| 1 | /* |
| 2 | Copyright (C) 2015 Daniel Watson |
| 3 | See the end of the file for license conditions. |
| 4 | */ |
| 5 | // challenge-bot |
| 6 | // GNU AGPLv3 (or later at your option) |
| 7 | // project available here: |
| 8 | // https://challenge-bot.com/ |
| 9 | |
| 10 | module nut_2d(size) { |
| 11 | side_length = size * sin(30) / sin(120); |
| 12 | for (ii = [-1:1]) { |
| 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 | /* |
| 21 | This file is part of challenge-bot. |
| 22 | |
| 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. |
| 27 | |
| 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. |
| 32 | |
| 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/>. |
| 35 | */ |