File size: 3,597 Bytes
985c397 | 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 | # SPDX-License-Identifier: LGPL-2.1-or-later
# ***************************************************************************
# * Copyright (c) 2015 Yorik van Havre <yorik@uncreated.net> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * FreeCAD 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 Lesser General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with FreeCAD; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
"""
This is an preprocessor to read gcode files produced from slic3r.
"""
import os
import Path
import FreeCAD
from builtins import open as pyopen
def open(filename):
"called when freecad opens a file."
docname = os.path.splitext(os.path.basename(filename))[0]
doc = FreeCAD.newDocument(docname)
insert(filename, doc.Name)
def insert(filename, docname):
"called when freecad imports a file"
gfile = pyopen(filename)
gcode = gfile.read()
gfile.close()
gcode = parse(gcode)
doc = FreeCAD.getDocument(docname)
obj = doc.addObject("Path::Feature", "Path")
path = Path.Path(gcode)
obj.Path = path
def parse(inputstring):
"parse(inputstring): returns a parsed output string"
print("preprocessing...")
# split the input by line
lines = inputstring.split("\n")
output = ""
lastcommand = None
for l in lines:
# remove any leftover trailing and preceding spaces
l = l.strip()
if not l:
# discard empty lines
continue
if l[0].upper() in ["N"]:
# remove line numbers
l = l.split(" ", 1)[1]
if ";" in l:
# replace ; comments with ()
l = l.replace(";", "(")
l = l + ")"
if l[0].upper() in ["G", "M", "("]:
# found a G or M command: we store it
output += l + "\n"
last = l[0].upper()
for c in l[1:]:
if not c.isdigit():
break
else:
last += c
lastcommand = last
elif lastcommand:
# no G or M command: we repeat the last one
output += lastcommand + " " + l + "\n"
print("done preprocessing.")
return output
print(__name__ + " gcode preprocessor loaded.")
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