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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/>.
- */
-
- #include "scene/lod-group.hpp"
- #include "scene/camera.hpp"
-
- lod_group::lod_group(std::size_t level_count):
- bounds(get_translation(), get_translation())
- {
- resize(level_count);
- }
-
- lod_group::lod_group():
- lod_group(1)
- {}
-
- void lod_group::resize(std::size_t level_count)
- {
- levels.resize(level_count);
- }
-
- std::size_t lod_group::select_lod(const ::camera& camera) const
- {
- float distance = signed_distance(camera.get_view_frustum().get_near(), get_translation());
-
- if (distance < 300.0f)
- return 0;
- else if (distance < 500.0f)
- return 1;
- else if (distance < 600.0f)
- return 2;
-
- return 3;
- }
-
- void lod_group::add_object(std::size_t level, scene_object_base* object)
- {
- levels[level].push_back(object);
- }
-
- void lod_group::remove_object(std::size_t level, scene_object_base* object)
- {
- levels[level].remove(object);
- }
-
- void lod_group::remove_objects(std::size_t level)
- {
- levels[level].clear();
- }
-
- void lod_group::update_bounds()
- {
- bounds = {get_translation(), get_translation()};
- }
-
- void lod_group::transformed()
- {
- update_bounds();
- }
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