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mightyscape-0.92-deprecated/extensions/fablabchemnitz_gears2.py

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2019-11-14 20:05:10 +01:00
#! /usr/bin/env python
'''
Copyright (C) 2013 Matthew Dockrey (gfish @ cyphertext.net)
Based on http://arc.id.au/GearDrawing.html by Dr A.R.Collins
And on the original gears.py by Aaron Spike and Tavmjong Bah
'''
import inkex
import simplestyle, sys
from math import *
from fablabchemnitz_involute import *
class Gears(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.OptionParser.add_option("--tab",
action="store", type="string",
dest="tab", default="Options",
help="The tab selected when OK was pressed")
self.OptionParser.add_option("-t", "--teeth",
action="store", type="int",
dest="teeth", default=24,
help="Number of teeth")
self.OptionParser.add_option("-p", "--pangle",
action="store", type="float",
dest="pressure_angle", default="20",
help="Pressure angle")
self.OptionParser.add_option("-y", "--size_type",
action="store", type="int",
dest="type", default="1",
help="Size type (1 = module (mm), 2 = pitch diameter (inches), 3 = diametral pitch (inches)")
self.OptionParser.add_option("-s", "--size",
action="store", type="float",
dest="size", default="5",
help="Size")
self.OptionParser.add_option("-o", "--orientation",
action="store", type="int",
dest="orientation", default="1",
help="Gear orientation")
def effect(self):
Z = self.options.teeth
phi = self.options.pressure_angle
size_type = self.options.type
size = self.options.size
orientation = self.options.orientation
# Convert size to module (mm) if needed
if (size_type == 2):
# Pitch diameter
size = 25.4 * size / Z
elif (size_type == 3):
# Diametral pitch
size = 25.4 / size
m = self.unittouu(str(size) + "mm")
if (orientation == 2):
svg = CreateInternalGear(m, Z, phi)
else:
svg = CreateExternalGear(m, Z, phi)
# Insert as a new element
gear_style = { 'stroke': '#000000',
'stroke-width': '0.1',
'fill': 'none'
}
g_attribs = {inkex.addNS('label','inkscape'): 'Gear ' + str(Z),
'transform': 'translate(' + str( self.view_center[0] ) + ',' + str( self.view_center[1] ) + ')',
'style' : simplestyle.formatStyle(gear_style),
'd' : svg }
g = inkex.etree.SubElement(self.current_layer, inkex.addNS('path','svg'), g_attribs)
if __name__ == '__main__':
e = Gears()
e.affect()