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- /*
- * Copyright (C) 2020 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 <http://www.gnu.org/licenses/>.
- */
-
- #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"
-
- class camera;
- class orbit_cam;
-
- class camera_system:
- public entity_system,
- public event_handler<mouse_moved_event>,
- public event_handler<window_resized_event>
- {
- public:
- typedef math::quaternion<float> quaternion_type;
- typedef math::transform<float> transform_type;
-
- camera_system(entt::registry& registry);
- virtual void update(double t, double dt);
-
- void rotate(float angle);
- void tilt(float angle);
- void zoom(float factor);
-
- void set_camera(::camera* camera);
- void set_viewport(const float4& viewport);
- void set_azimuth(float angle);
- void set_elevation(float angle);
- void set_zoom(float factor);
- void set_focal_distance(float distance_near, float distance_far);
- void set_fov(float angle_near, float angle_far);
- void set_clip_near(float distance_near, float distance_far);
- void set_clip_far(float distance_near, float distance_far);
-
- 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;
-
- float azimuth;
- float elevation;
- float zoom_factor;
- float focal_distance_near;
- float focal_distance_far;
- float fov_near;
- float fov_far;
- float near_clip_near;
- float near_clip_far;
- float far_clip_near;
- float far_clip_far;
-
- quaternion_type elevation_rotation;
- quaternion_type azimuth_rotation;
- };
-
- #endif // ANTKEEPER_CAMERA_SYSTEM_HPP
-
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