💿🐜 Antkeeper source code
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118 lines
3.1 KiB
118 lines
3.1 KiB
/*
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* Copyright (C) 2021 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_LOD_GROUP_HPP
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#define ANTKEEPER_LOD_GROUP_HPP
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#include "scene/scene-object.hpp"
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#include "geometry/aabb.hpp"
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#include <list>
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#include <vector>
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class camera;
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class lod_group: public scene_object<lod_group>
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{
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public:
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/**
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* Creates a LOD group.
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*
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* @param level_count Number of detail levels in the group.
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*/
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lod_group(std::size_t level_count);
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/// Creates a LOD group with one level of detail.
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lod_group();
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/**
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* Resizes the LOD group to accommodate the specified number of detail levels.
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*
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* @param level_count Number of desired detail levels in the group.
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*/
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void resize(std::size_t level_count);
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/**
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* Selects the appropriate level of detail for a camera.
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*
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* @param camera Camera for which the LOD should be selected.
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* @return Selected level of detail.
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*/
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std::size_t select_lod(const ::camera& camera) const;
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/**
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* Adds an object to the LOD group.
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*
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* @param level Level of detail of the object to add.
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* @param object Object to add.
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*/
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void add_object(std::size_t level, scene_object_base* object);
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/**
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* Removes an object from the LOD group.
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*
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* @param level Level of detail of the object to remove.
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* @param object Object to remove.
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*/
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void remove_object(std::size_t level, scene_object_base* object);
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/**
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* Removes all objects with the specified level of detail.
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*
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* @param level Level of detail of the objects to remove.
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*/
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void remove_objects(std::size_t level);
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virtual const bounding_volume<float>& get_bounds() const;
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/// Returns the number of detail levels in the group.
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std::size_t get_level_count() const;
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/**
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* Returns a list containing all objects in the LOD group with the specified detail level.
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*
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* @param level Level of detail.
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* @return List of all objects in the group with the specified detail level.
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*/
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const std::list<scene_object_base*>& get_objects(std::size_t level) const;
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private:
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void update_bounds();
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virtual void transformed();
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aabb<float> bounds;
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std::vector<std::list<scene_object_base*>> levels;
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};
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inline const bounding_volume<float>& lod_group::get_bounds() const
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{
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return bounds;
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}
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inline std::size_t lod_group::get_level_count() const
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{
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return levels.size();
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}
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inline const std::list<scene_object_base*>& lod_group::get_objects(std::size_t level) const
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{
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return levels[level];
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}
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#endif // ANTKEEPER_LOD_GROUP_HPP
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