256 lines
8.8 KiB
Python
256 lines
8.8 KiB
Python
# -*- coding: utf-8 -*-
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# ***************************************************************************
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# * Copyright (c) 2015 Dan Falck <ddfalck@gmail.com> *
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# * Copyright (c) 2020 Schildkroet *
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# * Copyright (c) 2022 Larry Woestman <LarryWoestman2@gmail.com> *
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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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from __future__ import print_function
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from PathScripts import PostUtilsArguments
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from PathScripts import PostUtilsExport
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#
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# The following variables need to be global variables
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# to keep the PathPostProcessor.load method happy:
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#
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# TOOLTIP
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# TOOLTIP_ARGS
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# UNITS
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#
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# The "argument_defaults", "arguments_visible", and the "values" hashes
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# need to be defined before the "init_shared_arguments" routine can be
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# called to create TOOLTIP_ARGS, so they also end up having to be globals.
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# TOOLTIP_ARGS can be defined, so they end up being global variables also.
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#
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TOOLTIP = """
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This is a postprocessor file for the Path workbench. It is used to
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take a pseudo-gcode fragment outputted by a Path object, and output
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real GCode suitable for a centroid 3 axis mill. This postprocessor, once placed
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in the appropriate PathScripts folder, can be used directly from inside
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FreeCAD, via the GUI importer or via python scripts with:
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import refactored_centroid_post
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refactored_centroid_post.export(object,"/path/to/file.ncc","")
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"""
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#
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# Default to metric mode
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#
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UNITS = "G21"
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def init_values(values):
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"""Initialize values that are used throughout the postprocessor."""
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#
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global UNITS
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PostUtilsArguments.init_shared_values(values)
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#
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# Set any values here that need to override the default values set
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# in the init_shared_values routine.
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#
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# Use 4 digits for axis precision by default.
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#
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values["AXIS_PRECISION"] = 4
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values["DEFAULT_AXIS_PRECISION"] = 4
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values["DEFAULT_INCH_AXIS_PRECISION"] = 4
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#
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# Use ";" as the comment symbol
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#
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values["COMMENT_SYMBOL"] = ";"
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#
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# Use 1 digit for feed precision by default.
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#
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values["FEED_PRECISION"] = 1
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values["DEFAULT_FEED_PRECISION"] = 1
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values["DEFAULT_INCH_FEED_PRECISION"] = 1
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#
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# This value usually shows up in the post_op comment as "Finish operation:".
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# Change it to "End" to produce "End operation:".
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#
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values["FINISH_LABEL"] = "End"
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#
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# If this value is True, then a list of tool numbers
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# with their labels are output just before the preamble.
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#
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values["LIST_TOOLS_IN_PREAMBLE"] = True
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#
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# Used in the argparser code as the "name" of the postprocessor program.
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# This would normally show up in the usage message in the TOOLTIP_ARGS,
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# but we are suppressing the usage message, so it doesn't show up after all.
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#
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values["MACHINE_NAME"] = "Centroid"
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#
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# This list controls the order of parameters in a line during output.
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# centroid doesn't want K properties on XY plane; Arcs need work.
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#
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values["PARAMETER_ORDER"] = [
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"X",
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"Y",
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"Z",
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"A",
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"B",
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"I",
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"J",
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"F",
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"S",
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"T",
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"Q",
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"R",
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"L",
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"H",
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]
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#
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# Any commands in this value will be output as the last commands
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# in the G-code file.
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#
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values["POSTAMBLE"] = """M99"""
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values["POSTPROCESSOR_FILE_NAME"] = __name__
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#
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# Any commands in this value will be output after the header and
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# safety block at the beginning of the G-code file.
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#
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values["PREAMBLE"] = """G53 G00 G17"""
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#
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# Output any messages.
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#
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values["REMOVE_MESSAGES"] = False
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#
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# Any commands in this value are output after the header but before the preamble,
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# then again after the TOOLRETURN but before the POSTAMBLE.
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#
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values["SAFETYBLOCK"] = """G90 G80 G40 G49"""
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#
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# Do not show the current machine units just before the PRE_OPERATION.
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#
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values["SHOW_MACHINE_UNITS"] = False
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#
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# Do not show the current operation label just before the PRE_OPERATION.
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#
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values["SHOW_OPERATION_LABELS"] = False
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#
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# Do not output an M5 command to stop the spindle for tool changes.
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#
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values["STOP_SPINDLE_FOR_TOOL_CHANGE"] = False
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#
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# spindle off, height offset canceled, spindle retracted
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# (M25 is a centroid command to retract spindle)
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#
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values[
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"TOOLRETURN"
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] = """M5
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M25
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G49 H0"""
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values["UNITS"] = UNITS
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#
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# Default to not outputting a G43 following tool changes
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#
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values["USE_TLO"] = False
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#
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# This was in the original centroid postprocessor file
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# but does not appear to be used anywhere.
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#
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# ZAXISRETURN = """G91 G28 X0 Z0 G90"""
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#
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def init_argument_defaults(argument_defaults):
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"""Initialize which arguments (in a pair) are shown as the default argument."""
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PostUtilsArguments.init_argument_defaults(argument_defaults)
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#
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# Modify which argument to show as the default in flag-type arguments here.
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# If the value is True, the first argument will be shown as the default.
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# If the value is False, the second argument will be shown as the default.
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#
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# For example, if you want to show Metric mode as the default, use:
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# argument_defaults["metric_inch"] = True
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#
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# If you want to show that "Don't pop up editor for writing output" is
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# the default, use:
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# argument_defaults["show-editor"] = False.
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#
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# Note: You also need to modify the corresponding entries in the "values" hash
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# to actually make the default value(s) change to match.
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#
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def init_arguments_visible(arguments_visible):
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"""Initialize which argument pairs are visible in TOOLTIP_ARGS."""
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PostUtilsArguments.init_arguments_visible(arguments_visible)
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#
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# Modify the visibility of any arguments from the defaults here.
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#
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arguments_visible["axis-modal"] = False
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arguments_visible["precision"] = False
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arguments_visible["tlo"] = False
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def init_arguments(values, argument_defaults, arguments_visible):
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"""Initialize the shared argument definitions."""
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parser = PostUtilsArguments.init_shared_arguments(values, argument_defaults, arguments_visible)
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#
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# Add any argument definitions that are not shared with all other postprocessors here.
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#
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return parser
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#
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# Creating global variables and using functions to modify them
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# is useful for being able to test things later.
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#
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values = {}
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init_values(values)
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argument_defaults = {}
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init_argument_defaults(argument_defaults)
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arguments_visible = {}
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init_arguments_visible(arguments_visible)
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parser = init_arguments(values, argument_defaults, arguments_visible)
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#
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# The TOOLTIP_ARGS value is created from the help information about the arguments.
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#
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TOOLTIP_ARGS = parser.format_help()
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def export(objectslist, filename, argstring):
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"""Postprocess the objects in objectslist to filename."""
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#
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global parser
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global UNITS
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global values
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# print(parser.format_help())
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(flag, args) = PostUtilsArguments.process_shared_arguments(values, parser, argstring)
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if not flag:
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return None
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#
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# Process any additional arguments here
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#
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#
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# Update the global variables that might have been modified
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# while processing the arguments.
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#
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UNITS = values["UNITS"]
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return PostUtilsExport.export_common(values, objectslist, filename)
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