New generator: BottleStack
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Florian Festi
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#!/usr/bin/env python3
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# Copyright (C) 2013-2020 Florian Festi
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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 General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from boxes import *
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class BottleStack(Boxes):
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"""Stack bottles in a fridge"""
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description = """When rendered with the "double" option the parts with the double slots get connected the shorter beams in the asymetrical slots.
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Without the "double" option the stand is a bit more narrow.
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"""
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ui_group = "Misc"
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def __init__(self):
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Boxes.__init__(self)
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self.argparser.add_argument(
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"--diameter", action="store", type=float, default=80,
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help="diameter of the bottles in mm")
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self.argparser.add_argument(
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"--number", action="store", type=int, default=3,
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help="number of bottles to hold in the bottom row")
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self.argparser.add_argument(
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"--depth", action="store", type=float, default=80,
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help="depth of the stand along the base of the bottles")
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self.argparser.add_argument(
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"--double", action="store", type=boolarg, default=True,
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help="two pieces that can be combined to up to double the width")
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def front(self, h_sides, offset=0, move=None):
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t = self.thickness
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a = 60
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nr = self.number
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r1 = self.diameter / 2.0 # bottle
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r2 = r1 / math.cos(math.radians(90-a)) - r1 # inbetween
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if self.double:
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r3 = 1.5*t # upper corners
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else:
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r3 = .5*t
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h = (r1+r2) * (1-math.cos(math.radians(a)))
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h_extra = 1*t
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h_s = h_sides - t
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p = 0.05*t # play
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tw, th = nr * r1 * 2 + 2*r3, h + 2*t
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if self.move(tw, th, move, True):
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return
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open_sides = r3 <= 0.5*t
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if offset == 0:
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slot = [0, 90, h_s, -90, t, -90, h_s, 90]
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if open_sides:
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self.moveTo(0, h_s)
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self.polyline(r3-0.5*t)
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self.polyline(*slot[4:])
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else:
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self.polyline(r3-0.5*t)
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self.polyline(*slot)
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for i in range(nr-open_sides):
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self.polyline(2*r1-t)
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self.polyline(*slot)
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if open_sides:
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self.polyline(2*r1-t)
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self.polyline(*slot[:-3])
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self.polyline(r3-0.5*t)
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else:
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self.polyline(r3-0.5*t)
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else:
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slot = [0, 90, h_s, -90, t, -90, h_s, 90]
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h_s += t
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slot2 = [0, 90, h_s, -90, t+2*p, -90, h_s, 90]
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if open_sides:
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self.moveTo(0, h_s)
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self.polyline(t+p, -90, h_s, 90)
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else:
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self.polyline(r3-0.5*t-p)
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self.polyline(*slot2)
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self.polyline(t-p)
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self.polyline(*slot)
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self.polyline(2*r1-5*t)
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self.polyline(*slot)
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self.polyline(t-p)
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self.polyline(*slot2)
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for i in range(1, nr-open_sides):
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self.polyline(2*r1-3*t-p)
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self.polyline(*slot)
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self.polyline(t-p)
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self.polyline(*slot2)
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if open_sides:
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self.polyline(2*r1-3*t-p)
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self.polyline(*slot)
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self.polyline(t-p)
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self.polyline(0, 90, h_s, -90, t+p)
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else:
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self.polyline(r3-0.5*t-p)
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if open_sides:
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h_extra -= h_s
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self.polyline(0, 90, h_extra+h-r3, (90, r3))
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for i in range(nr):
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self.polyline(0, (a, r2), 0, (-2*a, r1), 0, (a, r2))
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self.polyline(0, (90, r3), h_extra+h-r3, 90)
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self.move(tw, th, move)
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def side(self, l, h, short=False, move=None):
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t = self.thickness
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short = bool(short)
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tw, th = l + 2*t - 4*t*short, h
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if self.move(tw, th, move, True):
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return
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self.moveTo(t, 0)
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self.polyline(l-3*t*short)
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if short:
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end = [90, h-t, 90, t, -90, t, 90]
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else:
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end = [(90, t), h-2*t, (90, t), 0, 90, t, -90, t, -90, t, 90]
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self.polyline(0, *end)
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self.polyline(l-2*t- 3*t*short)
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self.polyline(0, *reversed(end))
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self.move(tw, th, move)
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def render(self):
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t = self.thickness
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d = self.depth
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nr = self.number
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h_sides = 2*t
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pieces = 2 if self.double else 1
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for offset in range(pieces):
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self.front(h_sides, offset, move="up")
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self.front(h_sides, offset, move="up")
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for short in range(pieces):
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for i in range(nr+1):
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self.side(d, h_sides, short, move="up")
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