math.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 *
 */
 
#ifndef PHOENIXVR_MATH_H
#define PHOENIXVR_MATH_H
 
#include "common/scummsys.h"
 
namespace PhoenixVR {
static constexpr auto kTau = static_cast<float>(M_PI * 2);
static constexpr auto kPi = static_cast<float>(M_PI);
static constexpr auto kPi2 = static_cast<float>(M_PI_2);
 
inline float toRadian(float deg) {
    return kPi * deg / 180;
}
 
inline float toAngle(int a) {
    static const float angleToFloat = kPi / 4096.0f;
    return angleToFloat * static_cast<float>(a);
}
 
inline int fromAngle(float a) {
    if (a == INFINITY || a == -INFINITY)
        return -1;
    static const float floatToAngle = 4096.0f / kPi;
    return static_cast<int>(floatToAngle * a);
}
 
} // namespace PhoenixVR
 
#endif