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ef223fc71ce916ce93a73c355a5a997ed1db59d5
create/src/Mod/Path/PathScripts/PathSurface.py
Gabriel Wicke ef223fc71c Path: Use _optimizeLinearSegments utility in _planarSinglePassProcess 
Slightly clean up the code by separating linear segment optimization
from gcode generation. While the current optimization is not very
effective once there is any kind of meshing noise, having a single
method performing the optimization will make it easier to tweak
tolerances or strategies.
2020-06-05 18:21:24 -07:00

2148 lines
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Python
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# -*- coding: utf-8 -*-
# ***************************************************************************
# * *
# * Copyright (c) 2016 sliptonic <shopinthewoods@gmail.com> *
# * *
# * 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. *
# * *
# * This program 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 Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
from __future__ import print_function
__title__ = "Path Surface Operation"
__author__ = "sliptonic (Brad Collette)"
__url__ = "http://www.freecadweb.org"
__doc__ = "Class and implementation of 3D Surface operation."
__contributors__ = "russ4262 (Russell Johnson)"
import FreeCAD
from PySide import QtCore
# OCL must be installed
try:
import ocl
except ImportError:
msg = QtCore.QCoreApplication.translate("PathSurface",
"This operation requires OpenCamLib to be installed.")
FreeCAD.Console.PrintError(msg + "\n")
raise ImportError
# import sys
# sys.exit(msg)
import Path
import PathScripts.PathLog as PathLog
import PathScripts.PathUtils as PathUtils
import PathScripts.PathOp as PathOp
import PathScripts.PathSurfaceSupport as PathSurfaceSupport
import time
import math
# lazily loaded modules
from lazy_loader.lazy_loader import LazyLoader
Part = LazyLoader('Part', globals(), 'Part')
if FreeCAD.GuiUp:
import FreeCADGui
PathLog.setLevel(PathLog.Level.INFO, PathLog.thisModule())
# PathLog.trackModule(PathLog.thisModule())
# Qt translation handling
def translate(context, text, disambig=None):
return QtCore.QCoreApplication.translate(context, text, disambig)
class ObjectSurface(PathOp.ObjectOp):
'''Proxy object for Surfacing operation.'''
def opFeatures(self, obj):
'''opFeatures(obj) ... return all standard features'''
return PathOp.FeatureTool | PathOp.FeatureDepths \
| PathOp.FeatureHeights | PathOp.FeatureStepDown \
| PathOp.FeatureCoolant | PathOp.FeatureBaseFaces
def initOperation(self, obj):
'''initOperation(obj) ... Initialize the operation by
managing property creation and property editor status.'''
self.propertiesReady = False
self.initOpProperties(obj) # Initialize operation-specific properties
# For debugging
if PathLog.getLevel(PathLog.thisModule()) != 4:
obj.setEditorMode('ShowTempObjects', 2) # hide
if not hasattr(obj, 'DoNotSetDefaultValues'):
self.setEditorProperties(obj)
def initOpProperties(self, obj, warn=False):
'''initOpProperties(obj) ... create operation specific properties'''
self.addNewProps = list()
for (prtyp, nm, grp, tt) in self.opPropertyDefinitions():
if not hasattr(obj, nm):
obj.addProperty(prtyp, nm, grp, tt)
self.addNewProps.append(nm)
# Set enumeration lists for enumeration properties
if len(self.addNewProps) > 0:
ENUMS = self.opPropertyEnumerations()
for n in ENUMS:
if n in self.addNewProps:
setattr(obj, n, ENUMS[n])
if warn:
newPropMsg = translate('PathSurface', 'New property added to')
newPropMsg += ' "{}": {}'.format(obj.Label, self.addNewProps) + '. '
newPropMsg += translate('PathSurface', 'Check default value(s).')
FreeCAD.Console.PrintWarning(newPropMsg + '\n')
self.propertiesReady = True
def opPropertyDefinitions(self):
'''opPropertyDefinitions(obj) ... Store operation specific properties'''
return [
("App::PropertyBool", "ShowTempObjects", "Debug",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Show the temporary path construction objects when module is in DEBUG mode.")),
("App::PropertyDistance", "AngularDeflection", "Mesh Conversion",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Smaller values yield a finer, more accurate mesh. Smaller values increase processing time a lot.")),
("App::PropertyDistance", "LinearDeflection", "Mesh Conversion",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Smaller values yield a finer, more accurate mesh. Smaller values do not increase processing time much.")),
("App::PropertyFloat", "CutterTilt", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Stop index(angle) for rotational scan")),
("App::PropertyEnumeration", "DropCutterDir", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Dropcutter lines are created parallel to this axis.")),
("App::PropertyVectorDistance", "DropCutterExtraOffset", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Additional offset to the selected bounding box")),
("App::PropertyEnumeration", "RotationAxis", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "The model will be rotated around this axis.")),
("App::PropertyFloat", "StartIndex", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Start index(angle) for rotational scan")),
("App::PropertyFloat", "StopIndex", "Rotation",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Stop index(angle) for rotational scan")),
("App::PropertyEnumeration", "ScanType", "Surface",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Planar: Flat, 3D surface scan. Rotational: 4th-axis rotational scan.")),
("App::PropertyInteger", "AvoidLastX_Faces", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Avoid cutting the last 'N' faces in the Base Geometry list of selected faces.")),
("App::PropertyBool", "AvoidLastX_InternalFeatures", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Do not cut internal features on avoided faces.")),
("App::PropertyDistance", "BoundaryAdjustment", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Positive values push the cutter toward, or beyond, the boundary. Negative values retract the cutter away from the boundary.")),
("App::PropertyBool", "BoundaryEnforcement", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "If true, the cutter will remain inside the boundaries of the model or selected face(s).")),
("App::PropertyEnumeration", "HandleMultipleFeatures", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Choose how to process multiple Base Geometry features.")),
("App::PropertyDistance", "InternalFeaturesAdjustment", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Positive values push the cutter toward, or into, the feature. Negative values retract the cutter away from the feature.")),
("App::PropertyBool", "InternalFeaturesCut", "Selected Geometry Settings",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Ignore internal feature areas within a larger selected face.")),
("App::PropertyEnumeration", "BoundBox", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Select the overall boundary for the operation.")),
("App::PropertyEnumeration", "CutMode", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the direction for the cutting tool to engage the material: Climb (ClockWise) or Conventional (CounterClockWise)")),
("App::PropertyEnumeration", "CutPattern", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the geometric clearing pattern to use for the operation.")),
("App::PropertyFloat", "CutPatternAngle", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "The yaw angle used for certain clearing patterns")),
("App::PropertyBool", "CutPatternReversed", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Reverse the cut order of the stepover paths. For circular cut patterns, begin at the outside and work toward the center.")),
("App::PropertyDistance", "DepthOffset", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the Z-axis depth offset from the target surface.")),
("App::PropertyEnumeration", "LayerMode", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Complete the operation in a single pass at depth, or mulitiple passes to final depth.")),
("App::PropertyVectorDistance", "PatternCenterCustom", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the start point for the cut pattern.")),
("App::PropertyEnumeration", "PatternCenterAt", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Choose location of the center point for starting the cut pattern.")),
("App::PropertyEnumeration", "ProfileEdges", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Profile the edges of the selection.")),
("App::PropertyDistance", "SampleInterval", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the sampling resolution. Smaller values quickly increase processing time.")),
("App::PropertyFloat", "StepOver", "Clearing Options",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Set the stepover percentage, based on the tool's diameter.")),
("App::PropertyBool", "OptimizeLinearPaths", "Optimization",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Enable optimization of linear paths (co-linear points). Removes unnecessary co-linear points from G-Code output.")),
("App::PropertyBool", "OptimizeStepOverTransitions", "Optimization",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Enable separate optimization of transitions between, and breaks within, each step over path.")),
("App::PropertyBool", "CircularUseG2G3", "Optimization",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Convert co-planar arcs to G2/G3 gcode commands for `Circular` and `CircularZigZag` cut patterns.")),
("App::PropertyDistance", "GapThreshold", "Optimization",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Collinear and co-radial artifact gaps that are smaller than this threshold are closed in the path.")),
("App::PropertyString", "GapSizes", "Optimization",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Feedback: three smallest gaps identified in the path geometry.")),
("App::PropertyVectorDistance", "StartPoint", "Start Point",
QtCore.QT_TRANSLATE_NOOP("App::Property", "The custom start point for the path of this operation")),
("App::PropertyBool", "UseStartPoint", "Start Point",
QtCore.QT_TRANSLATE_NOOP("App::Property", "Make True, if specifying a Start Point"))
]
def opPropertyEnumerations(self):
# Enumeration lists for App::PropertyEnumeration properties
return {
'BoundBox': ['BaseBoundBox', 'Stock'],
'PatternCenterAt': ['CenterOfMass', 'CenterOfBoundBox', 'XminYmin', 'Custom'],
'CutMode': ['Conventional', 'Climb'],
'CutPattern': ['Circular', 'CircularZigZag', 'Line', 'Offset', 'Spiral', 'ZigZag'], # Additional goals ['Offset', 'ZigZagOffset', 'Grid', 'Triangle']
'DropCutterDir': ['X', 'Y'],
'HandleMultipleFeatures': ['Collectively', 'Individually'],
'LayerMode': ['Single-pass', 'Multi-pass'],
'ProfileEdges': ['None', 'Only', 'First', 'Last'],
'RotationAxis': ['X', 'Y'],
'ScanType': ['Planar', 'Rotational']
}
def opPropertyDefaults(self, obj, job):
'''opPropertyDefaults(obj, job) ... returns a dictionary of default values
for the operation's properties.'''
defaults = {
'OptimizeLinearPaths': True,
'InternalFeaturesCut': True,
'OptimizeStepOverTransitions': False,
'CircularUseG2G3': False,
'BoundaryEnforcement': True,
'UseStartPoint': False,
'AvoidLastX_InternalFeatures': True,
'CutPatternReversed': False,
'StartPoint': FreeCAD.Vector(0.0, 0.0, obj.ClearanceHeight.Value),
'ProfileEdges': 'None',
'LayerMode': 'Single-pass',
'ScanType': 'Planar',
'RotationAxis': 'X',
'CutMode': 'Conventional',
'CutPattern': 'Line',
'HandleMultipleFeatures': 'Collectively',
'PatternCenterAt': 'CenterOfMass',
'GapSizes': 'No gaps identified.',
'StepOver': 100.0,
'CutPatternAngle': 0.0,
'CutterTilt': 0.0,
'StartIndex': 0.0,
'StopIndex': 360.0,
'SampleInterval': 1.0,
'BoundaryAdjustment': 0.0,
'InternalFeaturesAdjustment': 0.0,
'AvoidLastX_Faces': 0,
'PatternCenterCustom': FreeCAD.Vector(0.0, 0.0, 0.0),
'GapThreshold': 0.005,
'AngularDeflection': 0.25, # AngularDeflection is unused
# Reasonable compromise between speed & precision
'LinearDeflection': 0.001,
# For debugging
'ShowTempObjects': False
}
warn = True
if hasattr(job, 'GeometryTolerance'):
if job.GeometryTolerance.Value != 0.0:
warn = False
# Tessellation precision dictates the offsets we need to add to
# avoid false collisions with the model mesh, so make sure we
# default to tessellating with greater precision than the target
# GeometryTolerance.
defaults['LinearDeflection'] = job.GeometryTolerance.Value / 4
if warn:
msg = translate('PathSurface',
'The GeometryTolerance for this Job is 0.0.')
msg += translate('PathSurface',
'Initializing LinearDeflection to 0.001 mm.')
FreeCAD.Console.PrintWarning(msg + '\n')
return defaults
def setEditorProperties(self, obj):
# Used to hide inputs in properties list
P0 = R2 = 0 # 0 = show
P2 = R0 = 2 # 2 = hide
if obj.ScanType == 'Planar':
# if obj.CutPattern in ['Line', 'ZigZag']:
if obj.CutPattern in ['Circular', 'CircularZigZag', 'Spiral']:
P0 = 2
P2 = 0
elif obj.CutPattern == 'Offset':
P0 = 2
elif obj.ScanType == 'Rotational':
R2 = P0 = P2 = 2
R0 = 0
obj.setEditorMode('DropCutterDir', R0)
obj.setEditorMode('DropCutterExtraOffset', R0)
obj.setEditorMode('RotationAxis', R0)
obj.setEditorMode('StartIndex', R0)
obj.setEditorMode('StopIndex', R0)
obj.setEditorMode('CutterTilt', R0)
obj.setEditorMode('CutPattern', R2)
obj.setEditorMode('CutPatternAngle', P0)
obj.setEditorMode('PatternCenterAt', P2)
obj.setEditorMode('PatternCenterCustom', P2)
def onChanged(self, obj, prop):
if hasattr(self, 'propertiesReady'):
if self.propertiesReady:
if prop in ['ScanType', 'CutPattern']:
self.setEditorProperties(obj)
def opOnDocumentRestored(self, obj):
self.propertiesReady = False
job = PathUtils.findParentJob(obj)
self.initOpProperties(obj, warn=True)
self.opApplyPropertyDefaults(obj, job, self.addNewProps)
mode = 2 if PathLog.getLevel(PathLog.thisModule()) != 4 else 0
obj.setEditorMode('ShowTempObjects', mode)
# Repopulate enumerations in case of changes
ENUMS = self.opPropertyEnumerations()
for n in ENUMS:
restore = False
if hasattr(obj, n):
val = obj.getPropertyByName(n)
restore = True
setattr(obj, n, ENUMS[n])
if restore:
setattr(obj, n, val)
self.setEditorProperties(obj)
def opApplyPropertyDefaults(self, obj, job, propList):
# Set standard property defaults
PROP_DFLTS = self.opPropertyDefaults(obj, job)
for n in PROP_DFLTS:
if n in propList:
prop = getattr(obj, n)
val = PROP_DFLTS[n]
setVal = False
if hasattr(prop, 'Value'):
if isinstance(val, int) or isinstance(val, float):
setVal = True
if setVal:
propVal = getattr(prop, 'Value')
setattr(prop, 'Value', val)
else:
setattr(obj, n, val)
def opSetDefaultValues(self, obj, job):
'''opSetDefaultValues(obj, job) ... initialize defaults'''
job = PathUtils.findParentJob(obj)
self.opApplyPropertyDefaults(obj, job, self.addNewProps)
# need to overwrite the default depth calculations for facing
d = None
if job:
if job.Stock:
d = PathUtils.guessDepths(job.Stock.Shape, None)
PathLog.debug("job.Stock exists")
else:
PathLog.debug("job.Stock NOT exist")
else:
PathLog.debug("job NOT exist")
if d is not None:
obj.OpFinalDepth.Value = d.final_depth
obj.OpStartDepth.Value = d.start_depth
else:
obj.OpFinalDepth.Value = -10
obj.OpStartDepth.Value = 10
PathLog.debug('Default OpFinalDepth: {}'.format(obj.OpFinalDepth.Value))
PathLog.debug('Defualt OpStartDepth: {}'.format(obj.OpStartDepth.Value))
def opApplyPropertyLimits(self, obj):
'''opApplyPropertyLimits(obj) ... Apply necessary limits to user input property values before performing main operation.'''
# Limit start index
if obj.StartIndex < 0.0:
obj.StartIndex = 0.0
if obj.StartIndex > 360.0:
obj.StartIndex = 360.0
# Limit stop index
if obj.StopIndex > 360.0:
obj.StopIndex = 360.0
if obj.StopIndex < 0.0:
obj.StopIndex = 0.0
# Limit cutter tilt
if obj.CutterTilt < -90.0:
obj.CutterTilt = -90.0
if obj.CutterTilt > 90.0:
obj.CutterTilt = 90.0
# Limit sample interval
if obj.SampleInterval.Value < 0.0001:
obj.SampleInterval.Value = 0.0001
PathLog.error(translate('PathSurface', 'Sample interval limits are 0.001 to 25.4 millimeters.'))
if obj.SampleInterval.Value > 25.4:
obj.SampleInterval.Value = 25.4
PathLog.error(translate('PathSurface', 'Sample interval limits are 0.001 to 25.4 millimeters.'))
# Limit cut pattern angle
if obj.CutPatternAngle < -360.0:
obj.CutPatternAngle = 0.0
PathLog.error(translate('PathSurface', 'Cut pattern angle limits are +-360 degrees.'))
if obj.CutPatternAngle >= 360.0:
obj.CutPatternAngle = 0.0
PathLog.error(translate('PathSurface', 'Cut pattern angle limits are +- 360 degrees.'))
# Limit StepOver to natural number percentage
if obj.StepOver > 100.0:
obj.StepOver = 100.0
if obj.StepOver < 1.0:
obj.StepOver = 1.0
# Limit AvoidLastX_Faces to zero and positive values
if obj.AvoidLastX_Faces < 0:
obj.AvoidLastX_Faces = 0
PathLog.error(translate('PathSurface', 'AvoidLastX_Faces: Only zero or positive values permitted.'))
if obj.AvoidLastX_Faces > 100:
obj.AvoidLastX_Faces = 100
PathLog.error(translate('PathSurface', 'AvoidLastX_Faces: Avoid last X faces count limited to 100.'))
def opUpdateDepths(self, obj):
if hasattr(obj, 'Base') and obj.Base:
base, sublist = obj.Base[0]
fbb = base.Shape.getElement(sublist[0]).BoundBox
zmin = fbb.ZMax
for base, sublist in obj.Base:
for sub in sublist:
try:
fbb = base.Shape.getElement(sub).BoundBox
zmin = min(zmin, fbb.ZMin)
except Part.OCCError as e:
PathLog.error(e)
obj.OpFinalDepth = zmin
def opExecute(self, obj):
'''opExecute(obj) ... process surface operation'''
PathLog.track()
self.modelSTLs = list()
self.safeSTLs = list()
self.modelTypes = list()
self.boundBoxes = list()
self.profileShapes = list()
self.collectiveShapes = list()
self.individualShapes = list()
self.avoidShapes = list()
self.tempGroup = None
self.CutClimb = False
self.closedGap = False
self.tmpCOM = None
self.gaps = [0.1, 0.2, 0.3]
self.cancelOperation = False
CMDS = list()
modelVisibility = list()
FCAD = FreeCAD.ActiveDocument
try:
dotIdx = __name__.index('.') + 1
except Exception:
dotIdx = 0
self.module = __name__[dotIdx:]
# Set debugging behavior
self.showDebugObjects = False # Set to true if you want a visual DocObjects created for some path construction objects
self.showDebugObjects = obj.ShowTempObjects
deleteTempsFlag = True # Set to False for debugging
if PathLog.getLevel(PathLog.thisModule()) == 4:
deleteTempsFlag = False
else:
self.showDebugObjects = False
# mark beginning of operation and identify parent Job
startTime = time.time()
# Identify parent Job
JOB = PathUtils.findParentJob(obj)
self.JOB = JOB
if JOB is None:
PathLog.error(translate('PathSurface', "No JOB"))
return
self.stockZMin = JOB.Stock.Shape.BoundBox.ZMin
# set cut mode; reverse as needed
if obj.CutMode == 'Climb':
self.CutClimb = True
if obj.CutPatternReversed is True:
if self.CutClimb is True:
self.CutClimb = False
else:
self.CutClimb = True
# Begin GCode for operation with basic information
# ... and move cutter to clearance height and startpoint
output = ''
if obj.Comment != '':
self.commandlist.append(Path.Command('N ({})'.format(str(obj.Comment)), {}))
self.commandlist.append(Path.Command('N ({})'.format(obj.Label), {}))
self.commandlist.append(Path.Command('N (Tool type: {})'.format(str(obj.ToolController.Tool.ToolType)), {}))
self.commandlist.append(Path.Command('N (Compensated Tool Path. Diameter: {})'.format(str(obj.ToolController.Tool.Diameter)), {}))
self.commandlist.append(Path.Command('N (Sample interval: {})'.format(str(obj.SampleInterval.Value)), {}))
self.commandlist.append(Path.Command('N (Step over %: {})'.format(str(obj.StepOver)), {}))
self.commandlist.append(Path.Command('N ({})'.format(output), {}))
self.commandlist.append(Path.Command('G0', {'Z': obj.ClearanceHeight.Value, 'F': self.vertRapid}))
if obj.UseStartPoint is True:
self.commandlist.append(Path.Command('G0', {'X': obj.StartPoint.x, 'Y': obj.StartPoint.y, 'F': self.horizRapid}))
# Instantiate additional class operation variables
self.resetOpVariables()
# Impose property limits
self.opApplyPropertyLimits(obj)
# Create temporary group for temporary objects, removing existing
tempGroupName = 'tempPathSurfaceGroup'
if FCAD.getObject(tempGroupName):
for to in FCAD.getObject(tempGroupName).Group:
FCAD.removeObject(to.Name)
FCAD.removeObject(tempGroupName) # remove temp directory if already exists
if FCAD.getObject(tempGroupName + '001'):
for to in FCAD.getObject(tempGroupName + '001').Group:
FCAD.removeObject(to.Name)
FCAD.removeObject(tempGroupName + '001') # remove temp directory if already exists
tempGroup = FCAD.addObject('App::DocumentObjectGroup', tempGroupName)
tempGroupName = tempGroup.Name
self.tempGroup = tempGroup
tempGroup.purgeTouched()
# Add temp object to temp group folder with following code:
# ... self.tempGroup.addObject(OBJ)
# Setup cutter for OCL and cutout value for operation - based on tool controller properties
self.cutter = self.setOclCutter(obj)
if self.cutter is False:
PathLog.error(translate('PathSurface', "Canceling 3D Surface operation. Error creating OCL cutter."))
return
self.toolDiam = self.cutter.getDiameter()
self.radius = self.toolDiam / 2.0
self.cutOut = (self.toolDiam * (float(obj.StepOver) / 100.0))
self.gaps = [self.toolDiam, self.toolDiam, self.toolDiam]
# Get height offset values for later use
self.SafeHeightOffset = JOB.SetupSheet.SafeHeightOffset.Value
self.ClearHeightOffset = JOB.SetupSheet.ClearanceHeightOffset.Value
# Calculate default depthparams for operation
self.depthParams = PathUtils.depth_params(obj.ClearanceHeight.Value, obj.SafeHeight.Value, obj.StartDepth.Value, obj.StepDown.Value, 0.0, obj.FinalDepth.Value)
self.midDep = (obj.StartDepth.Value + obj.FinalDepth.Value) / 2.0
# Save model visibilities for restoration
if FreeCAD.GuiUp:
for m in range(0, len(JOB.Model.Group)):
mNm = JOB.Model.Group[m].Name
modelVisibility.append(FreeCADGui.ActiveDocument.getObject(mNm).Visibility)
# Setup STL, model type, and bound box containers for each model in Job
for m in range(0, len(JOB.Model.Group)):
M = JOB.Model.Group[m]
self.modelSTLs.append(False)
self.safeSTLs.append(False)
self.profileShapes.append(False)
# Set bound box
if obj.BoundBox == 'BaseBoundBox':
if M.TypeId.startswith('Mesh'):
self.modelTypes.append('M') # Mesh
self.boundBoxes.append(M.Mesh.BoundBox)
else:
self.modelTypes.append('S') # Solid
self.boundBoxes.append(M.Shape.BoundBox)
elif obj.BoundBox == 'Stock':
self.modelTypes.append('S') # Solid
self.boundBoxes.append(JOB.Stock.Shape.BoundBox)
# ###### MAIN COMMANDS FOR OPERATION ######
# Begin processing obj.Base data and creating GCode
PSF = PathSurfaceSupport.ProcessSelectedFaces(JOB, obj)
PSF.setShowDebugObjects(tempGroup, self.showDebugObjects)
PSF.radius = self.radius
PSF.depthParams = self.depthParams
pPM = PSF.preProcessModel(self.module)
# Process selected faces, if available
if pPM:
self.cancelOperation = False
(FACES, VOIDS) = pPM
self.modelSTLs = PSF.modelSTLs
self.profileShapes = PSF.profileShapes
for m in range(0, len(JOB.Model.Group)):
# Create OCL.stl model objects
PathSurfaceSupport._prepareModelSTLs(self, JOB, obj, m, ocl)
Mdl = JOB.Model.Group[m]
if FACES[m]:
PathLog.debug('Working on Model.Group[{}]: {}'.format(m, Mdl.Label))
if m > 0:
# Raise to clearance between models
CMDS.append(Path.Command('N (Transition to base: {}.)'.format(Mdl.Label)))
CMDS.append(Path.Command('G0', {'Z': obj.ClearanceHeight.Value, 'F': self.vertRapid}))
# make stock-model-voidShapes STL model for avoidance detection on transitions
PathSurfaceSupport._makeSafeSTL(self, JOB, obj, m, FACES[m], VOIDS[m], ocl)
# Process model/faces - OCL objects must be ready
CMDS.extend(self._processCutAreas(JOB, obj, m, FACES[m], VOIDS[m]))
else:
PathLog.debug('No data for model base: {}'.format(JOB.Model.Group[m].Label))
# Save gcode produced
self.commandlist.extend(CMDS)
# ###### CLOSING COMMANDS FOR OPERATION ######
# Delete temporary objects
# Restore model visibilities for restoration
if FreeCAD.GuiUp:
FreeCADGui.ActiveDocument.getObject(tempGroupName).Visibility = False
for m in range(0, len(JOB.Model.Group)):
M = JOB.Model.Group[m]
M.Visibility = modelVisibility[m]
if deleteTempsFlag is True:
for to in tempGroup.Group:
if hasattr(to, 'Group'):
for go in to.Group:
FCAD.removeObject(go.Name)
FCAD.removeObject(to.Name)
FCAD.removeObject(tempGroupName)
else:
if len(tempGroup.Group) == 0:
FCAD.removeObject(tempGroupName)
else:
tempGroup.purgeTouched()
# Provide user feedback for gap sizes
gaps = list()
for g in self.gaps:
if g != self.toolDiam:
gaps.append(g)
if len(gaps) > 0:
obj.GapSizes = '{} mm'.format(gaps)
else:
if self.closedGap is True:
obj.GapSizes = 'Closed gaps < Gap Threshold.'
else:
obj.GapSizes = 'No gaps identified.'
# clean up class variables
self.resetOpVariables()
self.deleteOpVariables()
self.modelSTLs = None
self.safeSTLs = None
self.modelTypes = None
self.boundBoxes = None
self.gaps = None
self.closedGap = None
self.SafeHeightOffset = None
self.ClearHeightOffset = None
self.depthParams = None
self.midDep = None
del self.modelSTLs
del self.safeSTLs
del self.modelTypes
del self.boundBoxes
del self.gaps
del self.closedGap
del self.SafeHeightOffset
del self.ClearHeightOffset
del self.depthParams
del self.midDep
execTime = time.time() - startTime
if execTime > 60.0:
tMins = math.floor(execTime / 60.0)
tSecs = execTime - (tMins * 60.0)
exTime = str(tMins) + ' min. ' + str(round(tSecs, 5)) + ' sec.'
else:
exTime = str(round(execTime, 5)) + ' sec.'
msg = translate('PathSurface', 'operation time is')
FreeCAD.Console.PrintMessage('3D Surface ' + msg + ' {}\n'.format(exTime))
if self.cancelOperation:
FreeCAD.ActiveDocument.openTransaction(translate("PathSurface", "Canceled 3D Surface operation."))
FreeCAD.ActiveDocument.removeObject(obj.Name)
FreeCAD.ActiveDocument.commitTransaction()
return True
# Methods for constructing the cut area and creating path geometry
def _processCutAreas(self, JOB, obj, mdlIdx, FCS, VDS):
'''_processCutAreas(JOB, obj, mdlIdx, FCS, VDS)...
This method applies any avoided faces or regions to the selected faces.
It then calls the correct scan method depending on the ScanType property.'''
PathLog.debug('_processCutAreas()')
final = list()
# Process faces Collectively or Individually
if obj.HandleMultipleFeatures == 'Collectively':
if FCS is True:
COMP = False
else:
ADD = Part.makeCompound(FCS)
if VDS is not False:
DEL = Part.makeCompound(VDS)
COMP = ADD.cut(DEL)
else:
COMP = ADD
if obj.ScanType == 'Planar':
final.extend(self._processPlanarOp(JOB, obj, mdlIdx, COMP, 0))
elif obj.ScanType == 'Rotational':
final.extend(self._processRotationalOp(JOB, obj, mdlIdx, COMP))
elif obj.HandleMultipleFeatures == 'Individually':
for fsi in range(0, len(FCS)):
fShp = FCS[fsi]
# self.deleteOpVariables(all=False)
self.resetOpVariables(all=False)
if fShp is True:
COMP = False
else:
ADD = Part.makeCompound([fShp])
if VDS is not False:
DEL = Part.makeCompound(VDS)
COMP = ADD.cut(DEL)
else:
COMP = ADD
if obj.ScanType == 'Planar':
final.extend(self._processPlanarOp(JOB, obj, mdlIdx, COMP, fsi))
elif obj.ScanType == 'Rotational':
final.extend(self._processRotationalOp(JOB, obj, mdlIdx, COMP))
COMP = None
# Eif
return final
def _processPlanarOp(self, JOB, obj, mdlIdx, cmpdShp, fsi):
'''_processPlanarOp(JOB, obj, mdlIdx, cmpdShp)...
This method compiles the main components for the procedural portion of a planar operation (non-rotational).
It creates the OCL PathDropCutter objects: model and safeTravel.
It makes the necessary facial geometries for the actual cut area.
It calls the correct Single or Multi-pass method as needed.
It returns the gcode for the operation. '''
PathLog.debug('_processPlanarOp()')
final = list()
SCANDATA = list()
def getTransition(two):
first = two[0][0][0] # [step][item][point]
safe = obj.SafeHeight.Value + 0.1
trans = [[FreeCAD.Vector(first.x, first.y, safe)]]
return trans
# Compute number and size of stepdowns, and final depth
if obj.LayerMode == 'Single-pass':
depthparams = [obj.FinalDepth.Value]
elif obj.LayerMode == 'Multi-pass':
depthparams = [i for i in self.depthParams]
lenDP = len(depthparams)
# Prepare PathDropCutter objects with STL data
pdc = self._planarGetPDC(self.modelSTLs[mdlIdx], depthparams[lenDP - 1], obj.SampleInterval.Value, self.cutter)
safePDC = self._planarGetPDC(self.safeSTLs[mdlIdx], depthparams[lenDP - 1], obj.SampleInterval.Value, self.cutter)
profScan = list()
if obj.ProfileEdges != 'None':
prflShp = self.profileShapes[mdlIdx][fsi]
if prflShp is False:
msg = translate('PathSurface', 'No profile geometry shape returned.')
PathLog.error(msg)
return list()
self.showDebugObject(prflShp, 'NewProfileShape')
# get offset path geometry and perform OCL scan with that geometry
pathOffsetGeom = self._offsetFacesToPointData(obj, prflShp)
if pathOffsetGeom is False:
msg = translate('PathSurface', 'No profile path geometry returned.')
PathLog.error(msg)
return list()
profScan = [self._planarPerformOclScan(obj, pdc, pathOffsetGeom, True)]
geoScan = list()
if obj.ProfileEdges != 'Only':
self.showDebugObject(cmpdShp, 'CutArea')
# get internal path geometry and perform OCL scan with that geometry
PGG = PathSurfaceSupport.PathGeometryGenerator(obj, cmpdShp, obj.CutPattern)
if self.showDebugObjects:
PGG.setDebugObjectsGroup(self.tempGroup)
self.tmpCOM = PGG.getCenterOfPattern()
pathGeom = PGG.generatePathGeometry()
if pathGeom is False:
msg = translate('PathSurface', 'No clearing shape returned.')
PathLog.error(msg)
return list()
if obj.CutPattern == 'Offset':
useGeom = self._offsetFacesToPointData(obj, pathGeom, profile=False)
if useGeom is False:
msg = translate('PathSurface', 'No clearing path geometry returned.')
PathLog.error(msg)
return list()
geoScan = [self._planarPerformOclScan(obj, pdc, useGeom, True)]
else:
geoScan = self._planarPerformOclScan(obj, pdc, pathGeom, False)
if obj.ProfileEdges == 'Only': # ['None', 'Only', 'First', 'Last']
SCANDATA.extend(profScan)
if obj.ProfileEdges == 'None':
SCANDATA.extend(geoScan)
if obj.ProfileEdges == 'First':
profScan.append(getTransition(geoScan))
SCANDATA.extend(profScan)
SCANDATA.extend(geoScan)
if obj.ProfileEdges == 'Last':
SCANDATA.extend(geoScan)
SCANDATA.extend(profScan)
if len(SCANDATA) == 0:
msg = translate('PathSuface', 'No scan data to convert to Gcode.')
PathLog.error(msg)
return list()
# Apply depth offset
if obj.DepthOffset.Value != 0.0:
self._planarApplyDepthOffset(SCANDATA, obj.DepthOffset.Value)
# If cut pattern is `Circular`, there are zero(almost zero) straight lines to optimize
# Store initial `OptimizeLinearPaths` value for later restoration
self.preOLP = obj.OptimizeLinearPaths
if obj.CutPattern in ['Circular', 'CircularZigZag']:
obj.OptimizeLinearPaths = False
# Process OCL scan data
if obj.LayerMode == 'Single-pass':
final.extend(self._planarDropCutSingle(JOB, obj, pdc, safePDC, depthparams, SCANDATA))
elif obj.LayerMode == 'Multi-pass':
final.extend(self._planarDropCutMulti(JOB, obj, pdc, safePDC, depthparams, SCANDATA))
# If cut pattern is `Circular`, restore initial OLP value
if obj.CutPattern in ['Circular', 'CircularZigZag']:
obj.OptimizeLinearPaths = self.preOLP
# Raise to safe height between individual faces.
if obj.HandleMultipleFeatures == 'Individually':
final.insert(0, Path.Command('G0', {'Z': obj.SafeHeight.Value, 'F': self.vertRapid}))
return final
def _offsetFacesToPointData(self, obj, subShp, profile=True):
PathLog.debug('_offsetFacesToPointData()')
offsetLists = list()
dist = obj.SampleInterval.Value / 5.0
# defl = obj.SampleInterval.Value / 5.0
if not profile:
# Reverse order of wires in each face - inside to outside
for w in range(len(subShp.Wires) - 1, -1, -1):
W = subShp.Wires[w]
PNTS = W.discretize(Distance=dist)
# PNTS = W.discretize(Deflection=defl)
if self.CutClimb:
PNTS.reverse()
offsetLists.append(PNTS)
else:
# Reference https://forum.freecadweb.org/viewtopic.php?t=28861#p234939
for fc in subShp.Faces:
# Reverse order of wires in each face - inside to outside
for w in range(len(fc.Wires) - 1, -1, -1):
W = fc.Wires[w]
PNTS = W.discretize(Distance=dist)
# PNTS = W.discretize(Deflection=defl)
if self.CutClimb:
PNTS.reverse()
offsetLists.append(PNTS)
return offsetLists
def _planarPerformOclScan(self, obj, pdc, pathGeom, offsetPoints=False):
'''_planarPerformOclScan(obj, pdc, pathGeom, offsetPoints=False)...
Switching function for calling the appropriate path-geometry to OCL points conversion function
for the various cut patterns.'''
PathLog.debug('_planarPerformOclScan()')
SCANS = list()
if offsetPoints or obj.CutPattern == 'Offset':
PNTSET = PathSurfaceSupport.pathGeomToOffsetPointSet(obj, pathGeom)
for D in PNTSET:
stpOvr = list()
ofst = list()
for I in D:
if I == 'BRK':
stpOvr.append(ofst)
stpOvr.append(I)
ofst = list()
else:
# D format is ((p1, p2), (p3, p4))
(A, B) = I
ofst.extend(self._planarDropCutScan(pdc, A, B))
if len(ofst) > 0:
stpOvr.append(ofst)
SCANS.extend(stpOvr)
elif obj.CutPattern in ['Line', 'Spiral', 'ZigZag']:
stpOvr = list()
if obj.CutPattern == 'Line':
PNTSET = PathSurfaceSupport.pathGeomToLinesPointSet(obj, pathGeom, self.CutClimb, self.toolDiam, self.closedGap, self.gaps)
elif obj.CutPattern == 'ZigZag':
PNTSET = PathSurfaceSupport.pathGeomToZigzagPointSet(obj, pathGeom, self.CutClimb, self.toolDiam, self.closedGap, self.gaps)
elif obj.CutPattern == 'Spiral':
PNTSET = PathSurfaceSupport.pathGeomToSpiralPointSet(obj, pathGeom)
for STEP in PNTSET:
for LN in STEP:
if LN == 'BRK':
stpOvr.append(LN)
else:
# D format is ((p1, p2), (p3, p4))
(A, B) = LN
stpOvr.append(self._planarDropCutScan(pdc, A, B))
SCANS.append(stpOvr)
stpOvr = list()
elif obj.CutPattern in ['Circular', 'CircularZigZag']:
# PNTSET is list, by stepover.
# Each stepover is a list containing arc/loop descriptions, (sp, ep, cp)
PNTSET = PathSurfaceSupport.pathGeomToCircularPointSet(obj, pathGeom, self.CutClimb, self.toolDiam, self.closedGap, self.gaps, self.tmpCOM)
for so in range(0, len(PNTSET)):
stpOvr = list()
erFlg = False
(aTyp, dirFlg, ARCS) = PNTSET[so]
if dirFlg == 1: # 1
cMode = True
else:
cMode = False
for a in range(0, len(ARCS)):
Arc = ARCS[a]
if Arc == 'BRK':
stpOvr.append('BRK')
else:
scan = self._planarCircularDropCutScan(pdc, Arc, cMode)
if scan is False:
erFlg = True
else:
if aTyp == 'L':
scan.append(FreeCAD.Vector(scan[0].x, scan[0].y, scan[0].z))
stpOvr.append(scan)
if erFlg is False:
SCANS.append(stpOvr)
# Eif
return SCANS
def _planarDropCutScan(self, pdc, A, B):
#PNTS = list()
(x1, y1) = A
(x2, y2) = B
path = ocl.Path() # create an empty path object
p1 = ocl.Point(x1, y1, 0) # start-point of line
p2 = ocl.Point(x2, y2, 0) # end-point of line
lo = ocl.Line(p1, p2) # line-object
path.append(lo) # add the line to the path
pdc.setPath(path)
pdc.run() # run dropcutter algorithm on path
CLP = pdc.getCLPoints()
PNTS = [FreeCAD.Vector(p.x, p.y, p.z) for p in CLP]
return PNTS # pdc.getCLPoints()
def _planarCircularDropCutScan(self, pdc, Arc, cMode):
PNTS = list()
path = ocl.Path() # create an empty path object
(sp, ep, cp) = Arc
# process list of segment tuples (vect, vect)
p1 = ocl.Point(sp[0], sp[1], 0) # start point of arc
p2 = ocl.Point(ep[0], ep[1], 0) # end point of arc
C = ocl.Point(cp[0], cp[1], 0) # center point of arc
ao = ocl.Arc(p1, p2, C, cMode) # arc object
path.append(ao) # add the arc to the path
pdc.setPath(path)
pdc.run() # run dropcutter algorithm on path
CLP = pdc.getCLPoints()
# Convert OCL object data to FreeCAD vectors
return [FreeCAD.Vector(p.x, p.y, p.z) for p in CLP]
# Main planar scan functions
def _planarDropCutSingle(self, JOB, obj, pdc, safePDC, depthparams, SCANDATA):
PathLog.debug('_planarDropCutSingle()')
GCODE = [Path.Command('N (Beginning of Single-pass layer.)', {})]
tolrnc = JOB.GeometryTolerance.Value
lenSCANDATA = len(SCANDATA)
gDIR = ['G3', 'G2']
if self.CutClimb:
gDIR = ['G2', 'G3']
# Set `ProfileEdges` specific trigger indexes
peIdx = lenSCANDATA # off by default
if obj.ProfileEdges == 'Only':
peIdx = -1
elif obj.ProfileEdges == 'First':
peIdx = 0
elif obj.ProfileEdges == 'Last':
peIdx = lenSCANDATA - 1
# Send cutter to x,y position of first point on first line
first = SCANDATA[0][0][0] # [step][item][point]
GCODE.append(Path.Command('G0', {'X': first.x, 'Y': first.y, 'F': self.horizRapid}))
# Cycle through step-over sections (line segments or arcs)
odd = True
lstStpEnd = None
for so in range(0, lenSCANDATA):
cmds = list()
PRTS = SCANDATA[so]
lenPRTS = len(PRTS)
first = PRTS[0][0] # first point of arc/line stepover group
start = PRTS[0][0] # will change with each line/arc segment
last = None
cmds.append(Path.Command('N (Begin step {}.)'.format(so), {}))
if so > 0:
if obj.CutPattern == 'CircularZigZag':
if odd:
odd = False
else:
odd = True
cmds.extend(
self._stepTransitionCmds(obj, lstStpEnd, first, safePDC,
tolrnc))
# Override default `OptimizeLinearPaths` behavior to allow
# `ProfileEdges` optimization
if so == peIdx or peIdx == -1:
obj.OptimizeLinearPaths = self.preOLP
# Cycle through current step-over parts
for i in range(0, lenPRTS):
prt = PRTS[i]
lenPrt = len(prt)
if prt == 'BRK':
nxtStart = PRTS[i + 1][0]
cmds.append(Path.Command('N (Break)', {}))
cmds.extend(
self._stepTransitionCmds(obj, last, nxtStart, safePDC,
tolrnc))
else:
cmds.append(Path.Command('N (part {}.)'.format(i + 1), {}))
start = prt[0]
last = prt[lenPrt - 1]
if so == peIdx or peIdx == -1:
cmds.extend(self._planarSinglepassProcess(obj, prt))
elif obj.CutPattern in ['Circular', 'CircularZigZag'] and obj.CircularUseG2G3 is True and lenPrt > 2:
(rtnVal, gcode) = self._arcsToG2G3(prt, lenPrt, odd, gDIR, tolrnc)
if rtnVal:
cmds.extend(gcode)
else:
cmds.extend(self._planarSinglepassProcess(obj, prt))
else:
cmds.extend(self._planarSinglepassProcess(obj, prt))
cmds.append(Path.Command('N (End of step {}.)'.format(so), {}))
GCODE.extend(cmds) # save line commands
lstStpEnd = last
# Return `OptimizeLinearPaths` to disabled
if so == peIdx or peIdx == -1:
if obj.CutPattern in ['Circular', 'CircularZigZag']:
obj.OptimizeLinearPaths = False
# Efor
return GCODE
def _planarSinglepassProcess(self, obj, points):
if obj.OptimizeLinearPaths:
points = self._optimizeLinearSegments(points)
# Begin processing ocl points list into gcode
commands = []
for pnt in points:
commands.append(
Path.Command('G1', {
'X': pnt.x,
'Y': pnt.y,
'Z': pnt.z,
'F': self.horizFeed
}))
return commands
def _planarDropCutMulti(self, JOB, obj, pdc, safePDC, depthparams, SCANDATA):
GCODE = [Path.Command('N (Beginning of Multi-pass layers.)', {})]
tolrnc = JOB.GeometryTolerance.Value
lenDP = len(depthparams)
prevDepth = depthparams[0]
lenSCANDATA = len(SCANDATA)
gDIR = ['G3', 'G2']
if self.CutClimb:
gDIR = ['G2', 'G3']
# Set `ProfileEdges` specific trigger indexes
peIdx = lenSCANDATA # off by default
if obj.ProfileEdges == 'Only':
peIdx = -1
elif obj.ProfileEdges == 'First':
peIdx = 0
elif obj.ProfileEdges == 'Last':
peIdx = lenSCANDATA - 1
# Process each layer in depthparams
prvLyrFirst = None
prvLyrLast = None
lastPrvStpLast = None
for lyr in range(0, lenDP):
odd = True # ZigZag directional switch
lyrHasCmds = False
actvSteps = 0
LYR = list()
prvStpFirst = None
if lyr > 0:
if prvStpLast is not None:
lastPrvStpLast = prvStpLast
prvStpLast = None
lyrDep = depthparams[lyr]
PathLog.debug('Multi-pass lyrDep: {}'.format(round(lyrDep, 4)))
# Cycle through step-over sections (line segments or arcs)
for so in range(0, len(SCANDATA)):
SO = SCANDATA[so]
lenSO = len(SO)
# Pre-process step-over parts for layer depth and holds
ADJPRTS = list()
LMAX = list()
soHasPnts = False
brkFlg = False
for i in range(0, lenSO):
prt = SO[i]
lenPrt = len(prt)
if prt == 'BRK':
if brkFlg:
ADJPRTS.append(prt)
LMAX.append(prt)
brkFlg = False
else:
(PTS, lMax) = self._planarMultipassPreProcess(obj, prt, prevDepth, lyrDep)
if len(PTS) > 0:
ADJPRTS.append(PTS)
soHasPnts = True
brkFlg = True
LMAX.append(lMax)
# Efor
lenAdjPrts = len(ADJPRTS)
# Process existing parts within current step over
prtsHasCmds = False
stepHasCmds = False
prtsCmds = list()
stpOvrCmds = list()
transCmds = list()
if soHasPnts is True:
first = ADJPRTS[0][0] # first point of arc/line stepover group
last = None
# Manage step over transition and CircularZigZag direction
if so > 0:
# Control ZigZag direction
if obj.CutPattern == 'CircularZigZag':
if odd is True:
odd = False
else:
odd = True
# Control step over transition
if prvStpLast is None:
prvStpLast = lastPrvStpLast
transCmds.extend(
self._stepTransitionCmds(obj, prvStpLast, first,
safePDC, tolrnc))
# Override default `OptimizeLinearPaths` behavior to allow `ProfileEdges` optimization
if so == peIdx or peIdx == -1:
obj.OptimizeLinearPaths = self.preOLP
# Cycle through current step-over parts
for i in range(0, lenAdjPrts):
prt = ADJPRTS[i]
lenPrt = len(prt)
if prt == 'BRK' and prtsHasCmds is True:
nxtStart = ADJPRTS[i + 1][0]
prtsCmds.append(Path.Command('N (--Break)', {}))
prtsCmds.extend(
self._stepTransitionCmds(
obj, last, nxtStart, safePDC, tolrnc))
else:
segCmds = False
prtsCmds.append(Path.Command('N (part {})'.format(i + 1), {}))
last = prt[lenPrt - 1]
if so == peIdx or peIdx == -1:
segCmds = self._planarSinglepassProcess(obj, prt)
elif obj.CutPattern in ['Circular', 'CircularZigZag'] and obj.CircularUseG2G3 is True and lenPrt > 2:
(rtnVal, gcode) = self._arcsToG2G3(prt, lenPrt, odd, gDIR, tolrnc)
if rtnVal is True:
segCmds = gcode
else:
segCmds = self._planarSinglepassProcess(obj, prt)
else:
segCmds = self._planarSinglepassProcess(obj, prt)
if segCmds is not False:
prtsCmds.extend(segCmds)
prtsHasCmds = True
prvStpLast = last
# Eif
# Efor
# Eif
# Return `OptimizeLinearPaths` to disabled
if so == peIdx or peIdx == -1:
if obj.CutPattern in ['Circular', 'CircularZigZag']:
obj.OptimizeLinearPaths = False
# Compile step over(prts) commands
if prtsHasCmds is True:
stepHasCmds = True
actvSteps += 1
prvStpFirst = first
stpOvrCmds.extend(transCmds)
stpOvrCmds.append(Path.Command('N (Begin step {}.)'.format(so), {}))
stpOvrCmds.append(Path.Command('G0', {'X': first.x, 'Y': first.y, 'F': self.horizRapid}))
stpOvrCmds.extend(prtsCmds)
stpOvrCmds.append(Path.Command('N (End of step {}.)'.format(so), {}))
# Layer transition at first active step over in current layer
if actvSteps == 1:
prvLyrFirst = first
LYR.append(Path.Command('N (Layer {} begins)'.format(lyr), {}))
if lyr > 0:
LYR.append(Path.Command('N (Layer transition)', {}))
LYR.append(Path.Command('G0', {'Z': obj.SafeHeight.Value, 'F': self.vertRapid}))
LYR.append(Path.Command('G0', {'X': first.x, 'Y': first.y, 'F': self.horizRapid}))
if stepHasCmds is True:
lyrHasCmds = True
LYR.extend(stpOvrCmds)
# Eif
# Close layer, saving commands, if any
if lyrHasCmds is True:
prvLyrLast = last
GCODE.extend(LYR) # save line commands
GCODE.append(Path.Command('N (End of layer {})'.format(lyr), {}))
# Set previous depth
prevDepth = lyrDep
# Efor
PathLog.debug('Multi-pass op has {} layers (step downs).'.format(lyr + 1))
return GCODE
def _planarMultipassPreProcess(self, obj, LN, prvDep, layDep):
ALL = list()
PTS = list()
optLinTrans = obj.OptimizeStepOverTransitions
safe = math.ceil(obj.SafeHeight.Value)
if optLinTrans is True:
for P in LN:
ALL.append(P)
# Handle layer depth AND hold points
if P.z <= layDep:
PTS.append(FreeCAD.Vector(P.x, P.y, layDep))
elif P.z > prvDep:
PTS.append(FreeCAD.Vector(P.x, P.y, safe))
else:
PTS.append(FreeCAD.Vector(P.x, P.y, P.z))
# Efor
else:
for P in LN:
ALL.append(P)
# Handle layer depth only
if P.z <= layDep:
PTS.append(FreeCAD.Vector(P.x, P.y, layDep))
else:
PTS.append(FreeCAD.Vector(P.x, P.y, P.z))
# Efor
if optLinTrans is True:
# Remove leading and trailing Hold Points
popList = list()
for i in range(0, len(PTS)): # identify leading string
if PTS[i].z == safe:
popList.append(i)
else:
break
popList.sort(reverse=True)
for p in popList: # Remove hold points
PTS.pop(p)
ALL.pop(p)
popList = list()
for i in range(len(PTS) - 1, -1, -1): # identify trailing string
if PTS[i].z == safe:
popList.append(i)
else:
break
popList.sort(reverse=True)
for p in popList: # Remove hold points
PTS.pop(p)
ALL.pop(p)
# Determine max Z height for remaining points on line
lMax = obj.FinalDepth.Value
if len(ALL) > 0:
lMax = ALL[0].z
for P in ALL:
if P.z > lMax:
lMax = P.z
return (PTS, lMax)
def _planarMultipassProcess(self, obj, PNTS, lMax):
output = list()
optimize = obj.OptimizeLinearPaths
safe = math.ceil(obj.SafeHeight.Value)
lenPNTS = len(PNTS)
prcs = True
onHold = False
onLine = False
clrScnLn = lMax + 2.0
# Initialize first three points
nxt = None
pnt = PNTS[0]
prev = FreeCAD.Vector(-442064564.6, 258539656553.27, 3538553425.847)
# Add temp end point
PNTS.append(FreeCAD.Vector(-4895747464.6, -25855763553.2, 35865763425))
# Begin processing ocl points list into gcode
for i in range(0, lenPNTS):
prcs = True
nxt = PNTS[i + 1]
if pnt.z == safe:
prcs = False
if onHold is False:
onHold = True
output.append( Path.Command('N (Start hold)', {}) )
output.append( Path.Command('G0', {'Z': clrScnLn, 'F': self.vertRapid}) )
else:
if onHold is True:
onHold = False
output.append( Path.Command('N (End hold)', {}) )
output.append( Path.Command('G0', {'X': pnt.x, 'Y': pnt.y, 'F': self.horizRapid}) )
# Process point
if prcs is True:
if optimize is True:
# iPOL = prev.isOnLineSegment(nxt, pnt)
iPOL = pnt.isOnLineSegment(prev, nxt)
if iPOL is True:
onLine = True
else:
onLine = False
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'Z': pnt.z, 'F': self.horizFeed}))
else:
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'Z': pnt.z, 'F': self.horizFeed}))
# Rotate point data
if onLine is False:
prev = pnt
pnt = nxt
# Efor
PNTS.pop() # Remove temp end point
return output
def _stepTransitionCmds(self, obj, p1, p2, safePDC, tolrnc):
"""Generate transition commands / paths between two dropcutter steps or
passes, as well as other kinds of breaks. When
OptimizeStepOverTransitions is enabled, uses safePDC to safely optimize
short (~order of cutter diameter) transitions."""
cmds = list()
rtpd = False
height = obj.SafeHeight.Value
# Allow cutter-down transitions with a distance up to 2x cutter
# diameter. We might be able to extend this further to the
# full-retract-and-rapid break even point in the future, but this will
# require a safeSTL that has all non-cut surfaces raised sufficiently
# to avoid inadvertent cutting.
maxXYDistanceSqrd = (self.cutter.getDiameter() * 2)**2
if obj.OptimizeStepOverTransitions:
# Short distance within step over
xyDistanceSqrd = ((p1.x - p2.x)**2 + (p1.y - p2.y)**2)
# Try to keep cutting for short distances.
if xyDistanceSqrd <= maxXYDistanceSqrd:
# Try to keep cutting, following the model shape
(transLine, minZ, maxZ) = self._getTransitionLine(
safePDC, p1, p2, obj)
# For now, only optimize moderate deviations in Z direction, and
# no dropping below the min of p1 and p2, primarily for multi
# layer path safety.
zFloor = min(p1.z, p2.z)
if abs(minZ - maxZ) < self.cutter.getDiameter():
for pt in transLine[1:-1]:
cmds.append(
Path.Command('G1', {
'X': pt.x,
'Y': pt.y,
# Enforce zFloor
'Z': max(pt.z, zFloor),
'F': self.horizFeed
}))
# Use p2 (start of next step) verbatim
cmds.append(
Path.Command('G1', {
'X': p2.x,
'Y': p2.y,
'Z': p2.z,
'F': self.horizFeed
}))
return cmds
# For longer distances or large z deltas, we conservatively lift
# to SafeHeight for lack of an accurate stock model, but then
# speed up the drop back down when using multi pass, dropping
# quickly to *previous* layer depth.
stepDown = obj.StepDown.Value if hasattr(obj,
"StepDown") else 0
rtpd = min(height, p2.z + stepDown + 2)
# Create raise, shift, and optional lower commands
if height is not False:
cmds.append(Path.Command('G0', {'Z': height, 'F': self.vertRapid}))
cmds.append(
Path.Command('G0', {
'X': p2.x,
'Y': p2.y,
'F': self.horizRapid
}))
if rtpd is not False: # ReturnToPreviousDepth
cmds.append(Path.Command('G0', {'Z': rtpd, 'F': self.vertRapid}))
return cmds
def _arcsToG2G3(self, LN, numPts, odd, gDIR, tolrnc):
cmds = list()
strtPnt = LN[0]
endPnt = LN[numPts - 1]
strtHght = strtPnt.z
coPlanar = True
isCircle = False
gdi = 0
if odd is True:
gdi = 1
# Test if pnt set is circle
if abs(strtPnt.x - endPnt.x) < tolrnc:
if abs(strtPnt.y - endPnt.y) < tolrnc:
if abs(strtPnt.z - endPnt.z) < tolrnc:
isCircle = True
isCircle = False
if isCircle is True:
# convert LN to G2/G3 arc, consolidating GCode
# https://wiki.shapeoko.com/index.php/G-Code#G2_-_clockwise_arc
# https://www.cnccookbook.com/cnc-g-code-arc-circle-g02-g03/
# Dividing circle into two arcs allows for G2/G3 on inclined surfaces
# ijk = self.tmpCOM - strtPnt # vector from start to center
ijk = self.tmpCOM - strtPnt # vector from start to center
xyz = self.tmpCOM.add(ijk) # end point
cmds.append(Path.Command('G1', {'X': strtPnt.x, 'Y': strtPnt.y, 'Z': strtPnt.z, 'F': self.horizFeed}))
cmds.append(Path.Command(gDIR[gdi], {'X': xyz.x, 'Y': xyz.y, 'Z': xyz.z,
'I': ijk.x, 'J': ijk.y, 'K': ijk.z, # leave same xyz.z height
'F': self.horizFeed}))
cmds.append(Path.Command('G1', {'X': xyz.x, 'Y': xyz.y, 'Z': xyz.z, 'F': self.horizFeed}))
ijk = self.tmpCOM - xyz # vector from start to center
rst = strtPnt # end point
cmds.append(Path.Command(gDIR[gdi], {'X': rst.x, 'Y': rst.y, 'Z': rst.z,
'I': ijk.x, 'J': ijk.y, 'K': ijk.z, # leave same xyz.z height
'F': self.horizFeed}))
cmds.append(Path.Command('G1', {'X': strtPnt.x, 'Y': strtPnt.y, 'Z': strtPnt.z, 'F': self.horizFeed}))
else:
for pt in LN:
if abs(pt.z - strtHght) > tolrnc: # test for horizontal coplanar
coPlanar = False
break
if coPlanar is True:
# ijk = self.tmpCOM - strtPnt
ijk = self.tmpCOM.sub(strtPnt) # vector from start to center
xyz = endPnt
cmds.append(Path.Command('G1', {'X': strtPnt.x, 'Y': strtPnt.y, 'Z': strtPnt.z, 'F': self.horizFeed}))
cmds.append(Path.Command(gDIR[gdi], {'X': xyz.x, 'Y': xyz.y, 'Z': xyz.z,
'I': ijk.x, 'J': ijk.y, 'K': ijk.z, # leave same xyz.z height
'F': self.horizFeed}))
cmds.append(Path.Command('G1', {'X': endPnt.x, 'Y': endPnt.y, 'Z': endPnt.z, 'F': self.horizFeed}))
return (coPlanar, cmds)
def _planarApplyDepthOffset(self, SCANDATA, DepthOffset):
PathLog.debug('Applying DepthOffset value: {}'.format(DepthOffset))
lenScans = len(SCANDATA)
for s in range(0, lenScans):
SO = SCANDATA[s] # StepOver
numParts = len(SO)
for prt in range(0, numParts):
PRT = SO[prt]
if PRT != 'BRK':
numPts = len(PRT)
for pt in range(0, numPts):
SCANDATA[s][prt][pt].z += DepthOffset
def _planarGetPDC(self, stl, finalDep, SampleInterval, cutter):
pdc = ocl.PathDropCutter() # create a pdc [PathDropCutter] object
pdc.setSTL(stl) # add stl model
pdc.setCutter(cutter) # add cutter
pdc.setZ(finalDep) # set minimumZ (final / target depth value)
pdc.setSampling(SampleInterval) # set sampling size
return pdc
# Main rotational scan functions
def _processRotationalOp(self, JOB, obj, mdlIdx, compoundFaces=None):
PathLog.debug('_processRotationalOp(self, JOB, obj, mdlIdx, compoundFaces=None)')
base = JOB.Model.Group[mdlIdx]
bb = self.boundBoxes[mdlIdx]
stl = self.modelSTLs[mdlIdx]
# Rotate model to initial index
initIdx = obj.CutterTilt + obj.StartIndex
if initIdx != 0.0:
self.basePlacement = FreeCAD.ActiveDocument.getObject(base.Name).Placement
if obj.RotationAxis == 'X':
base.Placement = FreeCAD.Placement(FreeCAD.Vector(0.0, 0.0, 0.0), FreeCAD.Rotation(FreeCAD.Vector(1.0, 0.0, 0.0), initIdx))
else:
base.Placement = FreeCAD.Placement(FreeCAD.Vector(0.0, 0.0, 0.0), FreeCAD.Rotation(FreeCAD.Vector(0.0, 1.0, 0.0), initIdx))
# Prepare global holdpoint container
if self.holdPoint is None:
self.holdPoint = FreeCAD.Vector(0.0, 0.0, 0.0)
if self.layerEndPnt is None:
self.layerEndPnt = FreeCAD.Vector(0.0, 0.0, 0.0)
# Avoid division by zero in rotational scan calculations
if obj.FinalDepth.Value == 0.0:
zero = obj.SampleInterval.Value # 0.00001
self.FinalDepth = zero
# obj.FinalDepth.Value = 0.0
else:
self.FinalDepth = obj.FinalDepth.Value
# Determine boundbox radius based upon xzy limits data
if math.fabs(bb.ZMin) > math.fabs(bb.ZMax):
vlim = bb.ZMin
else:
vlim = bb.ZMax
if obj.RotationAxis == 'X':
# Rotation is around X-axis, cutter moves along same axis
if math.fabs(bb.YMin) > math.fabs(bb.YMax):
hlim = bb.YMin
else:
hlim = bb.YMax
else:
# Rotation is around Y-axis, cutter moves along same axis
if math.fabs(bb.XMin) > math.fabs(bb.XMax):
hlim = bb.XMin
else:
hlim = bb.XMax
# Compute max radius of stock, as it rotates, and rotational clearance & safe heights
self.bbRadius = math.sqrt(hlim**2 + vlim**2)
self.clearHeight = self.bbRadius + JOB.SetupSheet.ClearanceHeightOffset.Value
self.safeHeight = self.bbRadius + JOB.SetupSheet.ClearanceHeightOffset.Value
return self._rotationalDropCutterOp(obj, stl, bb)
def _rotationalDropCutterOp(self, obj, stl, bb):
self.resetTolerance = 0.0000001 # degrees
self.layerEndzMax = 0.0
commands = []
scanLines = []
advances = []
iSTG = []
rSTG = []
rings = []
lCnt = 0
rNum = 0
bbRad = self.bbRadius
def invertAdvances(advances):
idxs = [1.1]
for adv in advances:
idxs.append(-1 * adv)
idxs.pop(0)
return idxs
def linesToPointRings(scanLines):
rngs = []
numPnts = len(scanLines[0]) # Number of points per line along axis, at obj.SampleInterval.Value spacing
for line in scanLines: # extract circular set(ring) of points from scan lines
if len(line) != numPnts:
PathLog.debug('Error: line lengths not equal')
return rngs
for num in range(0, numPnts):
rngs.append([1.1]) # Initiate new ring
for line in scanLines: # extract circular set(ring) of points from scan lines
rngs[num].append(line[num])
rngs[num].pop(0)
return rngs
def indexAdvances(arc, stepDeg):
indexes = [0.0]
numSteps = int(math.floor(arc / stepDeg))
for ns in range(0, numSteps):
indexes.append(stepDeg)
travel = sum(indexes)
if arc == 360.0:
indexes.insert(0, 0.0)
else:
indexes.append(arc - travel)
return indexes
# Compute number and size of stepdowns, and final depth
if obj.LayerMode == 'Single-pass':
depthparams = [self.FinalDepth]
else:
dep_par = PathUtils.depth_params(self.clearHeight, self.safeHeight, self.bbRadius, obj.StepDown.Value, 0.0, self.FinalDepth)
depthparams = [i for i in dep_par]
prevDepth = depthparams[0]
lenDP = len(depthparams)
# Set drop cutter extra offset
cdeoX = obj.DropCutterExtraOffset.x
cdeoY = obj.DropCutterExtraOffset.y
# Set updated bound box values and redefine the new min/mas XY area of the operation based on greatest point radius of model
bb.ZMin = -1 * bbRad
bb.ZMax = bbRad
if obj.RotationAxis == 'X':
bb.YMin = -1 * bbRad
bb.YMax = bbRad
ymin = 0.0
ymax = 0.0
xmin = bb.XMin - cdeoX
xmax = bb.XMax + cdeoX
else:
bb.XMin = -1 * bbRad
bb.XMax = bbRad
ymin = bb.YMin - cdeoY
ymax = bb.YMax + cdeoY
xmin = 0.0
xmax = 0.0
# Calculate arc
begIdx = obj.StartIndex
endIdx = obj.StopIndex
if endIdx < begIdx:
begIdx -= 360.0
arc = endIdx - begIdx
# Begin gcode operation with raising cutter to safe height
commands.append(Path.Command('G0', {'Z': self.safeHeight, 'F': self.vertRapid}))
# Complete rotational scans at layer and translate into gcode
for layDep in depthparams:
t_before = time.time()
# Compute circumference and step angles for current layer
layCircum = 2 * math.pi * layDep
if lenDP == 1:
layCircum = 2 * math.pi * bbRad
# Set axial feed rates
self.axialFeed = 360 / layCircum * self.horizFeed
self.axialRapid = 360 / layCircum * self.horizRapid
# Determine step angle.
if obj.RotationAxis == obj.DropCutterDir: # Same == indexed
stepDeg = (self.cutOut / layCircum) * 360.0
else:
stepDeg = (obj.SampleInterval.Value / layCircum) * 360.0
# Limit step angle and determine rotational index angles [indexes].
if stepDeg > 120.0:
stepDeg = 120.0
advances = indexAdvances(arc, stepDeg) # Reset for each step down layer
# Perform rotational indexed scans to layer depth
if obj.RotationAxis == obj.DropCutterDir: # Same == indexed OR parallel
sample = obj.SampleInterval.Value
else:
sample = self.cutOut
scanLines = self._indexedDropCutScan(obj, stl, advances, xmin, ymin, xmax, ymax, layDep, sample)
# Complete rotation if necessary
if arc == 360.0:
advances.append(360.0 - sum(advances))
advances.pop(0)
zero = scanLines.pop(0)
scanLines.append(zero)
# Translate OCL scans into gcode
if obj.RotationAxis == obj.DropCutterDir: # Same == indexed (cutter runs parallel to axis)
# Translate scan to gcode
sumAdv = begIdx
for sl in range(0, len(scanLines)):
sumAdv += advances[sl]
# Translate scan to gcode
iSTG = self._indexedScanToGcode(obj, sl, scanLines[sl], sumAdv, prevDepth, layDep, lenDP)
commands.extend(iSTG)
# Raise cutter to safe height after each index cut
commands.append(Path.Command('G0', {'Z': self.clearHeight, 'F': self.vertRapid}))
# Eol
else:
if self.CutClimb is False:
advances = invertAdvances(advances)
advances.reverse()
scanLines.reverse()
# Begin gcode operation with raising cutter to safe height
commands.append(Path.Command('G0', {'Z': self.clearHeight, 'F': self.vertRapid}))
# Convert rotational scans into gcode
rings = linesToPointRings(scanLines)
rNum = 0
for rng in rings:
rSTG = self._rotationalScanToGcode(obj, rng, rNum, prevDepth, layDep, advances)
commands.extend(rSTG)
if arc != 360.0:
clrZ = self.layerEndzMax + self.SafeHeightOffset
commands.append(Path.Command('G0', {'Z': clrZ, 'F': self.vertRapid}))
rNum += 1
# Eol
prevDepth = layDep
lCnt += 1 # increment layer count
PathLog.debug("--Layer " + str(lCnt) + ": " + str(len(advances)) + " OCL scans and gcode in " + str(time.time() - t_before) + " s")
# Eol
return commands
def _indexedDropCutScan(self, obj, stl, advances, xmin, ymin, xmax, ymax, layDep, sample):
cutterOfst = 0.0
iCnt = 0
Lines = []
result = None
pdc = ocl.PathDropCutter() # create a pdc
pdc.setCutter(self.cutter)
pdc.setZ(layDep) # set minimumZ (final / ta9rget depth value)
pdc.setSampling(sample)
# if self.useTiltCutter == True:
if obj.CutterTilt != 0.0:
cutterOfst = layDep * math.sin(math.radians(obj.CutterTilt))
PathLog.debug("CutterTilt: cutterOfst is " + str(cutterOfst))
sumAdv = 0.0
for adv in advances:
sumAdv += adv
if adv > 0.0:
# Rotate STL object using OCL method
radsRot = math.radians(adv)
if obj.RotationAxis == 'X':
stl.rotate(radsRot, 0.0, 0.0)
else:
stl.rotate(0.0, radsRot, 0.0)
# Set STL after rotation is made
pdc.setSTL(stl)
# add Line objects to the path in this loop
if obj.RotationAxis == 'X':
p1 = ocl.Point(xmin, cutterOfst, 0.0) # start-point of line
p2 = ocl.Point(xmax, cutterOfst, 0.0) # end-point of line
else:
p1 = ocl.Point(cutterOfst, ymin, 0.0) # start-point of line
p2 = ocl.Point(cutterOfst, ymax, 0.0) # end-point of line
# Create line object
if obj.RotationAxis == obj.DropCutterDir: # parallel cut
if obj.CutPattern == 'ZigZag':
if (iCnt % 2 == 0.0): # even
lo = ocl.Line(p1, p2)
else: # odd
lo = ocl.Line(p2, p1)
elif obj.CutPattern == 'Line':
if self.CutClimb is True:
lo = ocl.Line(p2, p1)
else:
lo = ocl.Line(p1, p2)
else:
lo = ocl.Line(p1, p2) # line-object
path = ocl.Path() # create an empty path object
path.append(lo) # add the line to the path
pdc.setPath(path) # set path
pdc.run() # run drop-cutter on the path
result = pdc.getCLPoints() # request the list of points
# Convert list of OCL objects to list of Vectors for faster access and Apply depth offset
if obj.DepthOffset.Value != 0.0:
Lines.append([FreeCAD.Vector(p.x, p.y, p.z + obj.DepthOffset.Value) for p in result])
else:
Lines.append([FreeCAD.Vector(p.x, p.y, p.z) for p in result])
iCnt += 1
# End loop
# Rotate STL object back to original position using OCL method
reset = -1 * math.radians(sumAdv - self.resetTolerance)
if obj.RotationAxis == 'X':
stl.rotate(reset, 0.0, 0.0)
else:
stl.rotate(0.0, reset, 0.0)
self.resetTolerance = 0.0
return Lines
def _indexedScanToGcode(self, obj, li, CLP, idxAng, prvDep, layerDepth, numDeps):
# generate the path commands
output = []
optimize = obj.OptimizeLinearPaths
holdCount = 0
holdStart = False
holdStop = False
zMax = prvDep
lenCLP = len(CLP)
lastCLP = lenCLP - 1
prev = FreeCAD.Vector(0.0, 0.0, 0.0)
nxt = FreeCAD.Vector(0.0, 0.0, 0.0)
# Create first point
pnt = CLP[0]
# Rotate to correct index location
if obj.RotationAxis == 'X':
output.append(Path.Command('G0', {'A': idxAng, 'F': self.axialFeed}))
else:
output.append(Path.Command('G0', {'B': idxAng, 'F': self.axialFeed}))
if li > 0:
if pnt.z > self.layerEndPnt.z:
clrZ = pnt.z + 2.0
output.append(Path.Command('G1', {'Z': clrZ, 'F': self.vertRapid}))
else:
output.append(Path.Command('G0', {'Z': self.clearHeight, 'F': self.vertRapid}))
output.append(Path.Command('G0', {'X': pnt.x, 'Y': pnt.y, 'F': self.horizRapid}))
output.append(Path.Command('G1', {'Z': pnt.z, 'F': self.vertFeed}))
for i in range(0, lenCLP):
if i < lastCLP:
nxt = CLP[i + 1]
else:
optimize = False
# Update zMax values
if pnt.z > zMax:
zMax = pnt.z
if obj.LayerMode == 'Multi-pass':
# if z travels above previous layer, start/continue hold high cycle
if pnt.z > prvDep and optimize is True:
if self.onHold is False:
holdStart = True
self.onHold = True
if self.onHold is True:
if holdStart is True:
# go to current coordinate
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'Z': pnt.z, 'F': self.horizFeed}))
# Save holdStart coordinate and prvDep values
self.holdPoint = pnt
holdCount += 1 # Increment hold count
holdStart = False # cancel holdStart
# hold cutter high until Z value drops below prvDep
if pnt.z <= prvDep:
holdStop = True
if holdStop is True:
# Send hold and current points to
zMax += 2.0
for cmd in self.holdStopCmds(obj, zMax, prvDep, pnt, "Hold Stop: in-line"):
output.append(cmd)
# reset necessary hold related settings
zMax = prvDep
holdStop = False
self.onHold = False
self.holdPoint = FreeCAD.Vector(0.0, 0.0, 0.0)
if self.onHold is False:
if not optimize or not pnt.isOnLineSegment(prev, nxt):
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'Z': pnt.z, 'F': self.horizFeed}))
# Rotate point data
prev = pnt
pnt = nxt
output.append(Path.Command('N (End index angle ' + str(round(idxAng, 4)) + ')', {}))
# Save layer end point for use in transitioning to next layer
self.layerEndPnt = pnt
return output
def _rotationalScanToGcode(self, obj, RNG, rN, prvDep, layDep, advances):
'''_rotationalScanToGcode(obj, RNG, rN, prvDep, layDep, advances) ...
Convert rotational scan data to gcode path commands.'''
output = []
nxtAng = 0
zMax = 0.0
nxt = FreeCAD.Vector(0.0, 0.0, 0.0)
begIdx = obj.StartIndex
endIdx = obj.StopIndex
if endIdx < begIdx:
begIdx -= 360.0
# Rotate to correct index location
axisOfRot = 'A'
if obj.RotationAxis == 'Y':
axisOfRot = 'B'
# Create first point
ang = 0.0 + obj.CutterTilt
pnt = RNG[0]
# Adjust feed rate based on radius/circumference of cutter.
# Original feed rate based on travel at circumference.
if rN > 0:
if pnt.z >= self.layerEndzMax:
clrZ = pnt.z + 5.0
output.append(Path.Command('G1', {'Z': clrZ, 'F': self.vertRapid}))
else:
output.append(Path.Command('G1', {'Z': self.clearHeight, 'F': self.vertRapid}))
output.append(Path.Command('G0', {axisOfRot: ang, 'F': self.axialFeed}))
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'F': self.axialFeed}))
output.append(Path.Command('G1', {'Z': pnt.z, 'F': self.axialFeed}))
lenRNG = len(RNG)
lastIdx = lenRNG - 1
for i in range(0, lenRNG):
if i < lastIdx:
nxtAng = ang + advances[i + 1]
nxt = RNG[i + 1]
if pnt.z > zMax:
zMax = pnt.z
output.append(Path.Command('G1', {'X': pnt.x, 'Y': pnt.y, 'Z': pnt.z, axisOfRot: ang, 'F': self.axialFeed}))
pnt = nxt
ang = nxtAng
# Save layer end point for use in transitioning to next layer
self.layerEndPnt = RNG[0]
self.layerEndzMax = zMax
return output
def holdStopCmds(self, obj, zMax, pd, p2, txt):
'''holdStopCmds(obj, zMax, pd, p2, txt) ... Gcode commands to be executed at beginning of hold.'''
cmds = []
msg = 'N (' + txt + ')'
cmds.append(Path.Command(msg, {})) # Raise cutter rapid to zMax in line of travel
cmds.append(Path.Command('G0', {'Z': zMax, 'F': self.vertRapid})) # Raise cutter rapid to zMax in line of travel
cmds.append(Path.Command('G0', {'X': p2.x, 'Y': p2.y, 'F': self.horizRapid})) # horizontal rapid to current XY coordinate
if zMax != pd:
cmds.append(Path.Command('G0', {'Z': pd, 'F': self.vertRapid})) # drop cutter down rapidly to prevDepth depth
cmds.append(Path.Command('G0', {'Z': p2.z, 'F': self.vertFeed})) # drop cutter down to current Z depth, returning to normal cut path and speed
return cmds
# Additional support methods
def resetOpVariables(self, all=True):
'''resetOpVariables() ... Reset class variables used for instance of operation.'''
self.holdPoint = None
self.layerEndPnt = None
self.onHold = False
self.SafeHeightOffset = 2.0
self.ClearHeightOffset = 4.0
self.layerEndzMax = 0.0
self.resetTolerance = 0.0
self.holdPntCnt = 0
self.bbRadius = 0.0
self.axialFeed = 0.0
self.axialRapid = 0.0
self.FinalDepth = 0.0
self.clearHeight = 0.0
self.safeHeight = 0.0
self.faceZMax = -999999999999.0
if all is True:
self.cutter = None
self.stl = None
self.fullSTL = None
self.cutOut = 0.0
self.radius = 0.0
self.useTiltCutter = False
return True
def deleteOpVariables(self, all=True):
'''deleteOpVariables() ... Reset class variables used for instance of operation.'''
del self.holdPoint
del self.layerEndPnt
del self.onHold
del self.SafeHeightOffset
del self.ClearHeightOffset
del self.layerEndzMax
del self.resetTolerance
del self.holdPntCnt
del self.bbRadius
del self.axialFeed
del self.axialRapid
del self.FinalDepth
del self.clearHeight
del self.safeHeight
del self.faceZMax
if all is True:
del self.cutter
del self.stl
del self.fullSTL
del self.cutOut
del self.radius
del self.useTiltCutter
return True
def setOclCutter(self, obj, safe=False):
''' setOclCutter(obj) ... Translation function to convert FreeCAD tool definition to OCL formatted tool. '''
# Set cutter details
# https://www.freecadweb.org/api/dd/dfe/classPath_1_1Tool.html#details
diam_1 = float(obj.ToolController.Tool.Diameter)
lenOfst = obj.ToolController.Tool.LengthOffset if hasattr(obj.ToolController.Tool, 'LengthOffset') else 0
FR = obj.ToolController.Tool.FlatRadius if hasattr(obj.ToolController.Tool, 'FlatRadius') else 0
CEH = obj.ToolController.Tool.CuttingEdgeHeight if hasattr(obj.ToolController.Tool, 'CuttingEdgeHeight') else 0
CEA = obj.ToolController.Tool.CuttingEdgeAngle if hasattr(obj.ToolController.Tool, 'CuttingEdgeAngle') else 0
# Make safeCutter with 2 mm buffer around physical cutter
if safe is True:
diam_1 += 4.0
if FR != 0.0:
FR += 2.0
PathLog.debug('ToolType: {}'.format(obj.ToolController.Tool.ToolType))
if obj.ToolController.Tool.ToolType == 'EndMill':
# Standard End Mill
return ocl.CylCutter(diam_1, (CEH + lenOfst))
elif obj.ToolController.Tool.ToolType == 'BallEndMill' and FR == 0.0:
# Standard Ball End Mill
# OCL -> BallCutter::BallCutter(diameter, length)
self.useTiltCutter = True
return ocl.BallCutter(diam_1, (diam_1 / 2 + lenOfst))
elif obj.ToolController.Tool.ToolType == 'BallEndMill' and FR > 0.0:
# Bull Nose or Corner Radius cutter
# Reference: https://www.fine-tools.com/halbstabfraeser.html
# OCL -> BallCutter::BallCutter(diameter, length)
return ocl.BullCutter(diam_1, FR, (CEH + lenOfst))
elif obj.ToolController.Tool.ToolType == 'Engraver' and FR > 0.0:
# Bull Nose or Corner Radius cutter
# Reference: https://www.fine-tools.com/halbstabfraeser.html
# OCL -> ConeCutter::ConeCutter(diameter, angle, lengthOffset)
return ocl.ConeCutter(diam_1, (CEA / 2), lenOfst)
elif obj.ToolController.Tool.ToolType == 'ChamferMill':
# Bull Nose or Corner Radius cutter
# Reference: https://www.fine-tools.com/halbstabfraeser.html
# OCL -> ConeCutter::ConeCutter(diameter, angle, lengthOffset)
return ocl.ConeCutter(diam_1, (CEA / 2), lenOfst)
else:
# Default to standard end mill
PathLog.warning("Defaulting cutter to standard end mill.")
return ocl.CylCutter(diam_1, (CEH + lenOfst))
def _optimizeLinearSegments(self, line):
"""Eliminate collinear interior segments"""
if len(line) > 2:
prv, pnt = line[0:2]
pts = [prv]
for nxt in line[2:]:
if not pnt.isOnLineSegment(prv, nxt):
pts.append(pnt)
prv = pnt
pnt = nxt
pts.append(line[-1])
return pts
else:
return line
def _getTransitionLine(self, pdc, p1, p2, obj):
"""Use an OCL PathDropCutter to generate a safe transition path between
two points in the x/y plane."""
p1xy, p2xy = ((p1.x, p1.y), (p2.x, p2.y))
pdcLine = self._planarDropCutScan(pdc, p1xy, p2xy)
if obj.OptimizeLinearPaths:
pdcLine = self._optimizeLinearSegments(pdcLine)
zs = [obj.z for obj in pdcLine]
# PDC z values are based on the model, and do not take into account
# any remaining stock / multi layer paths. Adjust raw PDC z values to
# align with p1 and p2 z values.
zDelta = p1.z - pdcLine[0].z
if zDelta > 0:
for p in pdcLine:
p.z += zDelta
return (pdcLine, min(zs), max(zs))
def showDebugObject(self, objShape, objName):
if self.showDebugObjects:
do = FreeCAD.ActiveDocument.addObject('Part::Feature', 'tmp_' + objName)
do.Shape = objShape
do.purgeTouched()
self.tempGroup.addObject(do)
def SetupProperties():
''' SetupProperties() ... Return list of properties required for operation.'''
setup = ['AvoidLastX_Faces', 'AvoidLastX_InternalFeatures', 'BoundBox']
setup.extend(['BoundaryAdjustment', 'PatternCenterAt', 'PatternCenterCustom'])
setup.extend(['CircularUseG2G3', 'InternalFeaturesCut', 'InternalFeaturesAdjustment'])
setup.extend(['CutMode', 'CutPattern', 'CutPatternAngle', 'CutPatternReversed'])
setup.extend(['CutterTilt', 'DepthOffset', 'DropCutterDir', 'GapSizes', 'GapThreshold'])
setup.extend(['HandleMultipleFeatures', 'LayerMode', 'OptimizeStepOverTransitions'])
setup.extend(['ProfileEdges', 'BoundaryEnforcement', 'RotationAxis', 'SampleInterval'])
setup.extend(['ScanType', 'StartIndex', 'StartPoint', 'StepOver', 'StopIndex'])
setup.extend(['UseStartPoint', 'AngularDeflection', 'LinearDeflection', 'ShowTempObjects'])
return setup
def Create(name, obj=None):
'''Create(name) ... Creates and returns a Surface operation.'''
if obj is None:
obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython", name)
obj.Proxy = ObjectSurface(obj, name)
return obj
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