# -*- coding: utf-8 -*- # *************************************************************************** # * Copyright (c) 2017 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 * # * * # *************************************************************************** import FreeCAD import PathScripts.PathGeom as PathGeom import PathScripts.PathLog as PathLog import PathScripts.PathOp as PathOp import PathScripts.PathPocketBase as PathPocketBase from PySide import QtCore # lazily loaded modules from lazy_loader.lazy_loader import LazyLoader Part = LazyLoader('Part', globals(), 'Part') TechDraw = LazyLoader('TechDraw', globals(), 'TechDraw') math = LazyLoader('math', globals(), 'math') PathUtils = LazyLoader('PathScripts.PathUtils', globals(), 'PathScripts.PathUtils') FeatureExtensions = LazyLoader('PathScripts.PathFeatureExtensions', globals(), 'PathScripts.PathFeatureExtensions') __title__ = "Path Pocket Shape Operation" __author__ = "sliptonic (Brad Collette)" __url__ = "https://www.freecadweb.org" __doc__ = "Class and implementation of shape based Pocket operation." 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 ObjectPocket(PathPocketBase.ObjectPocket): '''Proxy object for Pocket operation.''' def areaOpFeatures(self, obj): return super(self.__class__, self).areaOpFeatures(obj) | PathOp.FeatureLocations def initPocketOp(self, obj): '''initPocketOp(obj) ... setup receiver''' if not hasattr(obj, 'UseOutline'): obj.addProperty('App::PropertyBool', 'UseOutline', 'Pocket', QtCore.QT_TRANSLATE_NOOP('PathPocketShape', 'Uses the outline of the base geometry.')) FeatureExtensions.initialize_properties(obj) def areaOpOnDocumentRestored(self, obj): '''opOnDocumentRestored(obj) ... adds the UseOutline property if it doesn't exist.''' self.initPocketOp(obj) def pocketInvertExtraOffset(self): return False def areaOpSetDefaultValues(self, obj, job): '''areaOpSetDefaultValues(obj, job) ... set default values''' obj.StepOver = 100 obj.ZigZagAngle = 45 obj.UseOutline = False FeatureExtensions.set_default_property_values(obj, job) def areaOpShapes(self, obj): '''areaOpShapes(obj) ... return shapes representing the solids to be removed.''' PathLog.track() self.removalshapes = [] # self.isDebug = True if PathLog.getLevel(PathLog.thisModule()) == 4 else False self.removalshapes = [] avoidFeatures = list() # Get extensions and identify faces to avoid extensions = FeatureExtensions.getExtensions(obj) for e in extensions: if e.avoid: avoidFeatures.append(e.feature) if obj.Base: PathLog.debug('base items exist. Processing...') self.horiz = [] self.vert = [] for (base, subList) in obj.Base: for sub in subList: if 'Face' in sub: if sub not in avoidFeatures and not self.clasifySub(base, sub): PathLog.error(translate('PathPocket', 'Pocket does not support shape %s.%s') % (base.Label, sub)) # Convert horizontal faces to use outline only if requested if obj.UseOutline and self.horiz: horiz = [Part.Face(f.Wire1) for f in self.horiz] self.horiz = horiz # Check if selected vertical faces form a loop if len(self.vert) > 0: self.vertical = PathGeom.combineConnectedShapes(self.vert) self.vWires = [TechDraw.findShapeOutline(shape, 1, FreeCAD.Vector(0, 0, 1)) for shape in self.vertical] for wire in self.vWires: w = PathGeom.removeDuplicateEdges(wire) face = Part.Face(w) # face.tessellate(0.1) if PathGeom.isRoughly(face.Area, 0): PathLog.error(translate('PathPocket', 'Vertical faces do not form a loop - ignoring')) else: self.horiz.append(face) # Add faces for extensions self.exts = [] # pylint: disable=attribute-defined-outside-init for ext in extensions: if not ext.avoid: wire = ext.getWire() if wire: faces = ext.getExtensionFaces(wire) for f in faces: self.horiz.append(f) self.exts.append(f) # check all faces and see if they are touching/overlapping and combine and simplify self.horizontal = PathGeom.combineHorizontalFaces(self.horiz) # Move all faces to final depth before extrusion for h in self.horizontal: h.translate(FreeCAD.Vector(0.0, 0.0, obj.FinalDepth.Value - h.BoundBox.ZMin)) # extrude all faces up to StartDepth and those are the removal shapes extent = FreeCAD.Vector(0, 0, obj.StartDepth.Value - obj.FinalDepth.Value) self.removalshapes = [(face.removeSplitter().extrude(extent), False) for face in self.horizontal] else: # process the job base object as a whole PathLog.debug("processing the whole job base object") self.outlines = [Part.Face(TechDraw.findShapeOutline(base.Shape, 1, FreeCAD.Vector(0, 0, 1))) for base in self.model] stockBB = self.stock.Shape.BoundBox self.bodies = [] for outline in self.outlines: outline.translate(FreeCAD.Vector(0, 0, stockBB.ZMin - 1)) body = outline.extrude(FreeCAD.Vector(0, 0, stockBB.ZLength + 2)) self.bodies.append(body) self.removalshapes.append((self.stock.Shape.cut(body), False)) # Tessellate all working faces # for (shape, hole) in self.removalshapes: # shape.tessellate(0.05) # originally 0.1 if self.removalshapes: obj.removalshape = Part.makeCompound([tup[0] for tup in self.removalshapes]) return self.removalshapes # Support methods def isVerticalExtrusionFace(self, face): fBB = face.BoundBox if PathGeom.isRoughly(fBB.ZLength, 0.0): return False extr = face.extrude(FreeCAD.Vector(0.0, 0.0, fBB.ZLength)) if hasattr(extr, "Volume"): if PathGeom.isRoughly(extr.Volume, 0.0): return True return False def clasifySub(self, bs, sub): '''clasifySub(bs, sub)... Given a base and a sub-feature name, returns True if the sub-feature is a horizontally oriented flat face. ''' face = bs.Shape.getElement(sub) if type(face.Surface) == Part.Plane: PathLog.debug('type() == Part.Plane') if PathGeom.isVertical(face.Surface.Axis): PathLog.debug(' -isVertical()') # it's a flat horizontal face self.horiz.append(face) return True elif PathGeom.isHorizontal(face.Surface.Axis): PathLog.debug(' -isHorizontal()') self.vert.append(face) return True else: return False elif type(face.Surface) == Part.Cylinder and PathGeom.isVertical(face.Surface.Axis): PathLog.debug('type() == Part.Cylinder') # vertical cylinder wall if any(e.isClosed() for e in face.Edges): PathLog.debug(' -e.isClosed()') # complete cylinder circle = Part.makeCircle(face.Surface.Radius, face.Surface.Center) disk = Part.Face(Part.Wire(circle)) disk.translate(FreeCAD.Vector(0, 0, face.BoundBox.ZMin - disk.BoundBox.ZMin)) self.horiz.append(disk) return True else: PathLog.debug(' -none isClosed()') # partial cylinder wall self.vert.append(face) return True elif type(face.Surface) == Part.SurfaceOfExtrusion: # extrusion wall PathLog.debug('type() == Part.SurfaceOfExtrusion') # Save face to self.horiz for processing or display error if self.isVerticalExtrusionFace(face): self.vert.append(face) return True else: PathLog.error(translate("Path", "Failed to identify vertical face from {}.".format(sub))) else: PathLog.debug(' -type(face.Surface): {}'.format(type(face.Surface))) return False # Eclass def SetupProperties(): setup = PathPocketBase.SetupProperties() # Add properties from PocketBase module setup.extend(FeatureExtensions.SetupProperties()) # Add properties from Extensions Feature # Add properties initialized here in PocketShape setup.append('UseOutline') return setup def Create(name, obj=None, parentJob=None): '''Create(name) ... Creates and returns a Pocket operation.''' if obj is None: obj = FreeCAD.ActiveDocument.addObject('Path::FeaturePython', name) obj.Proxy = ObjectPocket(obj, name, parentJob) return obj return obj