ES-DE/es-core/src/math/Misc.h

//  SPDX-License-Identifier: MIT
//
//  EmulationStation Desktop Edition
//  Misc.h
//
//  Miscellaneous math functions.
//

#ifndef ES_CORE_MATH_MISC_H
#define ES_CORE_MATH_MISC_H

#define	ES_PI (3.1415926535897932384626433832795028841971693993751058209749445923)
#define	ES_RAD_TO_DEG(_x) ((_x) * (180.0 / ES_PI))
#define	ES_DEG_TO_RAD(_x) ((_x) * (ES_PI / 180.0))

namespace Math
{
    // When moving to the C++20 standard these functions are no longer required.
    float clamp(const float _num, const float _min, const float _max);
    float lerp(const float _start, const float _end, const float _fraction);

    float smoothStep(const float _left, const float _right, const float _x);
    float smootherStep(const float _left, const float _right, const float _x);

    namespace Scroll
    {
        float bounce(const float _delayTime, const float _scrollTime,
                const float _currentTime, const float _scrollLength);
        float loop(const float _delayTime, const float _scrollTime,
                const float _currentTime, const float _scrollLength);
    }
}

#endif // ES_CORE_MATH_MISC_H