102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
# ***************************************************************************
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# * (c) Yorik van Havre (yorik@uncreated.net) 2014 *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * FreeCAD is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Lesser General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with FreeCAD; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************/
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TOOLTIP='''
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This is an example postprocessor file for the Path workbench. It is used
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to save a list of FreeCAD Path objects to a file.
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Read the Path Workbench documentation to know how to convert Path objects
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to GCode.
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'''
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import datetime
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now = datetime.datetime.now()
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# to distinguish python built-in open function from the one declared below
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if open.__module__ == '__builtin__':
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pythonopen = open
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def export(objectslist, filename,argstring):
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"called when freecad exports a list of objects"
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if len(objectslist) > 1:
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print "This script is unable to write more than one Path object"
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return
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obj = objectslist[0]
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if not hasattr(obj, "Path"):
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print "the given object is not a path"
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gcode = obj.Path.toGCode()
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gcode = parse(gcode)
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gfile = pythonopen(filename, "wb")
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gfile.write(gcode)
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gfile.close()
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def parse(inputstring):
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"parse(inputstring): returns a parsed output string"
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print "postprocessing..."
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output = ""
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# write some stuff first
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output += "N10 ;time:"+str(now)+"\n"
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output += "N20 G17 G20 G80 G40 G90\n"
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output += "N30 (Exported by FreeCAD)\n"
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linenr = 100
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lastcommand = None
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# treat the input line by line
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lines = inputstring.split("\n")
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for line in lines:
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# split the G/M command from the arguments
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if " " in line:
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command, args = line.split(" ", 1)
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else:
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# no space found, which means there are no arguments
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command = line
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args = ""
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# add a line number
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output += "N" + str(linenr) + " "
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# only print the command if it is not the same as the last one
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if command != lastcommand:
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output += command + " "
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output += args + "\n"
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# increment the line number
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linenr += 10
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# store the latest command
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lastcommand = command
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# write some more stuff at the end
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output += "N" + str(linenr) + " M05\n"
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output += "N" + str(linenr + 10) + " M25\n"
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output += "N" + str(linenr + 20) + " G00 X-1.0 Y1.0\n"
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output += "N" + str(linenr + 30) + " G17 G80 G40 G90\n"
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output += "N" + str(linenr + 40) + " M99\n"
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print "done postprocessing."
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return output
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print __name__ + " gcode postprocessor loaded."
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