tutorial_freecad:playground
Tutorial FreeCAD Playground
Macro freecad
Stampa funzioni
# F = variable used in the function,
# X = initial value of x,
# Nb = Number of step,
# Z = function express with x
# ZZ = function express with xx
import FreeCAD, FreeCADGui, Part
import math
F=800
X=-500
Nb=10
Step=1000/Nb
Y=0
for I in range(Nb):
XX=X+Step
Z=X*X/(4*F)
ZZ=XX*XX/(4*F)
if I==0:
print "Le test est vrai !"
nomme=Part.makeLine((X,Y,Z),(XX,Y,ZZ))
WWire=Part.Wire([nomme])
else:
print "Le test est 2 !"
nomme=Part.makeLine((X,Y,Z),(XX,Y,ZZ))
WWire=Part.Wire([WWire,nomme])
X=XX
Part.show(WWire)
FreeCAD and pyQt
import FreeCAD, FreeCADGui, Part
from PyQt4 import QtGui,QtCore
def proceed():
try:
u = (int(l1.text()),float(l2.text()))
v = (int(l3.text()),float(l4.text()))
except:
FreeCAD.Console.PrintError("Wrong input! Only numbers allowed...\n")
sel = FreeCADGui.Selection.getSelection()
if sel:
sel = sel[0]
name = sel.Name
shape = sel.Shape
for column in range(u[0]):
for row in range(v[0]):
if (column != 0) or (row != 0):
delta = FreeCAD.Vector(column*u[1],row*v[1],0)
newshape = sel.Shape.copy()
newshape.translate(delta)
newobject = FreeCAD.ActiveDocument.addObject("Part::Feature",name)
newobject.Shape = newshape
else:
FreeCAD.Console.PrintError("Error: One object must be selected")
hide()
def hide():
dialog.hide()
dialog = QtGui.QDialog()
dialog.resize(200,300)
dialog.setWindowTitle("Array")
la = QtGui.QVBoxLayout(dialog)
t1 = QtGui.QLabel("number of columns")
la.addWidget(t1)
l1 = QtGui.QLineEdit()
la.addWidget(l1)
t2 = QtGui.QLabel("distance between columns")
la.addWidget(t2)
l2 = QtGui.QLineEdit()
la.addWidget(l2)
t3 = QtGui.QLabel("number of rows")
la.addWidget(t3)
l3 = QtGui.QLineEdit()
la.addWidget(l3)
t4 = QtGui.QLabel("distance between rows")
la.addWidget(t4)
l4 = QtGui.QLineEdit()
la.addWidget(l4)
okbox = QtGui.QDialogButtonBox(dialog)
okbox.setOrientation(QtCore.Qt.Horizontal)
okbox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
la.addWidget(okbox)
QtCore.QObject.connect(okbox, QtCore.SIGNAL("accepted()"), proceed)
QtCore.QObject.connect(okbox, QtCore.SIGNAL("rejected()"), hide)
QtCore.QMetaObject.connectSlotsByName(dialog)
dialog.show()
Barra filettata
Codice per creare una barra filettata (tratto da http://forum.freecadweb.org/viewtopic.php?f=3&t=1461)
import Part, FreeCAD, math from FreeCAD import Base d = 20.0 p = 2.5 h = p/2 r = d / 2.0 hp = p * math.tan(math.pi/3.0) dmin = d - 5.0 * hp /8.0 rmin = dmin / 2.0 edges = [] z1 = p/8.0 z2 = 7.0*p/16.0 rmax = r*1.05 edges.append( Part.makeLine((rmin,0,z1), (rmin,0,-z1)) ) edges.append( Part.makeLine((rmin,0,-z1), (r,0,-z2)) ) edges.append( Part.makeLine((r,0,-z2), (rmax,0,-z2)) ) edges.append( Part.makeLine((rmax,0,-z2), (rmax,0,z2)) ) edges.append( Part.makeLine((rmax,0,z2), (r,0,z2), ) ) edges.append( Part.makeLine((r,0,z2), (rmin,0,z1)) ) extSection = Part.Wire( edges ) helix = Part.makeHelix(p,h,r) makeSolid = True isFrenet = True extSolid = helix.makePipeShell([extSection],makeSolid,isFrenet) intSolid = Part.makeCylinder(r,h,Base.Vector(0,0,0),Base.Vector(0,0,1)) screw = intSolid.cut(extSolid) Part.show(screw)
import Part, FreeCAD, math
from FreeCAD import Base
def drawHelix(p, h, r):
edges = []
nSpire = int(h / p)
nStep = 16
t = 0.0
Dt = 2 * math.pi / nStep
p1 = (r*math.cos(t), r*math.sin(t), p*t/(2.0*math.pi) )
p2 = (r*math.cos(t+Dt), r*math.sin(t+Dt), p*(t+Dt)/(2.0*math.pi) )
for i in range(nSpire*nStep):
edges.append( Part.makeLine(p1, p2) )
t += Dt
p1 = (r*math.cos(t), r*math.sin(t), p*t/(2.0*math.pi) )
p2 = (r*math.cos(t+Dt), r*math.sin(t+Dt), p*(t+Dt)/(2.0*math.pi) )
return Part.Wire( edges )
d = 18.0
p = 2.5
h = 10.0
r = d / 2.0
hp = p * math.tan(math.pi/3.0)
dmin = d - 5.0 * hp /8.0
rmin = dmin / 2.0
edges = []
z1 = p/8.0
z2 = 7.0*p/16.0
rmax = r*1.05
edges.append( Part.makeLine((rmin,0,z1), (r,0,z2)) )
# edges.append( Part.makeLine((r,0,z2), (rmax,0,z2)) )
# edges.append( Part.makeLine((rmax,0,z2), (rmax,0,-z2)) )
# edges.append( Part.makeLine((rmax,0,-z2), (r,0,-z2)) )
edges.append( Part.makeLine((r,0,z2), (r,0,-z2)) )
edges.append( Part.makeLine((r,0,-z2), (rmin,0,-z1)) )
edges.append( Part.makeLine((rmin,0,-z1), (rmin,0,z1)) )
extSection = Part.Wire( edges )
// helix = Part.makeHelix(p,h,r)
helix = drawHelix(p,h,r)
makeSolid = True
isFrenet = True
extSolid = helix.makePipeShell([extSection],makeSolid,isFrenet)
intSolid = Part.makeCylinder(r,h,Base.Vector(0,0,0),Base.Vector(0,0,1))
screw = intSolid.cut(extSolid)
Part.show(screw)
import Part, FreeCAD, math from FreeCAD import Base d = 5.0 h = 10.0 p = 2.5 r = d/2.0 helix = Part.makeHelix(1,h,r) edges = [] edges.append( Part.makeLine((2.5,0,-0.125), (2.5,0,0.125)) ) edges.append( Part.makeLine((2.5,0,0.125), (3.1,0,0.419)) ) edges.append( Part.makeLine((3.1,0,0.419), (3.1,0,-0.419)) ) edges.append( Part.makeLine((3.1,0,-0.419), (2.5,0,-0.125)) ) section = Part.Wire(edges) makeSolid=True isFrenet=True pipe = Part.Wire(helix).makePipeShell([section],makeSolid,isFrenet) cylinder = Part.makeCylinder(r,h,Base.Vector(0,0,0),Base.Vector(0,0,1)) diff = cylinder.cut(pipe) Part.show(diff)
longHelix bug:
import Part, FreeCAD, math from FreeCAD import Base d = 20.0 r1 = d/2 r2 = r1 - 2.0 p = 10.0 h = 5*p h1 = 5.0 helixExtBot = Part.makeHelix(p,h,r1) helixExtUp = Part.makeHelix(p,h,r1) helixExtUp.translate((0,0,h1)) helixIntBot = Part.makeHelix(p,h,r2) helixIntUp = Part.makeHelix(p,h,r2) helixIntUp.translate((0,0,h1)) lBotBot = Part.makeLine((r1, 0, 0),(r2, 0, 0)) lBotUp = Part.makeLine((r1, 0, h1),(r2, 0, h1)) lUpBot = Part.makeLine((r1, 0, h),(r2, 0, h)) lUpUp = Part.makeLine((r1, 0, h+h1),(r2, 0, h+h1)) vertExt = Part.makeRuledSurface(helixExtBot, helixExtUp) vertInt = Part.makeRuledSurface(helixIntBot, helixIntUp) horBot = Part.makeRuledSurface(helixExtBot, helixIntBot) horUp = Part.makeRuledSurface(helixExtUp, helixIntUp) retBot = Part.makeRuledSurface(lBotBot, lBotUp) retUp = Part.makeRuledSurface(lUpBot, lUpUp) shell = Part.makeShell( [vertExt.Faces[0], vertInt.Faces[0], horBot.Faces[0], horUp.Faces[0], retBot.Faces[0], retUp.Faces[0]] ) solid = Part.makeSolid(shell) Part.show(solid)
Compilare FreeCAD su Windows
tutorial_freecad/playground.txt · Ultima modifica: 2016/04/12 16:04 da mickele
