/
Spring.py
51 lines (45 loc) · 1.77 KB
/
Spring.py
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
#! python
# -*- coding: utf-8 -*-
# (c) 2011 Adrian Przekwas LGPL
from __future__ import division # allows floating point division from integers
import FreeCAD, Part
from FreeCAD import Base
class MySpring:
def __init__(self, obj):
''' Add the properties: Pitch, Diameter, Height, BarDiameter '''
obj.addProperty("App::PropertyLength","Pitch","MySpring","Pitch of the helix").Pitch=5.0
obj.addProperty("App::PropertyLength","Diameter","MySpring","Diameter of the helix").Diameter=6.0
obj.addProperty("App::PropertyLength","Height","MySpring","Height of the helix").Height=30.0
obj.addProperty("App::PropertyLength","BarDiameter","MySpring","Diameter of the bar").BarDiameter=3.0
obj.Proxy = self
def onChanged(self, fp, prop):
if prop == "Pitch" or prop == "Diameter" or prop == "Height" or prop == "BarDiameter":
self.execute(fp)
def execute(self, fp):
pitch = fp.Pitch
radius = fp.Diameter/2
height = fp.Height
barradius = fp.BarDiameter/2
myhelix=Part.makeHelix(pitch,height,radius)
g=myhelix.Edges[0].Curve
c=Part.Circle()
c.Center=g.value(0) # start point of the helix
c.Axis=(0,1,0)
c.Radius=barradius
p=c.toShape()
section = Part.Wire([p])
makeSolid=1 #change to 1 to make a solid
isFrenet=1
myspring=Part.Wire(myhelix).makePipeShell([section],makeSolid,isFrenet)
fp.Shape = myspring
def makeMySpring():
doc = FreeCAD.activeDocument()
if doc is None:
doc = FreeCAD.newDocument()
spring=doc.addObject("Part::FeaturePython","My_Spring")
spring.Label = "My Spring"
MySpring(spring)
spring.ViewObject.Proxy=0
doc.recompute()
if __name__ == "__main__":
makeMySpring()