# -*- coding: utf-8 -*- # *************************************************************************** # * Copyright (c) 2019 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 * # * * # *************************************************************************** from PySide.QtCore import QT_TRANSLATE_NOOP import FreeCAD import Path import Path.Base.Util as PathUtil import Path.Dressup.Utils as PathDressup import Path.Main.Stock as PathStock import PathScripts.PathUtils as PathUtils 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()) translate = FreeCAD.Qt.translate def _vstr(v): if v: return "(%.2f, %.2f, %.2f)" % (v.x, v.y, v.z) return "-" class DressupPathBoundary(object): def __init__(self, obj, base, job): obj.addProperty( "App::PropertyLink", "Base", "Base", QT_TRANSLATE_NOOP("App::Property", "The base path to modify"), ) obj.Base = base obj.addProperty( "App::PropertyLink", "Stock", "Boundary", QT_TRANSLATE_NOOP( "App::Property", "Solid object to be used to limit the generated Path.", ), ) obj.Stock = PathStock.CreateFromBase(job) obj.addProperty( "App::PropertyBool", "Inside", "Boundary", QT_TRANSLATE_NOOP( "App::Property", "Determines if Boundary describes an inclusion or exclusion mask.", ), ) obj.Inside = True self.obj = obj self.safeHeight = None self.clearanceHeight = None def dumps(self): return None def loads(self, state): return None def onDocumentRestored(self, obj): self.obj = obj def onDelete(self, obj, args): if obj.Base: job = PathUtils.findParentJob(obj) if job: job.Proxy.addOperation(obj.Base, obj) if obj.Base.ViewObject: obj.Base.ViewObject.Visibility = True obj.Base = None if obj.Stock: obj.Document.removeObject(obj.Stock.Name) obj.Stock = None return True def execute(self, obj): pb = PathBoundary(obj.Base, obj.Stock.Shape, obj.Inside) obj.Path = pb.execute() # Eclass class PathBoundary: """class PathBoundary... This class requires a base operation, boundary shape, and optional inside boolean (default is True). The `execute()` method returns a Path object with path commands limited to cut paths inside or outside the provided boundary shape. """ def __init__(self, baseOp, boundaryShape, inside=True): self.baseOp = baseOp self.boundary = boundaryShape self.inside = inside self.safeHeight = None self.clearanceHeight = None self.strG0ZsafeHeight = None self.strG0ZclearanceHeight = None def boundaryCommands(self, begin, end, verticalFeed): Path.Log.track(_vstr(begin), _vstr(end)) if end and Path.Geom.pointsCoincide(begin, end): return [] cmds = [] if begin.z < self.safeHeight: cmds.append(self.strG0ZsafeHeight) if begin.z < self.clearanceHeight: cmds.append(self.strG0ZclearanceHeight) if end: cmds.append(Path.Command("G0", {"X": end.x, "Y": end.y})) if end.z < self.clearanceHeight: cmds.append(Path.Command("G0", {"Z": max(self.safeHeight, end.z)})) if end.z < self.safeHeight: cmds.append(Path.Command("G1", {"Z": end.z, "F": verticalFeed})) return cmds def execute(self): if ( not self.baseOp or not self.baseOp.isDerivedFrom("Path::Feature") or not self.baseOp.Path ): return None path = PathUtils.getPathWithPlacement(self.baseOp) if len(path.Commands) == 0: Path.Log.warning("No Path Commands for %s" % self.baseOp.Label) return [] tc = PathDressup.toolController(self.baseOp) self.safeHeight = float(PathUtil.opProperty(self.baseOp, "SafeHeight")) self.clearanceHeight = float(PathUtil.opProperty(self.baseOp, "ClearanceHeight")) self.strG0ZsafeHeight = Path.Command( # was a Feed rate with G1 "G0", {"Z": self.safeHeight, "F": tc.VertRapid.Value} ) self.strG0ZclearanceHeight = Path.Command("G0", {"Z": self.clearanceHeight}) cmd = path.Commands[0] pos = cmd.Placement.Base # bogus m/c position to create first edge bogusX = True bogusY = True commands = [cmd] lastExit = None for cmd in path.Commands[1:]: if cmd.Name in Path.Geom.CmdMoveAll: if bogusX: bogusX = "X" not in cmd.Parameters if bogusY: bogusY = "Y" not in cmd.Parameters edge = Path.Geom.edgeForCmd(cmd, pos) if edge: inside = edge.common(self.boundary).Edges outside = edge.cut(self.boundary).Edges if not self.inside: # UI "inside boundary" param tmp = inside inside = outside outside = tmp # it's really a shame that one cannot trust the sequence and/or # orientation of edges if 1 == len(inside) and 0 == len(outside): Path.Log.track(_vstr(pos), _vstr(lastExit), " + ", cmd) # cmd fully included by boundary if lastExit: if not ( bogusX or bogusY ): # don't insert false paths based on bogus m/c position commands.extend( self.boundaryCommands(lastExit, pos, tc.VertFeed.Value) ) lastExit = None commands.append(cmd) pos = Path.Geom.commandEndPoint(cmd, pos) elif 0 == len(inside) and 1 == len(outside): Path.Log.track(_vstr(pos), _vstr(lastExit), " - ", cmd) # cmd fully excluded by boundary if not lastExit: lastExit = pos pos = Path.Geom.commandEndPoint(cmd, pos) else: Path.Log.track(_vstr(pos), _vstr(lastExit), len(inside), len(outside), cmd) # cmd pierces boundary while inside or outside: ie = [e for e in inside if Path.Geom.edgeConnectsTo(e, pos)] Path.Log.track(ie) if ie: e = ie[0] LastPt = e.valueAt(e.LastParameter) flip = Path.Geom.pointsCoincide(pos, LastPt) newPos = e.valueAt(e.FirstParameter) if flip else LastPt # inside edges are taken at this point (see swap of inside/outside # above - so we can just connect the dots ... if lastExit: if not (bogusX or bogusY): commands.extend( self.boundaryCommands(lastExit, pos, tc.VertFeed.Value) ) lastExit = None Path.Log.track(e, flip) if not ( bogusX or bogusY ): # don't insert false paths based on bogus m/c position commands.extend( Path.Geom.cmdsForEdge( e, flip, False, 50, tc.HorizFeed.Value, tc.VertFeed.Value, ) ) inside.remove(e) pos = newPos lastExit = newPos else: oe = [e for e in outside if Path.Geom.edgeConnectsTo(e, pos)] Path.Log.track(oe) if oe: e = oe[0] ptL = e.valueAt(e.LastParameter) flip = Path.Geom.pointsCoincide(pos, ptL) newPos = e.valueAt(e.FirstParameter) if flip else ptL # outside edges are never taken at this point (see swap of # inside/outside above) - so just move along ... outside.remove(e) pos = newPos else: Path.Log.error("huh?") import Part Part.show(Part.Vertex(pos), "pos") for e in inside: Part.show(e, "ei") for e in outside: Part.show(e, "eo") raise Exception("This is not supposed to happen") # Eif # Eif # Ewhile # Eif # pos = Path.Geom.commandEndPoint(cmd, pos) # Eif else: Path.Log.track("no-move", cmd) commands.append(cmd) if lastExit: commands.extend(self.boundaryCommands(lastExit, None, tc.VertFeed.Value)) lastExit = None Path.Log.track(commands) return Path.Path(commands) # Eclass def Create(base, name="DressupPathBoundary"): """Create(base, name='DressupPathBoundary') ... creates a dressup limiting base's Path to a boundary.""" if not base.isDerivedFrom("Path::Feature"): Path.Log.error( translate("CAM_DressupPathBoundary", "The selected object is not a path") + "\n" ) return None obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython", name) job = PathUtils.findParentJob(base) obj.Proxy = DressupPathBoundary(obj, base, job) job.Proxy.addOperation(obj, base, True) return obj