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1 | /* |
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2 | Copyright (C) 2015 Daniel Watson |
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3 | See the end of the file for license conditions. |
4 | */ |
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5 | // challenge-bot |
6 | // GNU AGPLv3 (or later at your option) |
7 | // project available here: |
8 | // https://challenge-bot.com/ |
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9 | |
10 | module nut_2d(size) { |
11 | side_length = size * sin(30) / sin(120); |
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12 | for (ii = [-1:1]) { |
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13 | rotate(a = 120 * ii, v = [0, 0, 1]) { |
14 | square([side_length, size], center = true); } } } |
15 | |
16 | module nut(size, height) { |
17 | linear_extrude(height = height) { |
18 | nut_2d(size); } } |
19 | |
20 | /* |
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21 | This file is part of challenge-bot. |
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22 | |
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23 | Challenge-bot is free software: you can redistribute it and/or modify |
24 | it under the terms of the GNU Affero General Public License as published by |
25 | the Free Software Foundation, either version 3 of the License, or |
26 | (at your option) any later version. |
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27 | |
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28 | GNU Affero Emacs is distributed in the hope that it will be useful, |
29 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
30 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
31 | GNU Affero General Public License for more details. |
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32 | |
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33 | You should have received a copy of the GNU Affero General Public License |
34 | along with challenge-bot. If not, see <http://www.gnu.org/licenses/>. |
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35 | */ |