camera_projections.h

#ifndef OE_SCENE_CAMERA_PROJECTIONS_H
#define OE_SCENE_CAMERA_PROJECTIONS_H
 
#include <concepts>
#include <glm/mat4x4.hpp>
 
#include "../util/angle.h"
 
namespace oe::scene
{
    template <typename T>
    concept CameraProjection = requires(T t)
    {
        { t.getProjectionMatrix() } -> std::same_as<glm::mat4>;
    };

    struct PerspectiveProjection
    {
        glm::mat4 getProjectionMatrix() const noexcept;

        lit::Angle fov;

        float aspect_ratio;

        float near;

        float far;
    };

    struct FrustumProjection
    {
        glm::mat4 getProjectionMatrix() const noexcept;

        float left;

        float right;

        float bottom;

        float top;

        float near;

        float far;
    };

    struct OrthographicProjection
    {
        glm::mat4 getProjectionMatrix() const noexcept;

        float left;

        float right;

        float bottom;

        float top;

        float near;

        float far;
    };
}
 
#endif