T", "--export-ignore-filters", "--export-area-drawing", "--export-filename="+filename+".inkscape.eps", filename+".filtered.svg"]
inkscape_eps_file = filename + ".inkscape.eps"
assert 0 == subprocess.call(cmd, stderr=DEVNULL), 'EPS conversion failed: command returned error: ' + '"' + '" "'.join(cmd) + '"'
assert os.path.exists(inkscape_eps_file), 'EPS conversion failed: command did not create result file: ' + '"' + '" "'.join(cmd) + '"'
stack=[]
scalingStack=[numpy.identity(3)]
lastMoveCoordinates=None
outputStr=prefix
inputFile=open(inkscape_eps_file)
for line in inputFile.readlines():
line=line.strip()
if line.startswith("%"):
# comment line
continue
if line.endswith("re W n"):
continue # ignore clipping rectangle
#debug(line)
for item in line.split(" "):
item=item.strip()
if item=="":
continue
#debug("INPUT: " + item.__repr__())
stack.append(item)
if item=="h": # close path
assert lastMoveCoordinates, "closed path before first moveto"
outputStr += outputLineto(float(lastMoveCoordinates[0]), float(lastMoveCoordinates[1]))
elif item == "c": # bezier curveto
outputStr += outputFromStack(stack, 6)
stack=[]
elif item=="re": # rectangle
x=float(stack[-5])
y=float(stack[-4])
dx=float(stack[-3])
dy=float(stack[-2])
outputStr += outputMoveto(x, y)
outputStr += outputLineto(x+dx, y)
outputStr += outputLineto(x+dx, y+dy)
outputStr += outputLineto(x, y+dy)
outputStr += outputLineto(x, y)
elif item=="cm": # matrix transformation
newTrafo=numpy.array([[float(stack[-7]), float(stack[-6]), 0], [float(stack[-5]), float(stack[-4]), 0], [float(stack[-3]), float(stack[-2]), 1]])
#debug("applying trafo "+str(newTrafo))
scalingStack[-1] = numpy.matmul(scalingStack[-1], newTrafo)
elif item=="q": # save graphics state to stack
scalingStack.append(numpy.identity(3))
elif item=="Q": # pop graphics state from stack
scalingStack.pop()
elif item in ["m", "l"]:
if item=="m": # moveto
lastMoveCoordinates=stack[-3:-1]
elif item=="l": # lineto
pass
outputStr += outputFromStack(stack, 2)
stack=[]
else:
pass # do nothing
outputStr += postfix
inputFile.close()
stream.write(outputStr.encode('utf-8'))
if __name__ == '__main__':
EPS2CutstudioEPS().run()