ReshadePluginsCore/libs/Maths/Maths.hpp

#pragma once

#include <windows.h>

class Maths
{
    public:
        // Compute new horizontal FOV based on native and target aspect ratio
        static double CompensateHorizontalFOV(const double baseHorizontalFOVDeg, const double baseAspectRatio, const double targetAspectRatio);
        // Compute FOV horizontal to vertical based on aspect ratio
        static float FOVHToV(float fovH, float aspect);
        // Compute FOV vertical to horizontal based on aspect ratio
        static float FOVVToH(float fovV, float aspect);

    private:
        static double DegreesToRadians(double degrees);
        static double RadiansToDegrees(double radians);
};