195 lines
8.8 KiB
Python
195 lines
8.8 KiB
Python
# -*- coding: utf-8 -*-
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# ***************************************************************************
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# * *
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# * Copyright (c) 2017 sliptonic <shopinthewoods@gmail.com> *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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import FreeCAD
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import Part
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import PathScripts.PathLog as PathLog
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import PathScripts.PathOp as PathOp
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import PathScripts.PathPocketBase as PathPocketBase
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import PathScripts.PathUtils as PathUtils
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import TechDraw
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import sys
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from PathScripts.PathGeom import PathGeom
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from PySide import QtCore
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__title__ = "Path Pocket Shape Operation"
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__author__ = "sliptonic (Brad Collette)"
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__url__ = "http://www.freecadweb.org"
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__doc__ = "Class and implementation of shape based Pocket operation."
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if True:
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PathLog.setLevel(PathLog.Level.DEBUG, PathLog.thisModule())
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PathLog.trackModule(PathLog.thisModule())
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else:
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PathLog.setLevel(PathLog.Level.INFO, PathLog.thisModule())
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# Qt tanslation handling
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def translate(context, text, disambig=None):
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return QtCore.QCoreApplication.translate(context, text, disambig)
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class ObjectPocket(PathPocketBase.ObjectPocket):
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'''Proxy object for Pocket operation.'''
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def initPocketOp(self, obj):
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'''initPocketOp(obj) ... setup receiver'''
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pass
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def pocketInvertExtraOffset(self):
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return False
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def combineConnectedShapes(self, shapes):
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done = False
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while not done:
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done = True
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combined = []
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for shape in shapes:
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connected = [f for f in combined if PathGeom.isRoughly(shape.distToShape(f)[0], 0,0)]
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if connected:
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combined = [f for f in combined if f not in connected]
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connected.append(shape)
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combined.append(Part.makeCompound(connected))
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done = False
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else:
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combined.append(shape)
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shapes = combined
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return shapes
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def areaOpShapes(self, obj):
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'''areaOpShapes(obj) ... return shapes representing the solids to be removed.'''
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PathLog.track()
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if obj.Base:
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PathLog.debug("base items exist. Processing...")
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removalshapes = []
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horizontal = []
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vertical = []
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for o in obj.Base:
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PathLog.debug("Base item: {}".format(o))
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base = o[0]
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for sub in o[1]:
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if "Face" in sub:
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face = base.Shape.getElement(sub)
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if type(face.Surface) == Part.Plane and PathGeom.isVertical(face.Surface.Axis):
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# it's a flat horizontal face
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horizontal.append(face)
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elif type(face.Surface) == Part.Cylinder and PathGeom.isVertical(face.Surface.Axis):
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# vertical cylinder wall
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if any(e.isClosed() for e in face.Edges):
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# complete cylinder
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circle = Part.makeCircle(face.Surface.Radius, face.Surface.Center)
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disk = Part.Face(Part.Wire(circle))
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horizontal.append(disk)
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else:
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# partial cylinder wall
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vertical.append(face)
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elif type(face.Surface) == Part.Plane and PathGeom.isHorizontal(face.Surface.Axis):
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vertical.append(face)
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else:
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PathLog.error(translate('PathPocket', "Pocket does not support shape %s.%s") % (base.Label, sub))
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vertical = self.combineConnectedShapes(vertical)
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vWires = [TechDraw.findShapeOutline(shape, 1, FreeCAD.Vector(0, 0, 1)) for shape in vertical]
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for wire in vWires:
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face = Part.Face(wire)
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if PathGeom.isRoughly(face.Area, 0):
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PathLog.error(translate('PathPocket', 'Vertical faces do not form a loop - ignoring'))
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else:
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horizontal.append(face)
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# move all horizontal faces to FinalDepth
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for face in horizontal:
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face.translate(FreeCAD.Vector(0, 0, obj.FinalDepth.Value - face.BoundBox.ZMin))
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# check all faces and see if they are touching/overlapping and combine those into a compound
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horizontal = self.combineConnectedShapes(horizontal)
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# extrude all faces up to StartDepth and those are the removal shapes
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extent = FreeCAD.Vector(0, 0, obj.StartDepth.Value - obj.FinalDepth.Value)
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removalshapes = [(face.extrude(extent), False) for face in horizontal]
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else: # process the job base object as a whole
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PathLog.debug("processing the whole job base object")
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self.outline = Part.Face(TechDraw.findShapeOutline(self.baseobject.Shape, 1, FreeCAD.Vector(0, 0, 1)))
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stockBB = self.stock.Shape.BoundBox
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self.outline.translate(FreeCAD.Vector(0, 0, stockBB.ZMin - 1))
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self.body = self.outline.extrude(FreeCAD.Vector(0, 0, stockBB.ZLength + 2))
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obj.removalshape = self.stock.Shape.cut(self.body)
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obj.removalshape.tessellate(0.1)
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removalshapes = [(obj.removalshape, False)]
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return removalshapes
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def areaOpSetDefaultValues(self, obj):
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'''areaOpSetDefaultValues(obj) ... set default values'''
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obj.StepOver = 100
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obj.ZigZagAngle = 45
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def areaOpOnChanged(self, obj, prop):
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if 'Base' == prop and obj.Base and not 'Restore' in obj.State:
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PathLog.track(obj.Label, prop)
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zmin = -sys.maxint
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zmax = zmin
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for base, sublist in obj.Base:
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bb = base.Shape.BoundBox # parent boundbox
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for sub in sublist:
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subobj = base.Shape.getElement(sub)
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fbb = subobj.BoundBox # feature boundbox
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if fbb.ZMax == fbb.ZMin and fbb.ZMax == bb.ZMax: # top face
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finalDepth = bb.ZMin
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elif fbb.ZMax > fbb.ZMin and fbb.ZMax == bb.ZMax: # vertical face, full cut
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finalDepth = fbb.ZMin
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elif fbb.ZMax > fbb.ZMin and fbb.ZMin > bb.ZMin: # internal vertical wall
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finalDepth = fbb.ZMin
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elif fbb.ZMax == fbb.ZMin and fbb.ZMax > bb.ZMin: # face/shelf
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finalDepth = fbb.ZMin
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else: # catch all
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finalDepth = bb.ZMin
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zmin = max(zmin, finalDepth)
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zmax = max(zmax, bb.ZMax)
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PathLog.debug("%s: final=%.2f, max=%.2f" % (sub, zmin, zmax))
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PathLog.debug("zmin=%.2f, zmax=%.2f" % (zmin, zmax))
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if not PathGeom.isRoughly(zmin, obj.FinalDepth.Value):
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obj.FinalDepth = zmin
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if not PathGeom.isRoughly(zmax, obj.StartDepth.Value):
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obj.StartDepth = zmax
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clearance = zmax + 5.0
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safe = zmax + 3
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if not PathGeom.isRoughly(clearance, obj.ClearanceHeight.Value):
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obj.CearanceHeight = clearance
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if not PathGeom.isRoughly(safe, obj.SafeHeight.Value):
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obj.SafeHeight = safe
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def Create(name):
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'''Create(name) ... Creates and returns a Pocket operation.'''
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obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython", name)
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proxy = ObjectPocket(obj)
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return obj
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