# -*- coding: utf-8 -*- # *************************************************************************** # * Copyright (c) 2016 sliptonic * # * * # * 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 * # * * # *************************************************************************** __title__ = "CAM Surface Operation" __author__ = "sliptonic (Brad Collette)" __url__ = "https://www.freecad.org" __doc__ = "Class and implementation of 3D Surface operation." __contributors__ = "russ4262 (Russell Johnson)" import FreeCAD translate = FreeCAD.Qt.translate # OCL must be installed try: try: import ocl except ImportError: import opencamlib as ocl except ImportError: msg = translate("PathSurface", "This operation requires OpenCamLib to be installed.") FreeCAD.Console.PrintError(msg + "\n") raise ImportError # import sys # sys.exit(msg) from PySide.QtCore import QT_TRANSLATE_NOOP import Path import Path.Op.Base as PathOp import Path.Op.SurfaceSupport as PathSurfaceSupport import PathScripts.PathUtils as PathUtils import math import time # lazily loaded modules from lazy_loader.lazy_loader import LazyLoader Part = LazyLoader("Part", globals(), "Part") if FreeCAD.GuiUp: import FreeCADGui if False: Path.Log.setLevel(Path.Log.Level.DEBUG, Path.Log.thisModule()) Path.Log.trackModule(Path.Log.thisModule()) else: Path.Log.setLevel(Path.Log.Level.INFO, Path.Log.thisModule()) 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 Path.Log.getLevel(Path.Log.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 = [] 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 for n in self.propertyEnumerations(): setattr(obj, n[0], n[1]) self.propertiesReady = True def opPropertyDefinitions(self): """opPropertyDefinitions(obj) ... Store operation specific properties""" return [ ( "App::PropertyBool", "ShowTempObjects", "Debug", QT_TRANSLATE_NOOP( "App::Property", "Show the temporary path construction objects when module is in DEBUG mode.", ), ), ( "App::PropertyDistance", "AngularDeflection", "Mesh Conversion", 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", 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", QT_TRANSLATE_NOOP("App::Property", "Stop index(angle) for rotational scan"), ), ( "App::PropertyEnumeration", "DropCutterDir", "Rotation", QT_TRANSLATE_NOOP( "App::Property", "Dropcutter lines are created parallel to this axis.", ), ), ( "App::PropertyVectorDistance", "DropCutterExtraOffset", "Rotation", QT_TRANSLATE_NOOP( "App::Property", "Additional offset to the selected bounding box" ), ), ( "App::PropertyEnumeration", "RotationAxis", "Rotation", QT_TRANSLATE_NOOP("App::Property", "The model will be rotated around this axis."), ), ( "App::PropertyFloat", "StartIndex", "Rotation", QT_TRANSLATE_NOOP("App::Property", "Start index(angle) for rotational scan"), ), ( "App::PropertyFloat", "StopIndex", "Rotation", QT_TRANSLATE_NOOP("App::Property", "Stop index(angle) for rotational scan"), ), ( "App::PropertyEnumeration", "ScanType", "Surface", QT_TRANSLATE_NOOP( "App::Property", "Planar: Flat, 3D surface scan. Rotational: 4th-axis rotational scan.", ), ), ( "App::PropertyInteger", "AvoidLastX_Faces", "Selected Geometry Settings", 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", QT_TRANSLATE_NOOP( "App::Property", "Do not cut internal features on avoided faces." ), ), ( "App::PropertyDistance", "BoundaryAdjustment", "Selected Geometry Settings", 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", 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", QT_TRANSLATE_NOOP( "App::Property", "Choose how to process multiple Base Geometry features.", ), ), ( "App::PropertyDistance", "InternalFeaturesAdjustment", "Selected Geometry Settings", 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", QT_TRANSLATE_NOOP( "App::Property", "Cut internal feature areas within a larger selected face.", ), ), ( "App::PropertyEnumeration", "BoundBox", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "Select the overall boundary for the operation." ), ), ( "App::PropertyEnumeration", "CutMode", "Clearing Options", 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", QT_TRANSLATE_NOOP( "App::Property", "Set the geometric clearing pattern to use for the operation.", ), ), ( "App::PropertyFloat", "CutPatternAngle", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "The yaw angle used for certain clearing patterns" ), ), ( "App::PropertyBool", "CutPatternReversed", "Clearing Options", 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", QT_TRANSLATE_NOOP( "App::Property", "Set the Z-axis depth offset from the target surface.", ), ), ( "App::PropertyEnumeration", "LayerMode", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "Complete the operation in a single pass at depth, or multiple passes to final depth.", ), ), ( "App::PropertyVectorDistance", "PatternCenterCustom", "Clearing Options", QT_TRANSLATE_NOOP("App::Property", "Set the start point for the cut pattern."), ), ( "App::PropertyEnumeration", "PatternCenterAt", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "Choose location of the center point for starting the cut pattern.", ), ), ( "App::PropertyEnumeration", "ProfileEdges", "Clearing Options", QT_TRANSLATE_NOOP("App::Property", "Profile the edges of the selection."), ), ( "App::PropertyDistance", "SampleInterval", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "Set the sampling resolution. Smaller values quickly increase processing time.", ), ), ( "App::PropertyFloat", "StepOver", "Clearing Options", QT_TRANSLATE_NOOP( "App::Property", "Set the stepover percentage, based on the tool's diameter.", ), ), ( "App::PropertyBool", "OptimizeLinearPaths", "Optimization", 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", QT_TRANSLATE_NOOP( "App::Property", "Enable separate optimization of transitions between, and breaks within, each step over path.", ), ), ( "App::PropertyBool", "CircularUseG2G3", "Optimization", QT_TRANSLATE_NOOP( "App::Property", "Convert co-planar arcs to G2/G3 G-code commands for `Circular` and `CircularZigZag` cut patterns.", ), ), ( "App::PropertyDistance", "GapThreshold", "Optimization", 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", QT_TRANSLATE_NOOP( "App::Property", "Feedback: three smallest gaps identified in the path geometry.", ), ), ( "App::PropertyVectorDistance", "StartPoint", "Start Point", QT_TRANSLATE_NOOP( "App::Property", "The custom start point for the path of this operation", ), ), ( "App::PropertyBool", "UseStartPoint", "Start Point", QT_TRANSLATE_NOOP("App::Property", "Make True, if specifying a Start Point"), ), ] @classmethod def propertyEnumerations(cls, dataType="data"): """propertyEnumerations(dataType="data")... return property enumeration lists of specified dataType. Args: dataType = 'data', 'raw', 'translated' Notes: 'data' is list of internal string literals used in code 'raw' is list of (translated_text, data_string) tuples 'translated' is list of translated string literals """ # Enumeration lists for App::PropertyEnumeration properties enums = { "BoundBox": [ (translate("CAM_Surface", "BaseBoundBox"), "BaseBoundBox"), (translate("CAM_Surface", "Stock"), "Stock"), ], "PatternCenterAt": [ (translate("CAM_Surface", "CenterOfMass"), "CenterOfMass"), (translate("CAM_Surface", "CenterOfBoundBox"), "CenterOfBoundBox"), (translate("CAM_Surface", "XminYmin"), "XminYmin"), (translate("CAM_Surface", "Custom"), "Custom"), ], "CutMode": [ (translate("CAM_Surface", "Conventional"), "Conventional"), (translate("CAM_Surface", "Climb"), "Climb"), ], "CutPattern": [ (translate("CAM_Surface", "Circular"), "Circular"), (translate("CAM_Surface", "CircularZigZag"), "CircularZigZag"), (translate("CAM_Surface", "Line"), "Line"), (translate("CAM_Surface", "Offset"), "Offset"), (translate("CAM_Surface", "Spiral"), "Spiral"), (translate("CAM_Surface", "ZigZag"), "ZigZag"), ], "DropCutterDir": [ (translate("CAM_Surface", "X"), "X"), (translate("CAM_Surface", "Y"), "Y"), ], "HandleMultipleFeatures": [ (translate("CAM_Surface", "Collectively"), "Collectively"), (translate("CAM_Surface", "Individually"), "Individually"), ], "LayerMode": [ (translate("CAM_Surface", "Single-pass"), "Single-pass"), (translate("CAM_Surface", "Multi-pass"), "Multi-pass"), ], "ProfileEdges": [ (translate("CAM_Surface", "None"), "None"), (translate("CAM_Surface", "Only"), "Only"), (translate("CAM_Surface", "First"), "First"), (translate("CAM_Surface", "Last"), "Last"), ], "RotationAxis": [ (translate("CAM_Surface", "X"), "X"), (translate("CAM_Surface", "Y"), "Y"), ], "ScanType": [ (translate("CAM_Surface", "Planar"), "Planar"), (translate("CAM_Surface", "Rotational"), "Rotational"), ], } if dataType == "raw": return enums data = [] idx = 0 if dataType == "translated" else 1 for k, v in enumerate(enums): data.append((v, [tup[idx] for tup in enums[v]])) return data 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 Path.Log.getLevel(Path.Log.thisModule()) != 4 else 0 obj.setEditorMode("ShowTempObjects", mode) # Repopulate enumerations in case of changes for prop, enums in ObjectSurface.propertyEnumerations(): restore = False if hasattr(obj, prop): val = obj.getPropertyByName(prop) restore = True setattr(obj, prop, enums) if restore: setattr(obj, prop, 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: 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) Path.Log.debug("job.Stock exists") else: Path.Log.debug("job.Stock NOT exist") else: Path.Log.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 Path.Log.debug("Default OpFinalDepth: {}".format(obj.OpFinalDepth.Value)) Path.Log.debug("Default 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 Path.Log.error("Sample interval limits are 0.001 to 25.4 millimeters.") if obj.SampleInterval.Value > 25.4: obj.SampleInterval.Value = 25.4 Path.Log.error("Sample interval limits are 0.001 to 25.4 millimeters.") # Limit cut pattern angle if obj.CutPatternAngle < -360.0: obj.CutPatternAngle = 0.0 Path.Log.error("Cut pattern angle limits are +-360 degrees.") if obj.CutPatternAngle >= 360.0: obj.CutPatternAngle = 0.0 Path.Log.error("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 Path.Log.error("AvoidLastX_Faces: Only zero or positive values permitted.") if obj.AvoidLastX_Faces > 100: obj.AvoidLastX_Faces = 100 Path.Log.error("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: Path.Log.error(e) obj.OpFinalDepth = zmin elif self.job: if hasattr(obj, "BoundBox"): if obj.BoundBox == "BaseBoundBox": models = self.job.Model.Group zmin = models[0].Shape.BoundBox.ZMin for M in models: zmin = min(zmin, M.Shape.BoundBox.ZMin) obj.OpFinalDepth = zmin if obj.BoundBox == "Stock": models = self.job.Stock obj.OpFinalDepth = self.job.Stock.Shape.BoundBox.ZMin def opExecute(self, obj): """opExecute(obj) ... process surface operation""" Path.Log.track() self.modelSTLs = [] self.safeSTLs = [] self.modelTypes = [] self.boundBoxes = [] self.profileShapes = [] self.collectiveShapes = [] self.individualShapes = [] self.avoidShapes = [] self.tempGroup = None self.CutClimb = False self.closedGap = False self.tmpCOM = None self.gaps = [0.1, 0.2, 0.3] self.cancelOperation = False CMDS = [] modelVisibility = [] 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 Path.Log.getLevel(Path.Log.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: Path.Log.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: if self.CutClimb: self.CutClimb = False else: self.CutClimb = True # Instantiate additional class operation variables self.resetOpVariables() # Setup cutter for OCL and cutout value for operation - based on tool controller properties oclTool = PathSurfaceSupport.OCL_Tool(ocl, obj) self.cutter = oclTool.getOclTool() if not self.cutter: Path.Log.error( translate( "PathSurface", "Canceling 3D Surface operation. Error creating OCL cutter.", ) ) return self.toolDiam = self.cutter.getDiameter() # oclTool.diameter self.radius = self.toolDiam / 2.0 self.useTiltCutter = oclTool.useTiltCutter() self.cutOut = self.toolDiam * (float(obj.StepOver) / 100.0) self.gaps = [self.toolDiam, self.toolDiam, self.toolDiam] # 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(oclTool.toolType), {})) self.commandlist.append( Path.Command("N (Compensated Tool Path. Diameter: {})".format(oclTool.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, }, ) ) # 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) # 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 model in JOB.Model.Group: mNm = model.Name modelVisibility.append(FreeCADGui.ActiveDocument.getObject(mNm).Visibility) # Setup STL, model type, and bound box containers for each model in Job for model in JOB.Model.Group: self.modelSTLs.append(False) self.safeSTLs.append(False) self.profileShapes.append(False) # Set bound box if obj.BoundBox == "BaseBoundBox": if model.TypeId.startswith("Mesh"): self.modelTypes.append("M") # Mesh self.boundBoxes.append(model.Mesh.BoundBox) else: self.modelTypes.append("S") # Solid self.boundBoxes.append(model.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 idx, model in enumerate(JOB.Model.Group): Path.Log.debug(idx) # Create OCL.stl model objects PathSurfaceSupport._prepareModelSTLs(self, JOB, obj, idx, ocl) if FACES[idx]: Path.Log.debug("Working on Model.Group[{}]: {}".format(idx, model.Label)) if idx > 0: # Raise to clearance between models CMDS.append(Path.Command("N (Transition to base: {}.)".format(model.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, idx, FACES[idx], VOIDS[idx], ocl ) # Process model/faces - OCL objects must be ready CMDS.extend(self._processCutAreas(JOB, obj, idx, FACES[idx], VOIDS[idx])) else: Path.Log.debug("No data for model base: {}".format(model.Label)) # Save gcode produced self.commandlist.extend(CMDS) else: Path.Log.error("Failed to pre-process model and/or selected face(s).") # ###### 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 = [] 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.""" Path.Log.debug("_processCutAreas()") final = [] # 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.""" Path.Log.debug("_processPlanarOp()") final = [] SCANDATA = [] 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 = [] if obj.ProfileEdges != "None": prflShp = self.profileShapes[mdlIdx][fsi] if prflShp is False: msg = translate("PathSurface", "No profile geometry shape returned.") Path.Log.error(msg) return [] 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.") Path.Log.error(msg) return [] profScan = [self._planarPerformOclScan(obj, pdc, pathOffsetGeom, True)] geoScan = [] 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.") Path.Log.error(msg) return [] if obj.CutPattern == "Offset": useGeom = self._offsetFacesToPointData(obj, pathGeom, profile=False) if useGeom is False: msg = translate("PathSurface", "No clearing path geometry returned.") Path.Log.error(msg) return [] 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("PathSurface", "No scan data to convert to G-code.") Path.Log.error(msg) return [] # 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): Path.Log.debug("_offsetFacesToPointData()") offsetLists = [] 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.freecad.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.""" Path.Log.debug("_planarPerformOclScan()") SCANS = [] if offsetPoints or obj.CutPattern == "Offset": PNTSET = PathSurfaceSupport.pathGeomToOffsetPointSet(obj, pathGeom) for D in PNTSET: stpOvr = [] ofst = [] for I in D: if I == "BRK": stpOvr.append(ofst) stpOvr.append(I) ofst = [] 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 = [] if obj.CutPattern == "Line": # PNTSET = PathSurfaceSupport.pathGeomToLinesPointSet(obj, pathGeom, self.CutClimb, self.toolDiam, self.closedGap, self.gaps) PNTSET = PathSurfaceSupport.pathGeomToLinesPointSet(self, obj, pathGeom) elif obj.CutPattern == "ZigZag": # PNTSET = PathSurfaceSupport.pathGeomToZigzagPointSet(obj, pathGeom, self.CutClimb, self.toolDiam, self.closedGap, self.gaps) PNTSET = PathSurfaceSupport.pathGeomToZigzagPointSet(self, obj, pathGeom) 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 = [] 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) PNTSET = PathSurfaceSupport.pathGeomToCircularPointSet(self, obj, pathGeom) for so in range(0, len(PNTSET)): stpOvr = [] 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): (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): 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): Path.Log.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 = [] PRTS = SCANDATA[so] lenPRTS = len(PRTS) first = PRTS[0][0] # first point of arc/line stepover group 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), {})) 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 = PathUtils.simplify3dLine(points, tolerance=obj.LinearDeflection.Value) # 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 lastPrvStpLast = None for lyr in range(0, lenDP): odd = True # ZigZag directional switch lyrHasCmds = False actvSteps = 0 LYR = [] # if lyr > 0: # if prvStpLast is not None: # lastPrvStpLast = prvStpLast prvStpLast = None lyrDep = depthparams[lyr] Path.Log.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 = [] LMAX = [] 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 = [] stpOvrCmds = [] transCmds = [] 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: if i + 1 < lenAdjPrts: nxtStart = ADJPRTS[i + 1][0] prtsCmds.append(Path.Command("N (--Break)", {})) else: # Transition straight up to Safe Height if no more parts nxtStart = FreeCAD.Vector(last.x, last.y, obj.SafeHeight.Value) 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 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: 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: GCODE.extend(LYR) # save line commands GCODE.append(Path.Command("N (End of layer {})".format(lyr), {})) # Set previous depth prevDepth = lyrDep # Efor Path.Log.debug("Multi-pass op has {} layers (step downs).".format(lyr + 1)) return GCODE def _planarMultipassPreProcess(self, obj, LN, prvDep, layDep): ALL = [] PTS = [] 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 = [] 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 = [] 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 = [] 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 = [] 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: if p1 and p2: # 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) elif not p1: Path.Log.debug("_stepTransitionCmds() p1 is None") elif not p2: Path.Log.debug("_stepTransitionCmds() p2 is None") # 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 = [] 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): Path.Log.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): Path.Log.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: Path.Log.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 Path.Log.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)) Path.Log.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: # default to line-object 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.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.freecad.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 Path.Log.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 Path.Log.warning("Defaulting cutter to standard end mill.") return ocl.CylCutter(diam_1, (CEH + lenOfst)) 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 = PathUtils.simplify3dLine(pdcLine, tolerance=obj.LinearDeflection.Value) 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) # Eclass def SetupProperties(): """SetupProperties() ... Return list of properties required for operation.""" return [tup[1] for tup in ObjectSurface.opPropertyDefinitions(False)] def Create(name, obj=None, parentJob=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, parentJob) return obj