Camera.hpp

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#ifndef GALAXY_GRAPHICS_CAMERA_HPP_
#define GALAXY_GRAPHICS_CAMERA_HPP_
 
#include "galaxy/fs/Serializable.hpp"
#include "galaxy/graphics/Transform.hpp"
#include "galaxy/utils/Globals.hpp"
 
namespace galaxy
{
    namespace input
    {
        class CameraController;
    } // namespace input
 
    namespace graphics
    {
        class Camera final : public Transform, fs::Serializable
        {
            friend class input::CameraController;
 
        public:
            struct alignas(16) Data final
            {
                glm::mat4 m_model_view = glm::mat4 {GALAXY_IDENTITY_MATRIX};
 
                glm::mat4 m_projection = glm::mat4 {GALAXY_IDENTITY_MATRIX};
            };
 
            Camera();
 
            Camera(const nlohmann::json& json);
 
            Camera(Camera&&);
 
            Camera& operator=(Camera&&);
 
            Camera(const Camera&);
 
            Camera& operator=(const Camera&);
 
            virtual ~Camera();
 
            void set_viewport(const float width, const float height);
 
            void translate(const float x, const float y) override;
 
            void rotate(const float degrees) override;
 
            [[nodiscard]]
            const glm::vec2& get_viewport() const;
 
            [[nodiscard]]
            const glm::mat4& get_model_view();
 
            [[nodiscard]]
            const glm::mat4& get_proj();
 
            [[nodiscard]]
            Data& get_data();
 
            [[nodiscard]]
            nlohmann::json serialize() override;
 
            void deserialize(const nlohmann::json& json) override;
 
        private:
            void set_projection(const float left, const float right, const float bottom, const float top);
 
            void recalculate();
 
        public:
            bool m_allow_rotation;
 
            float m_translation_speed;
 
            float m_rotation_speed;
 
        private:
            Data m_data;
 
            glm::vec2 m_viewport;
        };
    } // namespace graphics
} // namespace galaxy
 
#endif