103 lines
3.8 KiB
Python
103 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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# ***************************************************************************
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# * Copyright (c) 2021 sliptonic <shopinthewoods@gmail.com> *
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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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# * This program 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 Library 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 this program; 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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import Path
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from enum import Enum
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__title__ = "Toolchange toolpath Generator"
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__author__ = "sliptonic (Brad Collette)"
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__url__ = "https://www.freecad.org"
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__doc__ = "Generates the rotation toolpath"
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if False:
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Path.Log.setLevel(Path.Log.Level.DEBUG, Path.Log.thisModule())
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Path.Log.trackModule(Path.Log.thisModule())
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else:
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Path.Log.setLevel(Path.Log.Level.INFO, Path.Log.thisModule())
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class SpindleDirection(Enum):
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OFF = "OFF"
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CW = "M3"
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CCW = "M4"
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def generate(toolnumber, toollabel, spindlespeed=0, spindledirection=SpindleDirection.OFF):
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"""
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Generates Gcode for a simple toolchange.
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"""
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Path.Log.track(
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f"toolnumber:{toolnumber} toollabel: {toollabel} spindlespeed:{spindlespeed} spindledirection: {spindledirection}"
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)
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if spindledirection is not SpindleDirection.OFF and spindlespeed == 0:
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spindledirection = SpindleDirection.OFF
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# raise ValueError("Turning on spindle with zero speed is invalid")
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if spindlespeed < 0:
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raise ValueError("Spindle speed must be a positive value")
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commands = []
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commands.append(Path.Command(f"({toollabel})"))
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commands.append(Path.Command("M6", {"T": int(toolnumber)}))
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if spindledirection is SpindleDirection.OFF:
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return commands
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else:
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commands.append(Path.Command(spindledirection.value, {"S": spindlespeed}))
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Path.Log.track(commands)
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return commands
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def generateSubstitute(newTC, oldTC=None):
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"""
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The specific commands to emit, depend on the state of the machine.
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For example, the toolnumber may not change, only the spindle speed.
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This routine will generate a list of commands to substitute for a TC
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object to be handed to the postprocessor.
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It will contain only the commands needed
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"""
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if oldTC is None:
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return newTC.Path.Commands
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if newTC.ToolNumber != oldTC.ToolNumber: # Full toolchange
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return newTC.Path.Commands
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if (newTC.SpindleSpeed != oldTC.SpindleSpeed) or (newTC.SpindleDir != oldTC.SpindleDir):
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if newTC.SpindleDir == "Forward":
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sd = SpindleDirection.CW
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elif newTC.SpindleDir == "Reverse":
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sd = SpindleDirection.CCW
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else:
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sd = SpindleDirection.OFF
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return [Path.Command(sd.value, {"S": newTC.SpindleSpeed})]
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return []
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