112 lines
2.4 KiB
C++
112 lines
2.4 KiB
C++
/* Copyright (c) 2018-2024, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "aabb.h"
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#include "core/util/logging.hpp"
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namespace vkb
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{
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namespace sg
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{
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AABB::AABB()
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{
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reset();
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}
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AABB::AABB(const glm::vec3 &min, const glm::vec3 &max) :
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min{min},
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max{max}
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{
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}
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std::type_index AABB::get_type()
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{
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return typeid(AABB);
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}
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void AABB::update(const glm::vec3 &point)
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{
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min = glm::min(min, point);
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max = glm::max(max, point);
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}
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void AABB::update(const std::vector<glm::vec3> &vertex_data, const std::vector<uint16_t> &index_data)
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{
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// Check if submesh is indexed
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if (index_data.size() > 0)
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{
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// Update bounding box for each indexed vertex
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for (size_t index_id = 0; index_id < index_data.size(); index_id++)
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{
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update(vertex_data[index_data[index_id]]);
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}
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}
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else
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{
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// Update bounding box for each vertex
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for (size_t vertex_id = 0; vertex_id < vertex_data.size(); vertex_id++)
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{
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update(vertex_data[vertex_id]);
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}
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}
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}
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void AABB::transform(glm::mat4 &transform)
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{
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min = max = glm::vec4(min, 1.0f) * transform;
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// Update bounding box for the remaining 7 corners of the box
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update(glm::vec4(min.x, min.y, max.z, 1.0f) * transform);
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update(glm::vec4(min.x, max.y, min.z, 1.0f) * transform);
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update(glm::vec4(min.x, max.y, max.z, 1.0f) * transform);
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update(glm::vec4(max.x, min.y, min.z, 1.0f) * transform);
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update(glm::vec4(max.x, min.y, max.z, 1.0f) * transform);
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update(glm::vec4(max.x, max.y, min.z, 1.0f) * transform);
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update(glm::vec4(max, 1.0f) * transform);
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}
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glm::vec3 AABB::get_scale() const
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{
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return (max - min);
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}
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glm::vec3 AABB::get_center() const
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{
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return (min + max) * 0.5f;
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}
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glm::vec3 AABB::get_min() const
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{
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return min;
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}
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glm::vec3 AABB::get_max() const
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{
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return max;
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}
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void AABB::reset()
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{
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min = std::numeric_limits<glm::vec3>::max();
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max = std::numeric_limits<glm::vec3>::min();
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}
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} // namespace sg
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} // namespace vkb
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