File size: 7,614 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 | # ***************************************************************************
# * Copyright (c) 2011 Juergen Riegel <FreeCAD@juergen-riegel.net> *
# * *
# * 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
import TestSketcherApp
App = FreeCAD
class TestMultiTransform(unittest.TestCase):
def setUp(self):
self.Doc = FreeCAD.newDocument("PartDesignTestMultiTransform")
FreeCAD.ConfigSet("SuppressRecomputeRequiredDialog", "True")
def testMultiTransform(self):
self.Body = self.Doc.addObject("PartDesign::Body", "Body")
# Make first offset cube Pad
self.PadSketch = self.Doc.addObject("Sketcher::SketchObject", "SketchPad")
self.Body.addObject(self.PadSketch)
TestSketcherApp.CreateRectangleSketch(self.PadSketch, (0, 0), (10, 10))
self.Doc.recompute()
self.Pad = self.Doc.addObject("PartDesign::Pad", "Pad")
self.Body.addObject(self.Pad)
self.Pad.Profile = self.PadSketch
self.Pad.Length = 10
self.Doc.recompute()
self.MultiTransform = self.Doc.addObject("PartDesign::MultiTransform", "MultiTransform")
self.Doc.recompute()
self.MultiTransform.Originals = [self.Pad]
self.MultiTransform.Shape = self.Pad.Shape
self.Body.addObject(self.MultiTransform)
self.Doc.recompute()
self.Mirrored = self.Doc.addObject("PartDesign::Mirrored", "Mirrored")
self.Mirrored.MirrorPlane = (self.PadSketch, ["H_Axis"])
self.Body.addObject(self.Mirrored)
self.LinearPattern = self.Doc.addObject("PartDesign::LinearPattern", "LinearPattern")
self.LinearPattern.Direction = (self.PadSketch, ["H_Axis"])
self.LinearPattern.Length = 20
self.LinearPattern.Occurrences = 3
self.Body.addObject(self.LinearPattern)
self.PolarPattern = self.Doc.addObject("PartDesign::PolarPattern", "PolarPattern")
self.PolarPattern.Axis = (self.PadSketch, ["N_Axis"])
self.PolarPattern.Angle = 360
self.PolarPattern.Occurrences = 4
self.Body.addObject(self.PolarPattern)
self.MultiTransform.Transformations = [self.Mirrored, self.LinearPattern, self.PolarPattern]
self.Doc.recompute()
self.assertAlmostEqual(self.MultiTransform.Shape.Volume, 20000)
def testMultiTransformDressup(self):
# Arrange
Doc = self.Doc
Body = Doc.addObject("PartDesign::Body", "Body")
Body.AllowCompound = False
# Make first offset cube Pad
PadSketch = Doc.addObject("Sketcher::SketchObject", "SketchPad")
Body.addObject(PadSketch)
xw = yw = zw = 10
TestSketcherApp.CreateRectangleSketch(PadSketch, (0, 0), (xw, yw))
Doc.recompute()
Pad = Doc.addObject("PartDesign::Pad", "Pad")
Body.addObject(Pad)
Pad.Profile = PadSketch
Pad.Length = zw
Doc.recompute()
MultiTransform = Doc.addObject("PartDesign::MultiTransform", "MultiTransform")
Doc.recompute()
MultiTransform.Originals = [Pad]
MultiTransform.Shape = Pad.Shape
Body.addObject(MultiTransform)
Doc.recompute()
Mirrored = Doc.addObject("PartDesign::Mirrored", "Mirrored")
Mirrored.MirrorPlane = (Doc.getObject("XY_Plane"), [""])
Mirrored.Refine = True
Body.addObject(Mirrored)
Mirrored2 = Doc.addObject("PartDesign::Mirrored", "Mirrored")
Mirrored2.MirrorPlane = (Doc.getObject("XZ_Plane"), [""])
Mirrored2.Refine = True
Body.addObject(Mirrored2)
MultiTransform.Transformations = [Mirrored, Mirrored2]
MultiTransform.Refine = True
Doc.recompute()
Fillet = Doc.addObject("PartDesign::Fillet", "Fillet")
Fillet.Base = (MultiTransform, ["Face1", "Face2"])
radius = 3
Fillet.Radius = radius
Body.addObject(Fillet)
# Broken out calculation of volume with two adjacent filleted faces = 5 long edges, 2 short edges,
# 2 fully rounded corners and 4 corners with only 2 fillets meeting
cubeVolume = xw * yw * zw * 2 * 2 # Mirrored and mirrored again.
filletOuter = radius**2 * (xw - radius * 2) # Volume of the rect prisms the fillets are in.
filletCorner = radius**3 # Volume of the rect prism corners
qRoundArea = math.pi * radius**2 / 4 # Area of the quarter round fillet profile
filletPrism = qRoundArea * (xw - radius * 2) # Volume of fillet minus corners
fillet3Corner = (
math.pi * radius**3 * 4 / 3 / 8
) # Volume of a fully rounded corner ( Sphere / 8 )
fillet2Corner = radius**2 * 2 # Volume of corner with two fillets intersecting
fillet1Corner = (
math.pi * radius**2 / 4 * radius
) # Volume of corner with stopped single fillet
extraFillet = qRoundArea * xw # extra fillet in a mirrored direction
filletOuterExt = radius**2 * 10 # extra rect prim surrounding fillet
rectBox = (
cubeVolume - (4 + 3) * (filletOuter + filletCorner) - 5 * filletOuterExt + filletCorner
)
fillets = (
(4 + 3) * filletPrism
+ 5 * extraFillet
+ fillet3Corner * 2
+ fillet2Corner * 4
+ fillet1Corner * 0
)
volume = rectBox + fillets
# Act
Link = Doc.addObject("App::Link", "Link001")
Link.setLink(Doc.Body)
Link.Label = "Body001"
Doc.recompute()
# Assert
self.assertAlmostEqual(abs(Body.Shape.Volume), volume, 6)
self.assertAlmostEqual(abs(Link.Shape.Volume), volume, 6)
def testMultiTransformBody(self):
pass
# TODO: Someone who understands the second mode added to transform needs to
# write a test here. Maybe close to testMultiTransform but with
# self.Mirrored.TransformMode="Transform body" instead of
# self.Mirrored.TransformMode="Transform tools"
def tearDown(self):
# closing doc
FreeCAD.closeDocument("PartDesignTestMultiTransform")
FreeCAD.ConfigSet("SuppressRecomputeRequiredDialog", "")
# print ("omit closing document for debugging")
|