/*
* Copyright (C) 2021 Christopher J. Howard
*
* This file is part of Antkeeper source code.
*
* Antkeeper source code is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Antkeeper source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Antkeeper source code. If not, see .
*/
#ifndef ANTKEEPER_CAMERA_SYSTEM_HPP
#define ANTKEEPER_CAMERA_SYSTEM_HPP
#include "entity-system.hpp"
#include "event/event-handler.hpp"
#include "event/input-events.hpp"
#include "event/window-events.hpp"
#include "utility/fundamental-types.hpp"
#include "math/quaternion-type.hpp"
#include "math/transform-type.hpp"
#include "animation/orbit-cam.hpp"
class camera;
class orbit_cam;
class camera_system:
public entity_system,
public event_handler,
public event_handler
{
public:
typedef math::quaternion quaternion_type;
typedef math::transform transform_type;
camera_system(entt::registry& registry);
virtual void update(double t, double dt);
void pan(float angle);
void tilt(float angle);
void zoom(float factor);
void set_camera(::camera* camera);
void set_viewport(const float4& viewport);
const orbit_cam* get_orbit_cam() const;
orbit_cam* get_orbit_cam();
private:
virtual void handle_event(const mouse_moved_event& event);
virtual void handle_event(const window_resized_event& event);
camera* camera;
float4 viewport;
float2 mouse_position;
orbit_cam orbit_cam;
};
inline const orbit_cam* camera_system::get_orbit_cam() const
{
return &orbit_cam;
}
inline orbit_cam* camera_system::get_orbit_cam()
{
return &orbit_cam;
}
#endif // ANTKEEPER_CAMERA_SYSTEM_HPP