💿🐜 Antkeeper source code
https://antkeeper.com
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80 lines
1.9 KiB
80 lines
1.9 KiB
/*
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* Copyright (C) 2023 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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#include "scene/lod-group.hpp"
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#include "scene/camera.hpp"
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namespace scene {
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lod_group::lod_group(std::size_t level_count):
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local_bounds{{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}},
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world_bounds{{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}}
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{
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resize(level_count);
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}
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lod_group::lod_group():
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lod_group(1)
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{}
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void lod_group::resize(std::size_t level_count)
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{
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levels.resize(level_count);
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}
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std::size_t lod_group::select_lod(const camera& camera) const
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{
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float distance = camera.get_view_frustum().get_near().signed_distance(get_translation());
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if (distance < 300.0f)
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return 0;
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else if (distance < 500.0f)
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return 1;
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else if (distance < 600.0f)
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return 2;
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return 3;
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}
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void lod_group::add_object(std::size_t level, object_base* object)
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{
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levels[level].push_back(object);
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}
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void lod_group::remove_object(std::size_t level, object_base* object)
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{
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levels[level].remove(object);
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}
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void lod_group::remove_objects(std::size_t level)
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{
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levels[level].clear();
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}
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void lod_group::update_bounds()
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{
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world_bounds = {get_translation(), get_translation()};
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}
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void lod_group::transformed()
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{
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update_bounds();
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}
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} // namespace scene
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