/*
- Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2015-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ libdcp 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 General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
+
+/** @file src/chromaticity.h
+ * @brief Chromaticity class
+ */
+
+
#ifndef DCP_CHROMATICITY_H
#define DCP_CHROMATICITY_H
+
#include <cmath>
+
namespace dcp {
+
+/** @class Chromaticity
+ * @brief A representation of a x,y,z chromaticity, where z = 1 - x - y
+ */
class Chromaticity
{
public:
- Chromaticity ()
- : x (0)
- , y (0)
- {}
+ Chromaticity () {}
Chromaticity (double x_, double y_)
: x (x_)
, y (y_)
{}
-
- double x;
- double y;
+
+ double x = 0;
+ double y = 0;
double z () const {
return 1 - x - y;
}
+ /** @return true if this Chromaticity's x and y are within epsilon of other */
bool about_equal (Chromaticity const & other, float epsilon) const {
- return std::fabs (x - other.x) < epsilon && std::fabs (y - other.y) < epsilon;
+ return std::fabs(x - other.x) < epsilon && std::fabs(y - other.y) < epsilon;
}
+
+ static Chromaticity D65 ();
};
+
}
+
#endif