💿🐜 Antkeeper source code
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105 lines
2.9 KiB
105 lines
2.9 KiB
/*
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* Copyright (C) 2020 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_CAMERA_SYSTEM_HPP
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#define ANTKEEPER_CAMERA_SYSTEM_HPP
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#include "entity-system.hpp"
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#include "event/event-handler.hpp"
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#include "event/input-events.hpp"
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#include "event/window-events.hpp"
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#include "utility/fundamental-types.hpp"
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#include "math/quaternion-type.hpp"
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#include "math/transform-type.hpp"
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#include "animation/spring.hpp"
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class camera;
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class orbit_cam;
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class camera_system:
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public entity_system,
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public event_handler<mouse_moved_event>,
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public event_handler<window_resized_event>
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{
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public:
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typedef math::quaternion<float> quaternion_type;
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typedef math::transform<float> transform_type;
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camera_system(entt::registry& registry);
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virtual void update(double t, double dt);
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void rotate(float angle);
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void tilt(float angle);
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void zoom(float factor);
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void set_camera(::camera* camera);
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void set_viewport(const float4& viewport);
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void set_azimuth(float angle);
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void set_elevation(float angle);
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void set_zoom(float factor);
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void set_focal_distance(float distance_near, float distance_far);
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void set_fov(float angle_near, float angle_far);
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void set_clip_near(float distance_near, float distance_far);
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void set_clip_far(float distance_near, float distance_far);
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const spring_constraint<float, float>& get_azimuth_spring() const;
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private:
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virtual void handle_event(const mouse_moved_event& event);
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virtual void handle_event(const window_resized_event& event);
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void update_focal_distance();
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void update_fov();
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camera* camera;
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float4 viewport;
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float2 mouse_position;
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spring_constraint<float, float> azimuth_spring;
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spring_constraint<float, float> elevation_spring;
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spring_constraint<float, float> focal_distance_spring;
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spring_constraint<float, float> fov_spring;
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float azimuth;
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float elevation;
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float focal_distance;
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float zoom_factor;
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float fov;
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float focal_distance_near;
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float focal_distance_far;
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float fov_near;
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float fov_far;
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float near_clip_near;
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float near_clip_far;
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float far_clip_near;
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float far_clip_far;
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quaternion_type elevation_rotation;
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quaternion_type azimuth_rotation;
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};
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inline const spring_constraint<float, float>& camera_system::get_azimuth_spring() const
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{
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return azimuth_spring;
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}
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#endif // ANTKEEPER_CAMERA_SYSTEM_HPP
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