289 lines
12 KiB
Python
289 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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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 PathScripts.PathLog as PathLog
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import PathScripts.PathOp as PathOp
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import PathScripts.PathUtils as PathUtils
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from PySide import QtCore
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# lazily loaded modules
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from lazy_loader.lazy_loader import LazyLoader
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Draft = LazyLoader("Draft", globals(), "Draft")
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Part = LazyLoader("Part", globals(), "Part")
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DraftGeomUtils = LazyLoader("DraftGeomUtils", globals(), "DraftGeomUtils")
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__title__ = "Path Circular Holes Base Operation"
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__author__ = "sliptonic (Brad Collette)"
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__url__ = "https://www.freecadweb.org"
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__doc__ = "Base class an implementation for operations on circular holes."
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# Qt translation 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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PathLog.setLevel(PathLog.Level.INFO, PathLog.thisModule())
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# PathLog.trackModule(PathLog.thisModule())
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class ObjectOp(PathOp.ObjectOp):
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"""Base class for proxy objects of all operations on circular holes."""
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def opFeatures(self, obj):
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"""opFeatures(obj) ... calls circularHoleFeatures(obj) and ORs in the standard features required for processing circular holes.
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Do not overwrite, implement circularHoleFeatures(obj) instead"""
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return (
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PathOp.FeatureTool
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| PathOp.FeatureDepths
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| PathOp.FeatureHeights
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| PathOp.FeatureBaseFaces
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| self.circularHoleFeatures(obj)
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| PathOp.FeatureCoolant
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)
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def circularHoleFeatures(self, obj):
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"""circularHoleFeatures(obj) ... overwrite to add operations specific features.
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Can safely be overwritten by subclasses."""
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return 0
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def initOperation(self, obj):
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"""initOperation(obj) ... adds Disabled properties and calls initCircularHoleOperation(obj).
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Do not overwrite, implement initCircularHoleOperation(obj) instead."""
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obj.addProperty(
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"App::PropertyStringList",
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"Disabled",
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"Base",
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QtCore.QT_TRANSLATE_NOOP("Path", "List of disabled features"),
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)
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self.initCircularHoleOperation(obj)
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def initCircularHoleOperation(self, obj):
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"""initCircularHoleOperation(obj) ... overwrite if the subclass needs initialisation.
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Can safely be overwritten by subclasses."""
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pass
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def holeDiameter(self, obj, base, sub):
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"""holeDiameter(obj, base, sub) ... returns the diameter of the specified hole."""
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try:
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shape = base.Shape.getElement(sub)
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if shape.ShapeType == "Vertex":
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return 0
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if shape.ShapeType == "Edge" and type(shape.Curve) == Part.Circle:
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return shape.Curve.Radius * 2
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if shape.ShapeType == "Face":
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for i in range(len(shape.Edges)):
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if (
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type(shape.Edges[i].Curve) == Part.Circle
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and shape.Edges[i].Curve.Radius * 2
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< shape.BoundBox.XLength * 1.1
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and shape.Edges[i].Curve.Radius * 2
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> shape.BoundBox.XLength * 0.9
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):
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return shape.Edges[i].Curve.Radius * 2
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# for all other shapes the diameter is just the dimension in X.
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# This may be inaccurate as the BoundBox is calculated on the tessellated geometry
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PathLog.warning(
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translate(
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"Path",
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"Hole diameter may be inaccurate due to tessellation on face. Consider selecting hole edge.",
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)
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)
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return shape.BoundBox.XLength
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except Part.OCCError as e:
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PathLog.error(e)
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return 0
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def holePosition(self, obj, base, sub):
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"""holePosition(obj, base, sub) ... returns a Vector for the position defined by the given features.
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Note that the value for Z is set to 0."""
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try:
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shape = base.Shape.getElement(sub)
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if shape.ShapeType == "Vertex":
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return FreeCAD.Vector(shape.X, shape.Y, 0)
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if shape.ShapeType == "Edge" and hasattr(shape.Curve, "Center"):
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return FreeCAD.Vector(shape.Curve.Center.x, shape.Curve.Center.y, 0)
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if shape.ShapeType == "Face":
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if hasattr(shape.Surface, "Center"):
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return FreeCAD.Vector(
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shape.Surface.Center.x, shape.Surface.Center.y, 0
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)
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if len(shape.Edges) == 1 and type(shape.Edges[0].Curve) == Part.Circle:
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return shape.Edges[0].Curve.Center
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except Part.OCCError as e:
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PathLog.error(e)
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PathLog.error(
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translate(
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"Path",
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"Feature %s.%s cannot be processed as a circular hole - please remove from Base geometry list.",
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)
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% (base.Label, sub)
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)
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return None
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def isHoleEnabled(self, obj, base, sub):
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"""isHoleEnabled(obj, base, sub) ... return true if hole is enabled."""
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name = "%s.%s" % (base.Name, sub)
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return name not in obj.Disabled
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def opExecute(self, obj):
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"""opExecute(obj) ... processes all Base features and Locations and collects
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them in a list of positions and radii which is then passed to circularHoleExecute(obj, holes).
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If no Base geometries and no Locations are present, the job's Base is inspected and all
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drillable features are added to Base. In this case appropriate values for depths are also
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calculated and assigned.
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Do not overwrite, implement circularHoleExecute(obj, holes) instead."""
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PathLog.track()
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def haveLocations(self, obj):
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if PathOp.FeatureLocations & self.opFeatures(obj):
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return len(obj.Locations) != 0
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return False
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holes = []
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for base, subs in obj.Base:
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for sub in subs:
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PathLog.debug("processing {} in {}".format(sub, base.Name))
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if self.isHoleEnabled(obj, base, sub):
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pos = self.holePosition(obj, base, sub)
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if pos:
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holes.append(
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{
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"x": pos.x,
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"y": pos.y,
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"r": self.holeDiameter(obj, base, sub),
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}
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)
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if haveLocations(self, obj):
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for location in obj.Locations:
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holes.append({"x": location.x, "y": location.y, "r": 0})
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if len(holes) > 0:
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self.circularHoleExecute(obj, holes)
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def circularHoleExecute(self, obj, holes):
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"""circularHoleExecute(obj, holes) ... implement processing of holes.
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holes is a list of dictionaries with 'x', 'y' and 'r' specified for each hole.
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Note that for Vertexes, non-circular Edges and Locations r=0.
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Must be overwritten by subclasses."""
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pass
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def findAllHoles(self, obj):
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"""findAllHoles(obj) ... find all holes of all base models and assign as features."""
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PathLog.track()
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if not self.getJob(obj):
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return
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features = []
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for base in self.model:
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features.extend(self.findHoles(obj, base))
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obj.Base = features
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obj.Disabled = []
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def findHoles(self, obj, baseobject):
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"""findHoles(obj, baseobject) ... inspect baseobject and identify all features that resemble a straight cricular hole."""
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shape = baseobject.Shape
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PathLog.track("obj: {} shape: {}".format(obj, shape))
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holelist = []
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features = []
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# tooldiameter = float(obj.ToolController.Proxy.getTool(obj.ToolController).Diameter)
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tooldiameter = None
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PathLog.debug(
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"search for holes larger than tooldiameter: {}: ".format(tooldiameter)
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)
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if DraftGeomUtils.isPlanar(shape):
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PathLog.debug("shape is planar")
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for i in range(len(shape.Edges)):
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candidateEdgeName = "Edge" + str(i + 1)
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e = shape.getElement(candidateEdgeName)
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if PathUtils.isDrillable(shape, e, tooldiameter):
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PathLog.debug(
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"edge candidate: {} (hash {})is drillable ".format(
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e, e.hashCode()
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)
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)
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x = e.Curve.Center.x
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y = e.Curve.Center.y
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diameter = e.BoundBox.XLength
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holelist.append(
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{
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"featureName": candidateEdgeName,
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"feature": e,
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"x": x,
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"y": y,
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"d": diameter,
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"enabled": True,
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}
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)
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features.append((baseobject, candidateEdgeName))
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PathLog.debug(
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"Found hole feature %s.%s"
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% (baseobject.Label, candidateEdgeName)
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)
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else:
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PathLog.debug("shape is not planar")
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for i in range(len(shape.Faces)):
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candidateFaceName = "Face" + str(i + 1)
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f = shape.getElement(candidateFaceName)
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if PathUtils.isDrillable(shape, f, tooldiameter):
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PathLog.debug("face candidate: {} is drillable ".format(f))
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if hasattr(f.Surface, "Center"):
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x = f.Surface.Center.x
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y = f.Surface.Center.y
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diameter = f.BoundBox.XLength
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else:
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center = f.Edges[0].Curve.Center
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x = center.x
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y = center.y
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diameter = f.Edges[0].Curve.Radius * 2
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holelist.append(
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{
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"featureName": candidateFaceName,
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"feature": f,
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"x": x,
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"y": y,
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"d": diameter,
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"enabled": True,
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}
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)
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features.append((baseobject, candidateFaceName))
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PathLog.debug(
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"Found hole feature %s.%s"
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% (baseobject.Label, candidateFaceName)
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)
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PathLog.debug("holes found: {}".format(holelist))
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return features
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