# *************************************************************************** # * 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): """Loft Tests""" 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, [ "Face3", ], ) 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 = False pad.SideType = "One side" pad.Offset = 0 cone.Visibility = True self.Doc.recompute() outerConeBottomRadius = 40 / 2 outerConeTopRadius = 15 / 2 innerConeBottomRadius = 25 / 2 innerConeTopRadius = 8 / 2 coneHeight = 20.0 padHeight = 10.0 # Frustum volumes 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 ) ) frustumVolume = outerConeVolume - innerConeVolume topArea = math.pi * (outerConeTopRadius**2) - math.pi * (innerConeTopRadius**2) bottomArea = math.pi * (outerConeBottomRadius**2) - math.pi * (innerConeBottomRadius**2) padVolume = topArea * padHeight self.assertEqual(len(cone.Shape.Faces), 4) # Bottom, Inner, Top, Outer self.assertAlmostEqual(cone.Shape.Faces[2].Area, topArea) self.assertAlmostEqual(cone.Shape.Faces[0].Area, bottomArea) self.assertAlmostEqual(cone.Shape.Volume, frustumVolume) self.assertAlmostEqual( pad.Shape.Volume, frustumVolume + padVolume ) # contains volume of previous in Body self.assertAlmostEqual( body.Shape.Volume, frustumVolume + padVolume ) # Overall body volume matches def testTwoFacesAdditiveLoftCase(self): """Test issue #19183: Loft tool "Loft between faces no longer works""" body = self.Doc.addObject("PartDesign::Body", "Body") sketch1 = body.newObject("Sketcher::SketchObject", "Sketch") sketch1.addGeometry( Part.LineSegment( Base.Vector(-2.060394, -1.332045, 0), Base.Vector(-19.922129, -27.589359, 0), ), False, ) sketch1.addGeometry( Part.LineSegment( Base.Vector(1.940183, -1.501086, 0), Base.Vector(16.928263, -28.265512, 0), ), False, ) sketch1.addGeometry( Part.ArcOfCircle( Part.Circle(Base.Vector(0.418837, -1.275699, 0), Base.Vector(0, 0, 1), 32.879378), -1.751723, -1.454683, ), False, ) sketch1.addGeometry( Part.ArcOfCircle( Part.Circle( Base.Vector(-9.385396, -30.124937, 0), Base.Vector(0, 0, 1), 8.359959, ), 2.847554, 4.831818, ), False, ) sketch1.addGeometry( Part.ArcOfCircle( Part.Circle( Base.Vector(3.236143, -29.279745, 0), Base.Vector(0, 0, 1), 11.449505, ), -1.076432, 0.044306, ), False, ) sketch1.addConstraint(Sketcher.Constraint("Coincident", 0, 1, 1, 1)) sketch1.addConstraint(Sketcher.Constraint("Coincident", 0, 1, 2, 3)) sketch1.addConstraint(Sketcher.Constraint("Coincident", 0, 1, -1, 1)) sketch1.addConstraint(Sketcher.Constraint("Tangent", 0, 2, 3, 1)) sketch1.addConstraint(Sketcher.Constraint("Tangent", 1, 2, 4, 2)) sketch1.addConstraint(Sketcher.Constraint("Tangent", 2, 1, 3, 2)) sketch1.addConstraint(Sketcher.Constraint("Tangent", 2, 2, 4, 1)) sketch1.addConstraint(Sketcher.Constraint("Symmetric", 0, 2, 1, 2, -2)) sketch1.addConstraint(Sketcher.Constraint("Symmetric", 2, 1, 2, 2, -2)) sketch1.delConstraint(8) sketch1.addConstraint(Sketcher.Constraint("Radius", 2, 39.936694)) sketch1.setDatum(8, Units.Quantity("40.000000 mm")) sketch1.addConstraint(Sketcher.Constraint("DistanceX", 2, 1, 2, 2, 16.771341)) sketch1.setDatum(9, Units.Quantity("10.000000 mm")) sketch1.addConstraint(Sketcher.Constraint("Distance", 0, 30.965710)) sketch1.setDatum(10, Units.Quantity("30.000000 mm")) sketch2 = body.newObject("Sketcher::SketchObject", "Sketch001") sketch2.addGeometry( Part.LineSegment( Base.Vector(-2.060394, -1.332045, 0), Base.Vector(-19.922129, -27.589359, 0), ), False, ) sketch2.addGeometry( Part.LineSegment( Base.Vector(1.940183, -1.501086, 0), Base.Vector(16.928263, -28.265512, 0), ), False, ) sketch2.addGeometry( Part.ArcOfCircle( Part.Circle(Base.Vector(0.418837, -1.275699, 0), Base.Vector(0, 0, 1), 32.879378), -1.751723, -1.454683, ), False, ) sketch2.addGeometry( Part.ArcOfCircle( Part.Circle( Base.Vector(-9.385396, -30.124937, 0), Base.Vector(0, 0, 1), 8.359959, ), 2.847554, 4.831818, ), False, ) sketch2.addGeometry( Part.ArcOfCircle( Part.Circle( Base.Vector(3.236143, -29.279745, 0), Base.Vector(0, 0, 1), 11.449505, ), -1.076432, 0.044306, ), False, ) sketch2.addConstraint(Sketcher.Constraint("Coincident", 0, 1, 1, 1)) sketch2.addConstraint(Sketcher.Constraint("Coincident", 0, 1, 2, 3)) sketch2.addConstraint(Sketcher.Constraint("Coincident", 0, 1, -1, 1)) sketch2.addConstraint(Sketcher.Constraint("Tangent", 0, 2, 3, 1)) sketch2.addConstraint(Sketcher.Constraint("Tangent", 1, 2, 4, 2)) sketch2.addConstraint(Sketcher.Constraint("Tangent", 2, 1, 3, 2)) sketch2.addConstraint(Sketcher.Constraint("Tangent", 2, 2, 4, 1)) sketch2.addConstraint(Sketcher.Constraint("Symmetric", 0, 2, 1, 2, -2)) sketch2.addConstraint(Sketcher.Constraint("Symmetric", 2, 1, 2, 2, -2)) sketch2.delConstraint(8) sketch2.addConstraint(Sketcher.Constraint("Radius", 2, 39.936694)) sketch2.setDatum(8, Units.Quantity("30.000000 mm")) sketch2.addConstraint(Sketcher.Constraint("Radius", 3, 1.020288)) sketch2.setDatum(9, Units.Quantity("3.600000 mm")) sketch2.addConstraint(Sketcher.Constraint("DistanceX", 2, 1, 2, 2, 10.926759)) sketch2.setDatum(10, Units.Quantity("10.000000 mm")) self.Doc.recompute() pad1 = body.newObject("PartDesign::Pad", "Pad") pad1.Profile = sketch1 pad1.Length = 10.000000 pad1.TaperAngle = 0.000000 pad1.Reversed = 1 self.Doc.recompute() sketch1.Visibility = False pad2 = body.newObject("PartDesign::Pad", "Pad001") pad2.Profile = sketch2 pad2.Length = 10.000000 pad2.TaperAngle = 0.000000 self.Doc.recompute() sketch2.Visibility = False pad1.Visibility = False pad2.Visibility = True body.Tip = pad2 self.assertGreater(pad2.Shape.Volume, 8715.0) # 8720.024151557787 pre-Loft loft = body.newObject("PartDesign::AdditiveLoft", "AdditiveLoft") loft.Profile = ( self.Doc.getObject("Pad001"), [ "Face7", ], ) loft.Sections = [ ( self.Doc.getObject("Pad001"), [ "Face10", ], ) ] loft.Closed = False self.Doc.recompute() body.Tip = loft self.assertGreater(body.Shape.Volume, 9220.0) # 9221.776241582389 post-Loft self.Doc.recompute() def tearDown(self): # closing doc FreeCAD.closeDocument("PartDesignTestLoft") # print ("omit closing document for debugging")