257 lines
12 KiB
Python
257 lines
12 KiB
Python
#***************************************************************************
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#* Copyright (c) 2011 Juergen Riegel <FreeCAD@juergen-riegel.net> *
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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 unittest
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import math
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import FreeCAD
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from FreeCAD import Base
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from FreeCAD import Units
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import Part
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import Sketcher
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import TestSketcherApp
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class TestLoft(unittest.TestCase):
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""" Loft Tests """
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def setUp(self):
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self.Doc = FreeCAD.newDocument("PartDesignTestLoft")
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def testSimpleAdditiveLoftCase(self):
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self.Body = self.Doc.addObject('PartDesign::Body','Body')
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self.ProfileSketch = self.Doc.addObject('Sketcher::SketchObject', 'ProfileSketch')
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self.Body.addObject(self.ProfileSketch)
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TestSketcherApp.CreateRectangleSketch(self.ProfileSketch, (0, 0), (1, 1))
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self.Doc.recompute()
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self.LoftSketch = self.Doc.addObject('Sketcher::SketchObject', 'LoftSketch')
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self.Body.addObject(self.LoftSketch)
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self.LoftSketch.MapMode = 'FlatFace'
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self.LoftSketch.AttachmentSupport = (self.Doc.XZ_Plane, [''])
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self.Doc.recompute()
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TestSketcherApp.CreateRectangleSketch(self.LoftSketch, (0, 1), (1, 1))
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self.Doc.recompute()
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self.AdditiveLoft = self.Doc.addObject("PartDesign::AdditiveLoft","AdditiveLoft")
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self.Body.addObject(self.AdditiveLoft)
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self.AdditiveLoft.Profile = self.ProfileSketch
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self.AdditiveLoft.Sections = [self.LoftSketch]
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self.Doc.recompute()
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self.assertAlmostEqual(self.AdditiveLoft.Shape.Volume, 1)
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def testSimpleSubtractiveLoftCase(self):
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self.Body = self.Doc.addObject('PartDesign::Body','Body')
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self.PadSketch = self.Doc.addObject('Sketcher::SketchObject', 'SketchPad')
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self.Body.addObject(self.PadSketch)
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TestSketcherApp.CreateRectangleSketch(self.PadSketch, (0, 0), (1, 1))
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self.Doc.recompute()
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self.Pad = self.Doc.addObject("PartDesign::Pad", "Pad")
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self.Body.addObject(self.Pad)
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self.Pad.Profile = self.PadSketch
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self.Pad.Length = 2
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self.Doc.recompute()
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self.ProfileSketch = self.Doc.addObject('Sketcher::SketchObject', 'ProfileSketch')
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self.Body.addObject(self.ProfileSketch)
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TestSketcherApp.CreateRectangleSketch(self.ProfileSketch, (0, 0), (1, 1))
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self.Doc.recompute()
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self.LoftSketch = self.Doc.addObject('Sketcher::SketchObject', 'LoftSketch')
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self.Body.addObject(self.LoftSketch)
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self.LoftSketch.MapMode = 'FlatFace'
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self.LoftSketch.AttachmentSupport = (self.Doc.XZ_Plane, [''])
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self.Doc.recompute()
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TestSketcherApp.CreateRectangleSketch(self.LoftSketch, (0, 1), (1, 1))
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self.Doc.recompute()
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self.SubtractiveLoft = self.Doc.addObject("PartDesign::SubtractiveLoft","SubtractiveLoft")
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self.Body.addObject(self.SubtractiveLoft)
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self.SubtractiveLoft.Profile = self.ProfileSketch
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self.SubtractiveLoft.Sections = [self.LoftSketch]
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self.Doc.recompute()
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self.assertAlmostEqual(self.SubtractiveLoft.Shape.Volume, 1)
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def testClosedAdditiveLoftCase(self):
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""" Test issue #6156: Loft tool "Closed" option not working """
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body = self.Doc.addObject('PartDesign::Body','Body')
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sketch1 = body.newObject('Sketcher::SketchObject','Sketch')
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sketch1.AttachmentSupport = (self.Doc.XZ_Plane,[''])
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sketch1.MapMode = 'FlatFace'
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sketch1.addGeometry(Part.Circle(Base.Vector(-40.0,0.0,0.0),Base.Vector(0,0,1),10.0), False)
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sketch1.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1))
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sketch1.addConstraint(Sketcher.Constraint('Diameter',0,20.0))
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sketch1.setDatum(1,Units.Quantity('20.000000 mm'))
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sketch1.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0))
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sketch1.setDatum(2,Units.Quantity('40.000000 mm'))
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sketch2 = body.newObject('Sketcher::SketchObject','Sketch001')
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sketch2.AttachmentSupport = (self.Doc.YZ_Plane,'')
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sketch2.MapMode = 'FlatFace'
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sketch2.addGeometry(Part.Circle(Base.Vector(-10.0,0.0,0.0),Base.Vector(0,0,1),10.0),False)
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sketch2.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1))
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sketch2.addConstraint(Sketcher.Constraint('Diameter',0,20.0))
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sketch2.setDatum(1,Units.Quantity('20.000000 mm'))
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sketch2.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0))
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sketch2.setDatum(2,Units.Quantity('40.000000 mm'))
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sketch3 = body.newObject('Sketcher::SketchObject','Sketch002')
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sketch3.AttachmentSupport = (self.Doc.getObject('YZ_Plane'),'')
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sketch3.MapMode = 'FlatFace'
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sketch3.addGeometry(Part.Circle(Base.Vector(40.0,0.0,0.0),Base.Vector(0,0,1),10.0),False)
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sketch3.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1))
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sketch3.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0))
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sketch3.setDatum(1,Units.Quantity('40.000000 mm'))
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sketch3.addConstraint(Sketcher.Constraint('Diameter',0,20.0))
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sketch3.setDatum(2,Units.Quantity('20.000000 mm'))
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sketch4 = body.newObject('Sketcher::SketchObject','Sketch003')
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sketch4.AttachmentSupport = (self.Doc.XZ_Plane,'')
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sketch4.MapMode = 'FlatFace'
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sketch4.addGeometry(Part.Circle(Base.Vector(40.0,0.0,0.0),Base.Vector(0,0,1),10.0),False)
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sketch4.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1))
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sketch4.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0))
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sketch4.setDatum(1,Units.Quantity('40.000000 mm'))
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sketch4.addConstraint(Sketcher.Constraint('Diameter',0,20.0))
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sketch4.setDatum(2,Units.Quantity('20.000000 mm'))
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self.Doc.recompute()
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loft = body.newObject('PartDesign::AdditiveLoft','AdditiveLoft')
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loft.Profile = sketch1
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loft.Sections = [sketch2, sketch4, sketch3]
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loft.Closed = True
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sketch1.Visibility = False
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sketch2.Visibility = False
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sketch3.Visibility = False
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sketch4.Visibility = False
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self.Doc.recompute()
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self.assertGreater(loft.Shape.Volume, 80000.0) # 85105.5788704151
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def testPadOnLoftBetweenCones(self):
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""" Test issue #15138 adapted from a script by chennes """
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body = self.Doc.addObject('PartDesign::Body', 'Body')
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body.Label = 'Body'
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coneBottomSketch = body.newObject('Sketcher::SketchObject', 'ConeBottomSketch')
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coneBottomSketch.AttachmentSupport = (self.Doc.getObject('XY_Plane'), [''])
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coneBottomSketch.MapMode = 'FlatFace'
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geoList = []
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geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000),
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Base.Vector(0.000000, 0.000000, 1.000000),
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25.000000))
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coneBottomSketch.addGeometry(geoList, False)
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del geoList
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constraintList = []
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coneBottomSketch.addConstraint(Sketcher.Constraint('Diameter', 0, 25.000000))
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coneBottomSketch.addConstraint(Sketcher.Constraint('Coincident', 0, 3, -1, 1))
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geoList = []
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geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000),
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Base.Vector(0.000000, 0.000000, 1.000000),
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40.000000))
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coneBottomSketch.addGeometry(geoList, False)
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del geoList
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constraintList = []
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coneBottomSketch.addConstraint(Sketcher.Constraint('Diameter', 1, 40.000000))
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coneBottomSketch.addConstraint(Sketcher.Constraint('Coincident', 1, 3, 0, 3))
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coneTopSketch = body.newObject('Sketcher::SketchObject', 'ConeTopSketch')
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coneTopSketch.AttachmentSupport = (self.Doc.getObject('XY_Plane'), [''])
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coneTopSketch.MapMode = 'FlatFace'
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geoList = []
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geoList.append(
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Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000),
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Base.Vector(0.000000, 0.000000, 1.000000),
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8.000000))
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coneTopSketch.addGeometry(geoList, False)
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del geoList
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constraintList = []
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coneTopSketch.addConstraint(Sketcher.Constraint('Diameter', 0, 8.000000))
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coneTopSketch.addConstraint(Sketcher.Constraint('Coincident', 0, 3, -1, 1))
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geoList = []
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geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000),
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Base.Vector(0.000000, 0.000000, 1.000000),
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15.000000))
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coneTopSketch.addGeometry(geoList, False)
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del geoList
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constraintList = []
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coneTopSketch.addConstraint(Sketcher.Constraint('Diameter', 1, 15.000000))
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coneTopSketch.addConstraint(Sketcher.Constraint('Coincident', 1, 3, 0, 3))
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coneTopSketch.AttachmentOffset = Base.Placement(Base.Vector(0, 0, 20),
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Base.Rotation(Base.Vector(0, 0, 1), 0))
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self.Doc.recompute()
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cone = body.newObject('PartDesign::AdditiveLoft', 'Cone')
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cone.Profile = coneBottomSketch
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cone.Sections = [(coneTopSketch, [''])]
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coneBottomSketch.Visibility = False
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coneTopSketch.Visibility = False
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self.Doc.recompute()
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pad = body.newObject('PartDesign::Pad', 'Pad')
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pad.Profile = (cone, ['Face3', ])
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pad.Length = 10.000000
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pad.TaperAngle = 0.000000
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pad.UseCustomVector = 0
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pad.Direction = (0, 0, 1)
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pad.ReferenceAxis = None
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pad.AlongSketchNormal = 1
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pad.Type = 0
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pad.UpToFace = None
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pad.Reversed = False
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pad.Midplane = 0
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pad.Offset = 0
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cone.Visibility = True
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self.Doc.recompute()
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outerConeBottomRadius = 40 / 2
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outerConeTopRadius = 15 / 2
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innerConeBottomRadius = 25 / 2
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innerConeTopRadius = 8 / 2
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coneHeight = 20.0
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padHeight = 10.0
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# Frustum volumes
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outerConeVolume = 1.0 / 3.0 * math.pi * coneHeight * (
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outerConeBottomRadius ** 2 + outerConeTopRadius ** 2 +
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outerConeBottomRadius * outerConeTopRadius )
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innerConeVolume = 1.0 / 3.0 * math.pi * coneHeight * (
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innerConeBottomRadius ** 2 + innerConeTopRadius ** 2 +
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innerConeBottomRadius * innerConeTopRadius )
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frustumVolume = outerConeVolume - innerConeVolume
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topArea = math.pi * (outerConeTopRadius ** 2) - math.pi * (innerConeTopRadius ** 2)
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bottomArea = math.pi * (outerConeBottomRadius ** 2) - math.pi * (innerConeBottomRadius ** 2)
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padVolume = topArea * padHeight
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self.assertEqual(len(cone.Shape.Faces), 4) # Bottom, Inner, Top, Outer
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self.assertAlmostEqual(cone.Shape.Faces[2].Area, topArea)
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self.assertAlmostEqual(cone.Shape.Faces[0].Area, bottomArea)
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self.assertAlmostEqual(cone.Shape.Volume, frustumVolume)
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self.assertAlmostEqual(pad.Shape.Volume, frustumVolume + padVolume) # contains volume of previous in Body
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self.assertAlmostEqual(body.Shape.Volume, frustumVolume + padVolume) # Overall body volume matches
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def tearDown(self):
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#closing doc
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FreeCAD.closeDocument("PartDesignTestLoft")
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# print ("omit closing document for debugging")
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