b1789ae7d2
LGTM has identified a number of minor issues with the FCGear Part Design scripts. This commit addresses each of them, and also corrects two minor spelling errors in the dialog. None of the errors or their fixes are expected to result in changes to the functionality of the script.
71 lines
2.4 KiB
Python
71 lines
2.4 KiB
Python
# (c) 2014 David Douard <david.douard@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License (LGPL)
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# as published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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# for detail see the LICENCE text file.
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#
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# FCGear is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Library General Public License for more details.
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#
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# You should have received a copy of the GNU Library General Public
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# License along with FCGear; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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import itertools
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from involute import CreateExternalGear, rotate
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def makeGear(m, Z, angle):
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w = SVGWireBuilder()
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CreateExternalGear(w, m, Z, angle)
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return '\n'.join(w.svg)
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class SVGWireBuilder(object):
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def __init__(self):
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self.theta = 0.0
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self.pos = None
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self.svg = []
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def move(self, p):
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p = rotate(p, self.theta)
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self.svg.append('M %s,%s' % (p[0], p[1]))
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self.pos = p
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def line(self, p):
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p = rotate(p, self.theta)
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self.svg.append('L %s,%s' % (p[0], p[1]))
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self.pos = p
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def arc(self, p, r, sweep):
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p = rotate(p, self.theta)
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self.svg.append('A %s,%s 0,0,%s %s,%s' % (r, r, str(sweep), p[0], p[1]))
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self.pos = p
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def curve(self, *points):
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"""Add a Bezier curve from self.pos to points[-1]
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every other points are the control points of the Bezier curve (which
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will thus be of degree len(points) )
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"""
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assert len(points) == 3
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points = [rotate(p, self.theta) for p in points]
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self.svg.append('C %s,%s %s,%s %s,%s' % tuple(itertools.chain(*points)))
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self.pos = points[-1]
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def close(self):
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self.svg.append('Z')
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if __name__ == '__main__':
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from optparse import OptionParser
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p = OptionParser()
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p.add_option('-a', '--angle', help='pressure angle',
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dest='angle', default=20)
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opts, args = p.parse_args()
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if len(args) != 2:
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p.error("Invalid arguments")
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m, Z = [float(v) for v in args]
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print(makeGear(m, int(Z), float(opts.angle)))
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