2 Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
23 #include <dcp/types.h>
31 vector<Ratio const *> Ratio::_ratios;
34 Ratio::setup_ratios ()
36 _ratios.push_back (new Ratio (float(1290) / 1080, "119", _("1.19"), "119"));
37 _ratios.push_back (new Ratio (float(1440) / 1080, "133", _("4:3"), "133"));
38 _ratios.push_back (new Ratio (float(1485) / 1080, "138", _("Academy"), "137"));
39 _ratios.push_back (new Ratio (float(1800) / 1080, "166", _("1.66"), "166"));
40 _ratios.push_back (new Ratio (float(1920) / 1080, "178", _("16:9"), "178"));
41 _ratios.push_back (new Ratio (float(1998) / 1080, "185", _("Flat"), "F"));
42 _ratios.push_back (new Ratio (float(2048) / 872, "235", _("2.35"), "S"));
43 _ratios.push_back (new Ratio (float(2048) / 858, "239", _("Scope"), "S"));
44 _ratios.push_back (new Ratio (float(2048) / 1080, "full-frame", _("Full frame"), "C"));
48 Ratio::from_id (string i)
50 /* We removed the ratio with id 137; replace it with 138 */
55 vector<Ratio const *>::iterator j = _ratios.begin ();
56 while (j != _ratios.end() && (*j)->id() != i) {
60 if (j == _ratios.end ()) {
67 /** @return Ratio corresponding to a given fractional ratio (+/- 0.01), or 0 */
69 Ratio::from_ratio (float r)
71 vector<Ratio const *>::iterator j = _ratios.begin ();
72 while (j != _ratios.end() && fabs ((*j)->ratio() - r) > 0.01) {
76 if (j == _ratios.end ()) {
84 Ratio::nearest_from_ratio (float r)
86 Ratio const * nearest = 0;
87 float distance = FLT_MAX;
89 for (vector<Ratio const *>::iterator i = _ratios.begin (); i != _ratios.end(); ++i) {
90 float const d = fabs ((*i)->ratio() - r);