ray.hpp

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#pragma once
#include "../math.hpp"
namespace mal_math
{
    class Ray
    {
    public:
        Ray() = default;
        Ray(vec3 const &origin, vec3 const &direction)
            : origin_(origin), direction_(direction) {
            OnDirectionUpdate();
        }
        Ray(vec3 const &origin, vec3 const &direction) {…}
        [[nodiscard]] constexpr vec3 const &origin() const noexcept { return origin_; }
        [[nodiscard]] constexpr vec3 &origin() noexcept { return origin_; }
        [[nodiscard]] constexpr vec3 const &direction() const noexcept { return direction_; }
        [[nodiscard]] constexpr vec3 const &inv_direction() const noexcept { return inv_direction_; }
        [[nodiscard]] constexpr ivec3 const &sign() const noexcept { return sign_; }
        void SetDirection(vec3 const &new_direction)
        {
            direction_ = new_direction;
            OnDirectionUpdate();
        }
        void SetDirection(vec3 const &new_direction) {…}
        [[nodiscard]] vec3 PointAtParameter(float t) const
        {
            return origin_ + direction_ * t;
        }
        [[nodiscard]] vec3 PointAtParameter(float t) const {…}
 
    private:
        void OnDirectionUpdate()
        {
            inv_direction_ = 1 / direction_;
            sign_ = ivec3{ inv_direction_.x < 0, inv_direction_.y < 0, inv_direction_.z < 0 };
        }
        void OnDirectionUpdate() {…}
        vec3 origin_;         
        vec3 direction_;      
        vec3 inv_direction_;  
        ivec3 sign_;          
    };
    class Ray {…};
}; // namespace mal_math