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Mario Voigt 2023-03-24 08:33:00 +01:00
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Geodesic Domes/dome.py Normal file
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# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'geodesic_dialog.ui'
# And changed manually to use FreeCAD "Gui::InputField"
# Created: Sun Jan 4 22:20:58 2015
# by: pyside-uic 0.2.15 running on PySide 1.2.2
#
# Upgrade 2019/06/16 for use with FreeCAD 0.19 version
#OS: Windows 10 (10.0)
#Word size of OS: 64-bit
#Word size of FreeCAD: 64-bit
#Version: 0.19.16993 (Git)
#Build type: Release
#Branch: master
#Hash: 5ea062f6699666b2f284f6a52105acf20828b481
#Python version: 3.6.8
#Qt version: 5.12.1
#Coin version: 4.0.0a
#OCC version: 7.3.0
'''
************************************************************************
* Copyright (c)2015 2019 Ulrich Brammer <ulrich1a[at]users.sourceforge.net> *
* *
* This file is a supplement to the FreeCAD CAx development system. *
* *
* 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 software 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 macro; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
* *
************************************************************************
'''
from PySide import QtCore, QtGui
import FreeCAD, FreeCADGui, math, Part
from FreeCAD import Base
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(477, 188)
self.dia = Dialog
self.gridLayoutWidget = QtGui.QWidget(Dialog)
self.gridLayoutWidget.setGeometry(QtCore.QRect(19, 19, 440, 141))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtGui.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
self.label = QtGui.QLabel(self.gridLayoutWidget)
self.label.setObjectName("label")
self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
#self.lineEdit = QtGui.QLineEdit(self.gridLayoutWidget)
fui = FreeCADGui.UiLoader()
self.lineEdit = fui.createWidget("Gui::InputField")
self.lineEdit.setObjectName("lineEdit")
self.gridLayout.addWidget(self.lineEdit, 0, 1, 1, 1)
self.label_2 = QtGui.QLabel(self.gridLayoutWidget)
self.label_2.setObjectName("label_2")
self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
self.lineEdit_2 = QtGui.QLineEdit(self.gridLayoutWidget)
self.lineEdit_2.setObjectName("lineEdit_2")
self.gridLayout.addWidget(self.lineEdit_2, 1, 1, 1, 1)
self.label_3 = QtGui.QLabel(self.gridLayoutWidget)
self.label_3.setObjectName("label_3")
self.gridLayout.addWidget(self.label_3, 2, 0, 1, 1)
self.buttonBox = QtGui.QDialogButtonBox(self.gridLayoutWidget)
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons \
(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.gridLayout.addWidget(self.buttonBox, 2, 1, 1, 1)
self.retranslateUi(Dialog)
QtCore.QObject.connect(self.buttonBox, \
QtCore.SIGNAL("accepted()"), self.makeSomething)
QtCore.QObject.connect(self.buttonBox, \
QtCore.SIGNAL("rejected()"), self.makeNothing)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
# original code commented 2019/06/16
# Dialog.setWindowTitle(QtGui.QApplication.translate \
# ("Dialog", "Geodesic Dome Creator", \
# None, QtGui.QApplication.UnicodeUTF8))
# self.label.setText(QtGui.QApplication.translate \
# ("Dialog", "Dome Radius", None, QtGui.QApplication.UnicodeUTF8))
# self.label_2.setText(QtGui.QApplication.translate \
# ("Dialog", "Frequency Parameter\n(Integer between 1 to 10)", \
# None,QtGui.QApplication.UnicodeUTF8))
# self.label_3.setText(QtGui.QApplication.translate \
# ("Dialog", "This Macro creates \na full geodesic dome shell.\nX-Y-symmetry plane \nfor even frequencies", \
# None, QtGui.QApplication.UnicodeUTF8))
####
# replacement code 2019/06/16
Dialog.setWindowTitle("Geodesic Dome Creator")
self.label.setText("Dome Radius")
self.label_2.setText("Frequency Parameter\n(Integer between 1 to 10)")
self.label_3.setText("This Macro creates \na full geodesic dome shell.\nX-Y-symmetry plane \nfor even frequencies")
####
def makeSomething(self):
print( "accepted! Dome radius: ", self.lineEdit.property("text"), \
" with Frequency: ", int(self.lineEdit_2.text()))
doc=App.activeDocument()
label = "GeodesicDome"
theDome = doc.addObject("Part::Feature",label)
radius = self.lineEdit.property("text")
frequency = int(self.lineEdit_2.text())
self.dia.close()
self.makeDome(theDome, radius, frequency)
doc.recompute()
def makeNothing(self):
print( "rejected!!")
self.dia.close()
def makeDome(self, obj, domeRad_str, ny):
def makeFreqFaces(fPt, sPt, thPt, ny = 1):
# makes the geodesic dome faces out of the points of an
# icosahedron triangle
b = self.a/ny # length of frequent triangles
# definition of direction vectors
growVec = (sPt - fPt)
# growVec = (fPt - sPt)
growVec.multiply(1.0/ny)
crossVec = (thPt - sPt)
# crossVec = (sPt - thPt)
crossVec.multiply(1.0/ny)
for k in range(ny):
kThirdPt = fPt + growVec * (k+0.0)
dThirdPt = Base.Vector(kThirdPt.x, kThirdPt.y, kThirdPt.z)
dThirdPt = dThirdPt.normalize().multiply(domeRad.Value)
kSecPt = fPt + growVec * (k+1.0)
dSecPt = Base.Vector(kSecPt.x, kSecPt.y, kSecPt.z)
dSecPt = dSecPt.normalize().multiply(domeRad.Value)
# thirdEdge = Part.makeLine(kSecPt, kThirdPt)
# thirdEdge = Part.makeLine(dSecPt, dThirdPt)
for l in range(k+1):
firstPt = kSecPt + crossVec *(l+1.0)
dFirstPt = firstPt.normalize().multiply(domeRad.Value)
secPt = kSecPt + crossVec *(l+0.0)
dSecPt =secPt.normalize().multiply(domeRad.Value)
thirdPt = kThirdPt + crossVec *(l+0.0)
dThirdPt = thirdPt.normalize().multiply(domeRad.Value)
#thirdEdge = Part.makeLine(secPt, thirdPt)
thirdEdge = Part.makeLine(dSecPt, dThirdPt)
# Part.show(thirdEdge)
if l > 0:
print( "in l: ", l, " mod 2: ", l%2)
# What to do here?
#secEdge = Part.makeLine(oThirdPt,thirdPt)
secEdge = Part.makeLine(doThirdPt,dThirdPt)
# Part.show(secEdge)
#thirdEdge = Part.makeLine(secPt, thirdPt)
#thirdEdge = Part.makeLine(dSecPt, dThirdPt)
# Part.show(thirdEdge)
triWire = Part.Wire([firstEdge, secEdge, thirdEdge])
# Part.show(triWire)
triFace = Part.Face(triWire)
self.domeFaces.append(triFace)
#Part.show(triFace)
oThirdPt = thirdPt
doThirdPt = oThirdPt.normalize().multiply(domeRad.Value)
# oFirstPt = firstPt
#firstEdge = Part.makeLine(thirdPt,firstPt)
firstEdge = Part.makeLine(dThirdPt,dFirstPt)
oFirstEdge = firstEdge
#secEdge = Part.makeLine(firstPt,secPt)
secEdge = Part.makeLine(dFirstPt,dSecPt)
#Part.show(firstEdge)
#Part.show(secEdge)
#Part.show(thirdEdge)
triWire = Part.Wire([firstEdge, secEdge, thirdEdge])
triFace = Part.Face(triWire)
self.domeFaces.append(triFace)
#Part.show(triFace)
domeRad = FreeCAD.Units.Quantity(domeRad_str)
# self.a = Strutlength of underlying icosahedron:
self.a=(4.0*domeRad.Value)/math.sqrt(2.0*math.sqrt(5.0)+10.0)
# icoAngle: angle of vertices of icosahedron points
# not a north or south pole
self.icoAngle = math.atan(0.5)
self.icoLat = domeRad.Value * math.sin(self.icoAngle)
self.latRad = domeRad.Value * math.cos(self.icoAngle)
self.ang36 = math.radians(36.0)
# Calculation all points of the icosahedron
self.icoPts = []
self.icoPts.append(Base.Vector(0.0, 0.0, domeRad.Value))
for i in range(10):
self.icoCos = self.latRad * math.cos(i*self.ang36)
self.icoSin = self.latRad * math.sin(i*self.ang36)
if i%2 == 0:
self.icoPts.append(Base.Vector(self.icoSin, self.icoCos, self.icoLat))
else:
self.icoPts.append(Base.Vector(self.icoSin, self.icoCos, -self.icoLat))
self.icoPts.append(Base.Vector(0.0, 0.0, -domeRad.Value))
# making the faces of the icosahedron
self.icoFaces = [] # collects faces of the underlying icosahedron
self.domeFaces = [] # collects the faces of the geodesic dome
thirdPt = self.icoPts[9]
thirdEdge = Part.makeLine(self.icoPts[0],thirdPt)
for i in range(5):
j = i*2+1
firstEdge = Part.makeLine(thirdPt,self.icoPts[j])
secEdge = Part.makeLine(self.icoPts[j],self.icoPts[0])
triWire = Part.Wire([firstEdge, secEdge, thirdEdge])
triFace = Part.Face(triWire)
self.icoFaces.append(triFace)
# Part.show(triFace)
makeFreqFaces(self.icoPts[j], self.icoPts[0], thirdPt, ny)
thirdEdge = Part.makeLine(self.icoPts[0],self.icoPts[j])
thirdPt = self.icoPts[j]
thirdPt = self.icoPts[9]
secPt = self.icoPts[10]
thirdEdge = Part.makeLine(secPt,thirdPt)
for i in range(10):
j = i+1
firstEdge = Part.makeLine(thirdPt,self.icoPts[j])
secEdge = Part.makeLine(self.icoPts[j],secPt)
triWire = Part.Wire([firstEdge, secEdge, thirdEdge])
triFace = Part.Face(triWire)
self.icoFaces.append(triFace)
#Part.show(triFace)
makeFreqFaces(self.icoPts[j], secPt, thirdPt, ny)
thirdPt = secPt
secPt = self.icoPts[j]
thirdEdge = Part.makeLine(secPt,thirdPt)
thirdPt = self.icoPts[10]
thirdEdge = Part.makeLine(self.icoPts[11],thirdPt)
for i in range(5):
j = i*2+2
firstEdge = Part.makeLine(thirdPt,self.icoPts[j])
secEdge = Part.makeLine(self.icoPts[j],self.icoPts[11])
triWire = Part.Wire([firstEdge, secEdge, thirdEdge])
triFace = Part.Face(triWire)
self.icoFaces.append(triFace)
#Part.show(triFace)
makeFreqFaces(self.icoPts[j], self.icoPts[11], thirdPt, ny)
thirdEdge = Part.makeLine(self.icoPts[11],self.icoPts[j])
thirdPt = self.icoPts[j]
# Shell of a corresponding icosahedron
newShell = Part.Shell(self.icoFaces)
#Part.show(newShell)
# Shell of the geodesic dome
#self.domeShell = Part.Shell(self.domeFaces)
#Part.show(self.domeShell)
obj.Shape = Part.Shell(self.domeFaces)
# Shere with radius of geodesic dome for debugging purposes
testSphere = Part.makeSphere(domeRad.Value)
#Part.show(testSphere)
d = QtGui.QWidget()
d.ui = Ui_Dialog()
d.ui.setupUi(d)
d.ui.lineEdit_2.setText("2")
d.ui.lineEdit.setProperty("text", "2 m")
d.show()

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# FreeCAD-Macros
Different macros to create geodesic domes with FreeCAD 20.2
## Sources
# dome.py
- based on https://wiki.freecad.org/Macro_Geodesic_Dome
# dome_advanced.py
- based on https://forum.freecad.org/viewtopic.php?p=125238#p125238
- modified to work with FreeCAD 20.2
- has some glitches at the moment:
- diameter is wrong
- spreadsheets cannot calculate all fields because some contain units with plain text