Source code for boxes.generators.ottolegs

#!/usr/bin/env python3
# Copyright (C) 2013-2016 Florian Festi
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program 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 General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

from boxes import *
from boxes import edges

class LegEdge(edges.BaseEdge):

    def __call__(self, l, **kw):
        d0 = (l - 12.0) /2
        self.hole(l/2, 6, 3.0)
        self.polyline(d0, 90, 0, (-180, 6), 0, 90, d0)

[docs]class OttoLegs(Boxes): """Otto LC - a laser cut chassis for Otto DIY - legs""" ui_group = "Misc" def __init__(self): Boxes.__init__(self) self.addSettingsArgs(edges.FingerJointSettings, finger=1.0, space=1.0, surroundingspaces=1.0) self.argparser.add_argument( "--anklebolt1", action="store", type=float, default=3.0, help="diameter for hole for ankle bolts - foot side") self.argparser.add_argument( "--anklebolt2", action="store", type=float, default=2.6, help="diameter for hole for ankle bolts - leg side") self.argparser.add_argument( "--length", action="store", type=float, default=34.0, help="length of legs (34mm min)") def foot(self, x, y, ly, l, r=5., move=None): if self.move(x, y, move, True): return t = self.thickness w = ly + 5.5 + 2 * t self.fingerHolesAt(x/2 - w/2, 0, l, 90) self.fingerHolesAt(x/2 + w/2, 0, l, 90) self.moveTo(r, 0) for l in (x, y, x, y): self.polyline((l - 2*r, 2), 45, r*2**0.5, 45) self.move(x, y, move) def ankles(self, x, h, edge="f", callback=None, move=None): f = 0.5 tw = x th = 2 * h + self.thickness if self.move(tw, th, move, True): return self.moveTo(0, self.thickness) for i in range(2): self.cc(callback, 0) self.edges[edge](x) self.polyline(0, 90) self.cc(callback, 1) self.polyline((h, 2), 90, (f*x, 1), 45, ((2**0.5)*(1-f)*x, 1), 45, (h-(1-f)*x, 1), 90) self.moveTo(tw, th, 180) self.ctx.stroke() self.move(tw, th, move) def ankle1(self): # from vertical edge self.hole(15, 10, 3.45) # 3.45 for servo arm, 2.3 for knob def servoring(self, move=""): if self.move(20, 20, move, True): return self.moveTo(10, 10, 90) self.moveTo(3.45, 0, -90) self.polyline(0, (-264, 3.45), 0, 36, 6.55, 108, 0, (330, 9.0, 4), 0, 108, 6.55) self.move(20, 20, move) def ankle2(self): # from vertical edge self.hole(15, 10, self.anklebolt1/2) def servoHole(self): self.hole(6, 6, 11.6/2) self.hole(6, 12, 5.5/2) def render(self): # adjust to the variables you want in the local scope t = self.thickness ws = 25 lx, ly, lh = 12.4, 23.5, max(self.length, ws+6+t) self.ctx.save() # Legs c1 = edges.CompoundEdge(self, "FE", (ly-7.0, 7.0)) c2 = edges.CompoundEdge(self, "EF", (7.0, lh-7.0)) e = [c1, c2, "F", "F"] for i in range(2): # front self.rectangularWall(lx, lh-7., [LegEdge(self, None), "f", "F", "f"], callback=[None, lambda:self.fingerHolesAt(ws-7., 0, lx)], move="right") # back self.rectangularWall(lx, lh, "FfFf", callback=[ lambda:self.hole(lx/2, 7, self.anklebolt2/2)], move="right") # sides self.rectangularWall(ly, lh, e, callback=[None, lambda:self.fingerHolesAt(ws, 7.0, ly-7.0-3.0)], move="right") self.rectangularWall(ly, lh, e, callback=[ lambda:self.rectangularHole(ly/2, ws+3+0.5*t, 12, 6, 3), lambda:self.fingerHolesAt(ws, 7.0, ly-7.0-3.0)], move="right") # top self.partsMatrix(2, 1, "right", self.rectangularWall, ly, lx, "ffff", callback=[None, lambda: self.hole(lx/2, ly/2, 2.3)]) self.partsMatrix(2, 1, "right", self.rectangularWall, lx, ly, "eeee", callback=[lambda: self.hole(lx/2, ly/2, 1.5)]) # hold servo at the front self.partsMatrix(2, 1, "right", self.rectangularWall, 4.6, lx, "efee") # bottom self.partsMatrix(2, 1, "right", self.rectangularWall, lx, ly-7.0, "efff") # hold servo inside self.partsMatrix(2, 1, "right", self.rectangularWall, lx, ly-7.0-3.0, "efef") self.ctx.restore() self.rectangularWall(lx, lh, "ffff", move="up only") # feet self.foot(60, 40, ly, 30, move="right") self.foot(60, 40, ly, 30, move="right") self.ankles(30, 25, callback=[None, self.ankle1], move="right") self.ankles(30, 25, callback=[None, self.ankle2], move="right") self.partsMatrix(2, 2, "right", self.servoring)