/*
Copyright (C) 2015 Daniel Watson
See the end of the file for license conditions.
*/
// challenge-bot
// GNU AGPLv3 (or later at your option)
// project available here:
// https://challenge-bot.com/

module nut_2d(size) {
  side_length = size * sin(30) / sin(120);
  for (ii = [-1:1]) {
    rotate(a = 120 * ii, v = [0, 0, 1]) {
      square([side_length, size], center = true); } } }

module nut(size, height) {
  linear_extrude(height = height) {
    nut_2d(size); } }

/*
  This file is part of challenge-bot.

  Challenge-bot is free software: you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  GNU Affero Emacs is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
*/