417 lines
14 KiB
Python
417 lines
14 KiB
Python
# ***************************************************************************
|
|
# * Copyright (c) 2014 sliptonic <shopinthewoods@gmail.com> *
|
|
# * *
|
|
# * 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 *
|
|
# * *
|
|
# ***************************************************************************/
|
|
|
|
# ****************************************************************************
|
|
# * Modifications by Samuel Mayer (samuel.mayer@posteo.de) *
|
|
# * 2021 *
|
|
# * *
|
|
# * This postprocessor is based on the linuxcnc_post coming with FreeCAD *
|
|
# * 0.19 and modified to work with Kinetic-NC (cnc-step.com) and Beamicon2 *
|
|
# * (benezan-electronics.de) (up to 4 Axis) *
|
|
# * *
|
|
# ***************************************************************************/
|
|
|
|
import FreeCAD
|
|
from FreeCAD import Units
|
|
import Path
|
|
import Path.Post.Utils as PostUtils
|
|
import argparse
|
|
import datetime
|
|
import shlex
|
|
from PathScripts import PathUtils
|
|
import PathScripts.PathUtils as PathUtils
|
|
from builtins import open as pyopen
|
|
|
|
TOOLTIP = """
|
|
This is a postprocessor file for the Path workbench. It is used to
|
|
take a pseudo-G-code fragment outputted by a Path object, and output
|
|
real G-code suitable for the KineticNC/Beamicon2 Control Software for up to 4 Axis (3 plus rotary).
|
|
The CORNER_MAX Values are set for a mill with max travel of 1000mm in X, 600mm in Y and 300mm in Z direction.
|
|
This postprocessor, once placed in the appropriate PathScripts folder, can be used directly from inside
|
|
FreeCAD, via the GUI importer or via python scripts with:
|
|
|
|
import KineticNCBeamicon2_post
|
|
KineticNCBeamicon2_post.export(object,"/path/to/file.ncc","")
|
|
"""
|
|
|
|
now = datetime.datetime.now()
|
|
|
|
parser = argparse.ArgumentParser(prog="linuxcnc", add_help=False)
|
|
parser.add_argument("--no-header", action="store_true", help="suppress header output")
|
|
parser.add_argument("--no-comments", action="store_true", help="suppress comment output")
|
|
parser.add_argument("--line-numbers", action="store_true", help="prefix with line numbers")
|
|
parser.add_argument(
|
|
"--no-show-editor",
|
|
action="store_true",
|
|
help="don't pop up editor before writing output",
|
|
)
|
|
parser.add_argument("--precision", default="3", help="number of digits of precision, default=3")
|
|
parser.add_argument(
|
|
"--preamble",
|
|
help='set commands to be issued before the first command, default="G17\nG90"',
|
|
)
|
|
parser.add_argument(
|
|
"--postamble",
|
|
help='set commands to be issued after the last command, default="M05\nG17 G90\nM2"',
|
|
)
|
|
parser.add_argument(
|
|
"--inches", action="store_true", help="Convert output for US imperial mode (G20)"
|
|
)
|
|
parser.add_argument(
|
|
"--modal",
|
|
action="store_true",
|
|
help="Output the Same G-command Name USE NonModal Mode",
|
|
)
|
|
parser.add_argument("--axis-modal", action="store_true", help="Output the Same Axis Value Mode")
|
|
|
|
TOOLTIP_ARGS = parser.format_help()
|
|
|
|
# These globals set common customization preferences
|
|
OUTPUT_COMMENTS = True
|
|
OUTPUT_HEADER = True
|
|
OUTPUT_LINE_NUMBERS = False
|
|
SHOW_EDITOR = True
|
|
MODAL = False # if true commands are suppressed if the same as previous line.
|
|
OUTPUT_DOUBLES = True # if false duplicate axis values are suppressed if the same as previous line.
|
|
COMMAND_SPACE = " "
|
|
LINENR = 100 # line number starting value
|
|
|
|
# These globals will be reflected in the Machine configuration of the project
|
|
UNITS = "G21" # G21 for metric, G20 for us standard
|
|
UNIT_SPEED_FORMAT = "mm/min"
|
|
UNIT_FORMAT = "mm"
|
|
|
|
MACHINE_NAME = "not set"
|
|
CORNER_MIN = {"x": 0, "y": 0, "z": 0}
|
|
CORNER_MAX = {"x": 1000, "y": 600, "z": 300}
|
|
PRECISION = 3
|
|
|
|
# Preamble text will appear at the beginning of the GCODE output file.
|
|
PREAMBLE = """%
|
|
G17 G21 G40 G49 G80 G90
|
|
M08
|
|
"""
|
|
|
|
# Postamble text will appear following the last operation.
|
|
POSTAMBLE = """M05 M09
|
|
G17 G90 G80 G40
|
|
M30
|
|
"""
|
|
|
|
# Pre operation text will be inserted before every operation
|
|
PRE_OPERATION = """"""
|
|
|
|
# Post operation text will be inserted after every operation
|
|
POST_OPERATION = """"""
|
|
|
|
# Tool Change commands will be inserted before a tool change
|
|
TOOL_CHANGE = """M05
|
|
M09"""
|
|
|
|
|
|
def processArguments(argstring):
|
|
global OUTPUT_HEADER
|
|
global OUTPUT_COMMENTS
|
|
global OUTPUT_LINE_NUMBERS
|
|
global SHOW_EDITOR
|
|
global PRECISION
|
|
global PREAMBLE
|
|
global POSTAMBLE
|
|
global UNITS
|
|
global UNIT_SPEED_FORMAT
|
|
global UNIT_FORMAT
|
|
global MODAL
|
|
global OUTPUT_DOUBLES
|
|
|
|
try:
|
|
args = parser.parse_args(shlex.split(argstring))
|
|
if args.no_header:
|
|
OUTPUT_HEADER = False
|
|
if args.no_comments:
|
|
OUTPUT_COMMENTS = False
|
|
if args.line_numbers:
|
|
OUTPUT_LINE_NUMBERS = True
|
|
if args.no_show_editor:
|
|
SHOW_EDITOR = False
|
|
print("Show editor = %d" % SHOW_EDITOR)
|
|
PRECISION = args.precision
|
|
if args.preamble is not None:
|
|
PREAMBLE = args.preamble
|
|
if args.postamble is not None:
|
|
POSTAMBLE = args.postamble
|
|
if args.inches:
|
|
UNITS = "G20"
|
|
UNIT_SPEED_FORMAT = "in/min"
|
|
UNIT_FORMAT = "in"
|
|
PRECISION = 4
|
|
if args.modal:
|
|
MODAL = True
|
|
if args.axis_modal:
|
|
print("here")
|
|
OUTPUT_DOUBLES = False
|
|
|
|
except:
|
|
return False
|
|
|
|
return True
|
|
|
|
|
|
def export(objectslist, filename, argstring):
|
|
if not processArguments(argstring):
|
|
return None
|
|
global UNITS
|
|
global UNIT_FORMAT
|
|
global UNIT_SPEED_FORMAT
|
|
|
|
for obj in objectslist:
|
|
if not hasattr(obj, "Path"):
|
|
print(
|
|
"the object " + obj.Name + " is not a path. Please select only path and Compounds."
|
|
)
|
|
return None
|
|
|
|
print("postprocessing...")
|
|
gcode = ""
|
|
|
|
# write header
|
|
if OUTPUT_HEADER:
|
|
gcode += linenumber() + "(Exported by FreeCAD)\n"
|
|
gcode += linenumber() + "(Post Processor: " + __name__ + ")\n"
|
|
gcode += linenumber() + "(Output Time:" + str(now) + ")\n"
|
|
|
|
# Write the preamble
|
|
if OUTPUT_COMMENTS:
|
|
gcode += linenumber() + "(begin preamble)\n"
|
|
for line in PREAMBLE.splitlines(False):
|
|
gcode += linenumber() + line + "\n"
|
|
gcode += linenumber() + UNITS + "\n"
|
|
|
|
for obj in objectslist:
|
|
|
|
# fetch machine details
|
|
job = PathUtils.findParentJob(obj)
|
|
|
|
myMachine = "not set"
|
|
|
|
if hasattr(job, "MachineName"):
|
|
myMachine = job.MachineName
|
|
|
|
if hasattr(job, "MachineUnits"):
|
|
if job.MachineUnits == "Metric":
|
|
UNITS = "G21"
|
|
UNIT_FORMAT = "mm"
|
|
UNIT_SPEED_FORMAT = "mm/min"
|
|
else:
|
|
UNITS = "G20"
|
|
UNIT_FORMAT = "in"
|
|
UNIT_SPEED_FORMAT = "in/min"
|
|
|
|
# do the pre_op
|
|
if OUTPUT_COMMENTS:
|
|
gcode += linenumber() + "(begin operation: %s)\n" % obj.Label
|
|
gcode += linenumber() + "(machine: %s, %s)\n" % (
|
|
myMachine,
|
|
UNIT_SPEED_FORMAT,
|
|
)
|
|
for line in PRE_OPERATION.splitlines(True):
|
|
gcode += linenumber() + line
|
|
|
|
gcode += parse(obj)
|
|
|
|
# do the post_op
|
|
if OUTPUT_COMMENTS:
|
|
gcode += linenumber() + "(finish operation: %s)\n" % obj.Label
|
|
for line in POST_OPERATION.splitlines(True):
|
|
gcode += linenumber() + line
|
|
|
|
# do the post_amble
|
|
if OUTPUT_COMMENTS:
|
|
gcode += "(begin postamble)\n"
|
|
for line in POSTAMBLE.splitlines(True):
|
|
gcode += linenumber() + line
|
|
|
|
if FreeCAD.GuiUp and SHOW_EDITOR:
|
|
dia = PostUtils.GCodeEditorDialog()
|
|
dia.editor.setText(gcode)
|
|
result = dia.exec_()
|
|
if result:
|
|
final = dia.editor.toPlainText()
|
|
else:
|
|
final = gcode
|
|
else:
|
|
final = gcode
|
|
|
|
print("done postprocessing.")
|
|
|
|
if not filename == "-":
|
|
gfile = pyopen(filename, "w")
|
|
gfile.write(final)
|
|
gfile.close()
|
|
|
|
return final
|
|
|
|
|
|
def linenumber():
|
|
global LINENR
|
|
if OUTPUT_LINE_NUMBERS is True:
|
|
LINENR += 10
|
|
return "N" + str(LINENR) + " "
|
|
return ""
|
|
|
|
|
|
def parse(pathobj):
|
|
global PRECISION
|
|
global MODAL
|
|
global OUTPUT_DOUBLES
|
|
global UNIT_FORMAT
|
|
global UNIT_SPEED_FORMAT
|
|
|
|
out = ""
|
|
lastcommand = None
|
|
precision_string = "." + str(PRECISION) + "f"
|
|
currLocation = {} # keep track for no doubles
|
|
|
|
# the order of parameters
|
|
# linuxcnc doesn't want K properties on XY plane Arcs need work.
|
|
params = [
|
|
"X",
|
|
"Y",
|
|
"Z",
|
|
"A",
|
|
"B",
|
|
"C",
|
|
"I",
|
|
"J",
|
|
"F",
|
|
"S",
|
|
"T",
|
|
"Q",
|
|
"R",
|
|
"L",
|
|
"H",
|
|
"D",
|
|
"P",
|
|
]
|
|
firstmove = Path.Command("G0", {"X": -1, "Y": -1, "Z": -1, "F": 0.0})
|
|
currLocation.update(firstmove.Parameters) # set First location Parameters
|
|
|
|
if hasattr(pathobj, "Group"): # We have a compound or project.
|
|
# if OUTPUT_COMMENTS:
|
|
# out += linenumber() + "(compound: " + pathobj.Label + ")\n"
|
|
for p in pathobj.Group:
|
|
out += parse(p)
|
|
return out
|
|
else: # parsing simple path
|
|
|
|
# groups might contain non-path things like stock.
|
|
if not hasattr(pathobj, "Path"):
|
|
return out
|
|
|
|
# if OUTPUT_COMMENTS:
|
|
# out += linenumber() + "(" + pathobj.Label + ")\n"
|
|
|
|
for c in PathUtils.getPathWithPlacement(pathobj).Commands:
|
|
|
|
outstring = []
|
|
command = c.Name
|
|
outstring.append(command)
|
|
|
|
# if modal: suppress the command if it is the same as the last one
|
|
if MODAL is True:
|
|
if command == lastcommand:
|
|
outstring.pop(0)
|
|
|
|
if c.Name[0] == "(" and not OUTPUT_COMMENTS: # command is a comment
|
|
continue
|
|
|
|
# Now add the remaining parameters in order
|
|
for param in params:
|
|
if param in c.Parameters:
|
|
if param == "F" and (
|
|
currLocation[param] != c.Parameters[param] or OUTPUT_DOUBLES
|
|
):
|
|
if c.Name not in [
|
|
"G0",
|
|
"G00",
|
|
]: # linuxcnc doesn't use rapid speeds
|
|
speed = Units.Quantity(c.Parameters["F"], FreeCAD.Units.Velocity)
|
|
if speed.getValueAs(UNIT_SPEED_FORMAT) > 0.0:
|
|
outstring.append(
|
|
param
|
|
+ format(
|
|
float(speed.getValueAs(UNIT_SPEED_FORMAT)),
|
|
precision_string,
|
|
)
|
|
)
|
|
else:
|
|
continue
|
|
elif param == "T":
|
|
outstring.append(param + str(int(c.Parameters["T"])))
|
|
elif param == "H":
|
|
outstring.append(param + str(int(c.Parameters["H"])))
|
|
elif param == "D":
|
|
outstring.append(param + str(int(c.Parameters["D"])))
|
|
elif param == "S":
|
|
outstring.append(param + str(int(c.Parameters["S"])))
|
|
else:
|
|
if (
|
|
(not OUTPUT_DOUBLES)
|
|
and (param in currLocation)
|
|
and (currLocation[param] == c.Parameters[param])
|
|
):
|
|
continue
|
|
else:
|
|
pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length)
|
|
outstring.append(
|
|
param + format(float(pos.getValueAs(UNIT_FORMAT)), precision_string)
|
|
)
|
|
|
|
# store the latest command
|
|
lastcommand = command
|
|
currLocation.update(c.Parameters)
|
|
|
|
# Check for Tool Change:
|
|
if command == "M6":
|
|
# if OUTPUT_COMMENTS:
|
|
# out += linenumber() + "(begin toolchange)\n"
|
|
for line in TOOL_CHANGE.splitlines(True):
|
|
out += linenumber() + line
|
|
|
|
if command == "message":
|
|
if OUTPUT_COMMENTS is False:
|
|
out = []
|
|
else:
|
|
outstring.pop(0) # remove the command
|
|
|
|
# prepend a line number and append a newline
|
|
if len(outstring) >= 1:
|
|
if OUTPUT_LINE_NUMBERS:
|
|
outstring.insert(0, (linenumber()))
|
|
|
|
# append the line to the final output
|
|
for w in outstring:
|
|
out += w + COMMAND_SPACE
|
|
out = out.strip() + "\n"
|
|
|
|
return out
|