1 /* B.Harvestr
2  * LV2 Plugin
3  *
4  * Copyright (C) 2019 by Sven Jähnichen
5  *
6  * This program 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 3, or (at your option)
9  * any later version.
10  *
11  * This program 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.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20 
21 #ifndef LIMIT_HPP_
22 #define LIMIT_HPP_
23 
24 #include <cmath>
25 
26 struct Limit
27 {
28 	float min;
29 	float max;
30 	float step;
31 
validateLimit32         float validate (float value) const
33         {
34                 if (max <= min) return min;
35                 if (value <= min) return min;
36                 if (value >= max) return max;
37                 if (step == 0) return value;
38 		float newValue = (step > 0 ? min + round ((value - min) / step) * step : max - round ((max - value) / step) * step);
39 		return (newValue >= min ? (newValue <= max ? newValue : max) : min);
40         }
41 };
42 
43 #endif /* LIMIT_HPP_ */
44