spk_force_2d.hpp

#pragma once
 
#include "structure/math/spk_safe_comparand.hpp"
#include "structure/math/spk_vector2.hpp"
 
namespace spk
{
    struct Force2D
    {
        spk::Vector2 direction = {0.0f, 0.0f};
        float magnitude = 0.0f;

        Force2D() = default;
        Force2D(const spk::Vector2 &p_direction, const float &p_magnitude) :
            direction(p_direction),
            magnitude(p_magnitude)
        {
        }

        spk::Vector2 vector() const
        {
            return direction * magnitude;
        }

        static Force2D fromVector(const spk::Vector2 &p_vector)
        {
            const float length = p_vector.length();
            if (spk::SafeComparand(length) == 0.0f)
            {
                return {};
            }
            return Force2D(p_vector / length, length);
        }
    };
}