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