4 flatland is a simple 2d physical simulator
6 Copyright (c) 2016 Idiap Research Institute, http://www.idiap.ch/
7 Written by Francois Fleuret <francois.fleuret@idiap.ch>
9 This file is part of flatland
11 flatland is free software: you can redistribute it and/or modify it
12 under the terms of the GNU General Public License version 3 as
13 published by the Free Software Foundation.
15 flatland is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with flatland. If not, see <http://www.gnu.org/licenses/>.
32 #define ASSERT(x, s) if(!(x)) { std::cerr << "ASSERT FAILED IN " << __FILE__ << ":" << __LINE__ << " [" << (s) << "]\n"; abort(); }
37 // typedef float scalar_t;
38 typedef double scalar_t;
40 inline scalar_t sq(scalar_t x) { return x*x; }
42 inline scalar_t prod_vect(scalar_t x1, scalar_t y1, scalar_t x2, scalar_t y2) {
43 return x1 * y2 - x2 * y1;
51 int compare_couple(const void *a, const void *b);