73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# Copyright (C) 2013-2019 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 BurnTest(Boxes):
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"""Test different burn values"""
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description = """This generator will make shapes that you can use to select
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optimal value for burn parameter for other generators. After burning try to
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attach sides with the same value and use best fitting one on real projects.
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In this generator set burn in the Default Settings to the lowest value
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to be tested. To get an idea cut a rectangle with known nominal size and
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measure the shrinkage due to the width of the laser cut. Now you can
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measure the burn value that you should use in other generators. It is half
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the difference of the overall size as shrinkage is occurring on both
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sides. You can use the reference rectangle as it is rendered without burn
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correction.
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See also LBeam that can serve as compact BurnTest and FlexTest for testing flex settings.
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"""
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ui_group = "Part"
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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(x=100)
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self.argparser.add_argument(
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"--step", action="store", type=float, default=0.01,
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help="increases in burn value between the sides")
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self.argparser.add_argument(
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"--pairs", action="store", type=int, default=2,
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help="number of pairs (each testing four burn values)")
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def render(self):
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x, s = self.x, self.step
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t = self.thickness
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self.moveTo(t, t)
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for cnt in range(self.pairs):
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for i in range(4):
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self.text("%.3fmm" % self.burn, x/2, 2*t, align="center")
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self.edges["f"](x)
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self.corner(90)
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self.burn += s
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self.burn -= 4*s
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self.moveTo(x+2*t+self.spacing, -t)
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for i in range(4):
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self.text("%.3fmm" % self.burn, x/2, 2*t, align="center")
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self.edges["F"](x)
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self.polyline(t, 90, t)
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self.burn += s
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self.moveTo(x+2*t+self.spacing, t)
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