#*************************************************************************** #* Copyright (c) 2011 Juergen Riegel * #* * #* 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 unittest import math import FreeCAD from FreeCAD import Base from FreeCAD import Units import Part import Sketcher import TestSketcherApp class TestLoft(unittest.TestCase): def setUp(self): self.Doc = FreeCAD.newDocument("PartDesignTestLoft") def testSimpleAdditiveLoftCase(self): self.Body = self.Doc.addObject('PartDesign::Body','Body') self.ProfileSketch = self.Doc.addObject('Sketcher::SketchObject', 'ProfileSketch') self.Body.addObject(self.ProfileSketch) TestSketcherApp.CreateRectangleSketch(self.ProfileSketch, (0, 0), (1, 1)) self.Doc.recompute() self.LoftSketch = self.Doc.addObject('Sketcher::SketchObject', 'LoftSketch') self.Body.addObject(self.LoftSketch) self.LoftSketch.MapMode = 'FlatFace' self.LoftSketch.AttachmentSupport = (self.Doc.XZ_Plane, ['']) self.Doc.recompute() TestSketcherApp.CreateRectangleSketch(self.LoftSketch, (0, 1), (1, 1)) self.Doc.recompute() self.AdditiveLoft = self.Doc.addObject("PartDesign::AdditiveLoft","AdditiveLoft") self.Body.addObject(self.AdditiveLoft) self.AdditiveLoft.Profile = self.ProfileSketch self.AdditiveLoft.Sections = [self.LoftSketch] self.Doc.recompute() self.assertAlmostEqual(self.AdditiveLoft.Shape.Volume, 1) def testSimpleSubtractiveLoftCase(self): self.Body = self.Doc.addObject('PartDesign::Body','Body') self.PadSketch = self.Doc.addObject('Sketcher::SketchObject', 'SketchPad') self.Body.addObject(self.PadSketch) TestSketcherApp.CreateRectangleSketch(self.PadSketch, (0, 0), (1, 1)) self.Doc.recompute() self.Pad = self.Doc.addObject("PartDesign::Pad", "Pad") self.Body.addObject(self.Pad) self.Pad.Profile = self.PadSketch self.Pad.Length = 2 self.Doc.recompute() self.ProfileSketch = self.Doc.addObject('Sketcher::SketchObject', 'ProfileSketch') self.Body.addObject(self.ProfileSketch) TestSketcherApp.CreateRectangleSketch(self.ProfileSketch, (0, 0), (1, 1)) self.Doc.recompute() self.LoftSketch = self.Doc.addObject('Sketcher::SketchObject', 'LoftSketch') self.Body.addObject(self.LoftSketch) self.LoftSketch.MapMode = 'FlatFace' self.LoftSketch.AttachmentSupport = (self.Doc.XZ_Plane, ['']) self.Doc.recompute() TestSketcherApp.CreateRectangleSketch(self.LoftSketch, (0, 1), (1, 1)) self.Doc.recompute() self.SubtractiveLoft = self.Doc.addObject("PartDesign::SubtractiveLoft","SubtractiveLoft") self.Body.addObject(self.SubtractiveLoft) self.SubtractiveLoft.Profile = self.ProfileSketch self.SubtractiveLoft.Sections = [self.LoftSketch] self.Doc.recompute() self.assertAlmostEqual(self.SubtractiveLoft.Shape.Volume, 1) def testClosedAdditiveLoftCase(self): """ Test issue #6156: Loft tool "Closed" option not working """ body = self.Doc.addObject('PartDesign::Body','Body') sketch1 = body.newObject('Sketcher::SketchObject','Sketch') sketch1.AttachmentSupport = (self.Doc.XZ_Plane,['']) sketch1.MapMode = 'FlatFace' sketch1.addGeometry(Part.Circle(Base.Vector(-40.0,0.0,0.0),Base.Vector(0,0,1),10.0), False) sketch1.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1)) sketch1.addConstraint(Sketcher.Constraint('Diameter',0,20.0)) sketch1.setDatum(1,Units.Quantity('20.000000 mm')) sketch1.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0)) sketch1.setDatum(2,Units.Quantity('40.000000 mm')) sketch2 = body.newObject('Sketcher::SketchObject','Sketch001') sketch2.AttachmentSupport = (self.Doc.YZ_Plane,'') sketch2.MapMode = 'FlatFace' sketch2.addGeometry(Part.Circle(Base.Vector(-10.0,0.0,0.0),Base.Vector(0,0,1),10.0),False) sketch2.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1)) sketch2.addConstraint(Sketcher.Constraint('Diameter',0,20.0)) sketch2.setDatum(1,Units.Quantity('20.000000 mm')) sketch2.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0)) sketch2.setDatum(2,Units.Quantity('40.000000 mm')) sketch3 = body.newObject('Sketcher::SketchObject','Sketch002') sketch3.AttachmentSupport = (self.Doc.getObject('YZ_Plane'),'') sketch3.MapMode = 'FlatFace' sketch3.addGeometry(Part.Circle(Base.Vector(40.0,0.0,0.0),Base.Vector(0,0,1),10.0),False) sketch3.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1)) sketch3.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0)) sketch3.setDatum(1,Units.Quantity('40.000000 mm')) sketch3.addConstraint(Sketcher.Constraint('Diameter',0,20.0)) sketch3.setDatum(2,Units.Quantity('20.000000 mm')) sketch4 = body.newObject('Sketcher::SketchObject','Sketch003') sketch4.AttachmentSupport = (self.Doc.XZ_Plane,'') sketch4.MapMode = 'FlatFace' sketch4.addGeometry(Part.Circle(Base.Vector(40.0,0.0,0.0),Base.Vector(0,0,1),10.0),False) sketch4.addConstraint(Sketcher.Constraint('PointOnObject',0,3,-1)) sketch4.addConstraint(Sketcher.Constraint('Distance',-1,1,0,3,40.0)) sketch4.setDatum(1,Units.Quantity('40.000000 mm')) sketch4.addConstraint(Sketcher.Constraint('Diameter',0,20.0)) sketch4.setDatum(2,Units.Quantity('20.000000 mm')) self.Doc.recompute() loft = body.newObject('PartDesign::AdditiveLoft','AdditiveLoft') loft.Profile = sketch1 loft.Sections = [sketch2, sketch4, sketch3] loft.Closed = True sketch1.Visibility = False sketch2.Visibility = False sketch3.Visibility = False sketch4.Visibility = False self.Doc.recompute() self.assertGreater(loft.Shape.Volume, 80000.0) # 85105.5788704151 def testPadOnLoftBetweenCones(self): """ Test issue #15138 adapted from a script by chennes """ body = self.Doc.addObject('PartDesign::Body','Body') body.Label = 'Body' coneBottomSketch = body.newObject('Sketcher::SketchObject','ConeBottomSketch') coneBottomSketch.AttachmentSupport = (self.Doc.getObject('XY_Plane'),['']) coneBottomSketch.MapMode = 'FlatFace' geoList = [] geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000), Base.Vector(0.000000, 0.000000, 1.000000), 25.000000)) coneBottomSketch.addGeometry(geoList,False) del geoList constraintList = [] coneBottomSketch.addConstraint(Sketcher.Constraint('Diameter',0,25.000000)) coneBottomSketch.addConstraint(Sketcher.Constraint('Coincident', 0, 3, -1, 1)) geoList = [] geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000), Base.Vector(0.000000, 0.000000, 1.000000), 40.000000)) coneBottomSketch.addGeometry(geoList,False) del geoList constraintList = [] coneBottomSketch.addConstraint(Sketcher.Constraint('Diameter',1,40.000000)) coneBottomSketch.addConstraint(Sketcher.Constraint('Coincident', 1, 3, 0, 3)) coneTopSketch = body.newObject('Sketcher::SketchObject','ConeTopSketch') coneTopSketch.AttachmentSupport = (self.Doc.getObject('XY_Plane'),['']) coneTopSketch.MapMode = 'FlatFace' geoList = [] geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000), Base.Vector(0.000000, 0.000000, 1.000000), 8.000000)) coneTopSketch.addGeometry(geoList,False) del geoList constraintList = [] coneTopSketch.addConstraint(Sketcher.Constraint('Diameter',0,8.000000)) coneTopSketch.addConstraint(Sketcher.Constraint('Coincident', 0, 3, -1, 1)) geoList = [] geoList.append(Part.Circle(Base.Vector(0.000000, 0.000000, 0.000000), Base.Vector(0.000000, 0.000000, 1.000000), 15.000000)) coneTopSketch.addGeometry(geoList,False) del geoList constraintList = [] coneTopSketch.addConstraint(Sketcher.Constraint('Diameter',1,15.000000)) coneTopSketch.addConstraint(Sketcher.Constraint('Coincident', 1, 3, 0, 3)) coneTopSketch.AttachmentOffset = Base.Placement(Base.Vector(0,0,20),Base.Rotation(Base.Vector(0,0,1),0)) self.Doc.recompute() cone = body.newObject('PartDesign::AdditiveLoft','Cone') cone.Profile = coneBottomSketch cone.Sections = [(coneTopSketch, [''])] coneBottomSketch.Visibility = False coneTopSketch.Visibility = False self.Doc.recompute() pad = body.newObject('PartDesign::Pad','Pad') pad.Profile = (cone, ['Face4',]) pad.Length = 10.000000 pad.TaperAngle = 0.000000 pad.UseCustomVector = 0 pad.Direction = (0, 0, 1) pad.ReferenceAxis = None pad.AlongSketchNormal = 1 pad.Type = 0 pad.UpToFace = None pad.Reversed = 1 pad.Midplane = 0 pad.Offset = 0 cone.Visibility = True self.Doc.recompute() # TODO: why doesn't this volume math match up? outerConeBottomRadius = 40 / 2 outerConeTopRadius = 15 / 2 innerConeBottomRadius = 25 / 2 innerConeTopRadius = 8 / 2 coneHeight = 20.0 padHeight = 10.0 # Frustum volumes 12697 - 4655 = 8042 outerConeVolume = 1.0/3.0 * math.pi * coneHeight * ( outerConeBottomRadius**2 + outerConeTopRadius**2 + outerConeBottomRadius * outerConeTopRadius) innerConeVolume = 1.0/3.0 * math.pi * coneHeight * ( innerConeBottomRadius**2 + innerConeTopRadius**2 + innerConeBottomRadius * innerConeTopRadius) coneVolume = outerConeVolume - innerConeVolume topArea = math.pi * (outerConeTopRadius**2) - math.pi * (innerConeTopRadius**2) padVolume = topArea * padHeight self.assertAlmostEqual(cone.Shape.Faces[3].Area, topArea) # TODO: Next test currently showing 5 faces instead of 4, and then everything goes ugly. Not focus of this PR # so I will leave that for a loft fix PR, but capture the math WIP here on making the assertiong correct. # self.assertEqual(len(cone.Shape.Faces), 4) # Inner, Outer, Bottom, Top # self.assertAlmostEqual(pad.Shape.Volume, padVolume) // TODO Why so radically wrong? # self.assertAlmostEqual(cone.Shape.Volume, 5854.5823094398365) # coneVolume) // TODO Wrong # self.assertAlmostEqual(body.Shape.Volume, 14745.409518818293 ) # coneVolume + padVolume) // TODO Wrong # self.assertAlmostEqual(pad.Shape.Volume, 14745.409518818293 ) # coneVolume + padVolume) // TODO Wrong def tearDown(self): #closing doc FreeCAD.closeDocument("PartDesignTestLoft") #print ("omit closing document for debugging")