105 lines
3.6 KiB
Python
105 lines
3.6 KiB
Python
#!/usr/bin/env python3
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# Copyright (C) 2013-2014 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 SlotEdge(edges.Edge):
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def __call__(self, length, **kw):
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t, n = self.settings.thickness, self.settings.n
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r, h = self.settings.radius, self.settings.h
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sh = self.settings.sh # distance side to center
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li = 2 * sh * math.tan(math.radians(90/n)) # side inner 2x polygon
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ls2 = t / math.tan(math.radians(180/n))
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ls1 = t / math.cos(math.radians(90-(180/n)))
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lo = (length-li-2*ls1)/2
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li = li - 2*ls2 # correct for overlap of wall
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d = h/2
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if li > 0:
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poly = [lo-1, (90, 1), d+t-1, -90, ls1+ls2, -90, d-t, (90, t)]
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self.polyline(*(poly + [li-2*t] + list(reversed(poly))))
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def startwidth(self):
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return self.settings.thickness
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class RegularStarBox(Boxes):
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"""Regular polygon boxes that form a star when closed"""
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ui_group = "Box"
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description = """"""
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def __init__(self):
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Boxes.__init__(self)
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self.addSettingsArgs(edges.FingerJointSettings)
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self.buildArgParser("h", "outside")
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self.argparser.add_argument(
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"--radius", action="store", type=float, default=50.0,
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help="inner radius if the box (center to corners)")
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self.argparser.add_argument(
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"--n", action="store", type=int, default=5,
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choices=(3, 4, 5),
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help="number of sides")
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def render(self):
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r, h, n = self.radius, self.h, self.n
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if self.outside:
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self.r = r = r - self.thickness / math.cos(math.radians(360/(2*n)))
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self.h = h = self.adjustSize(h)
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t = self.thickness
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fingerJointSettings = copy.deepcopy(self.edges["f"].settings)
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fingerJointSettings.setValues(self.thickness, angle=360./n)
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fingerJointSettings.edgeObjects(self, chars="gGH")
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self.edges["e"] = SlotEdge(self, self)
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r, sh, side = self.regularPolygon(n, radius=r)
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self.sh = sh
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with self.saved_context():
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self.regularPolygonWall(corners=n, r=r, edges='F', move="right")
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self.regularPolygonWall(corners=n, r=r, edges='F', move="right")
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self.regularPolygonWall(corners=n, r=r, edges='F', move="up only")
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for s in range(2):
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with self.saved_context():
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if n % 2:
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for i in range(n):
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self.rectangularWall(side, h, move="right",
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edges="fgeG")
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else:
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for i in range(n//2):
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self.rectangularWall(side, h, move="right",
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edges="fGeG")
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self.rectangularWall(side, h, move="right",
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edges="fgeg")
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self.rectangularWall(side, h, move="up only",
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edges="fgeG")
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