spring-arm-component.hpp

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/*
 * Copyright (C) 2023  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_GAME_SPRING_ARM_COMPONENT_HPP
#define ANTKEEPER_GAME_SPRING_ARM_COMPONENT_HPP
 
#include <engine/entity/id.hpp>
#include <engine/math/vector.hpp>
#include <engine/math/quaternion.hpp>
#include <engine/math/angles.hpp>
#include <engine/physics/spring.hpp>
 
struct spring_arm_component
{
    entity::id parent_eid{entt::null};
    
    double near_focal_plane_height{1.0};
    
    math::dquat up_rotation{math::dquat::identity()};
    
    math::dquat camera_rotation{math::dquat::identity()};
    
    math::dvec3 angular_velocities{};
    
    math::dvec3 min_angles{-math::half_pi<double>, -std::numeric_limits<double>::infinity(), -std::numeric_limits<double>::infinity()};
    
    math::dvec3 max_angles{math::half_pi<double>, std::numeric_limits<double>::infinity(), std::numeric_limits<double>::infinity()};
    
    physics::numeric_spring<math::dvec3, double> focal_point_spring;
    
    physics::numeric_spring<math::dvec3, double> angles_spring;
    
    // physics::numeric_spring<double, double> arm_length_spring;
    
    
    
    
    double far_focal_plane_height{50.0};
    
    double near_hfov{math::radians(90.0)};
    
    double far_hfov{math::radians(45.0)};
    
    double zoom{};
    
    double hfov{};
    
    double vfov{};
    
    math::dvec3 focal_point_offset{};
    
    double focal_distance{};
    
    double focal_plane_width{};
    
    double focal_plane_height{};
};
 
#endif // ANTKEEPER_GAME_SPRING_ARM_COMPONENT_HPP