💿🐜 Antkeeper source code
https://antkeeper.com
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95 lines
2.9 KiB
95 lines
2.9 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_GEOM_BOUNDING_VOLUME_HPP
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#define ANTKEEPER_GEOM_BOUNDING_VOLUME_HPP
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#include "math/math.hpp"
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#include <stdexcept>
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namespace geom {
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template <class T>
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struct sphere;
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template <class T>
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struct aabb;
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/// Enumerates bounding volume types.
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enum class bounding_volume_type
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{
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aabb, ///< Indicates the bounding volume is an axis-aligned bounding box.
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sphere, ///< Indicates the bounding volume is a sphere.
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convex_hull ///< Indicates the bounding volume is a convex hull.
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};
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/**
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* Abstract base class for bounding volumes.
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*
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* @tparam T Scalar type.
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*/
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template <class T>
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class bounding_volume
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{
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public:
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/// Returns the enumerated type of this bounding volume.
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virtual bounding_volume_type get_bounding_volume_type() const = 0;
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/// Tests for intersection between this bounding volume and a bounding sphere.
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virtual bool intersects(const sphere<T>& sphere) const = 0;
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/// Tests for intersection between this bounding volume and an axis-aligned bounding box.
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virtual bool intersects(const aabb<T>& aabb) const = 0;
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/// Tests whether this bounding volume contains a sphere.
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virtual bool contains(const sphere<T>& sphere) const = 0;
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/// Tests whether this bounding volume contains an axis-aligned bounding box.
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virtual bool contains(const aabb<T>& aabb) const = 0;
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/// Tests whether this bounding volume contains a point.
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virtual bool contains(const math::vector<T, 3>& point) const = 0;
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/// Tests for intersection between this bounding volume and another bounding volume.
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bool intersects(const bounding_volume& volume) const;
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};
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/// Tests for intersection between this bounding volume and another bounding volume.
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template <class T>
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bool bounding_volume<T>::intersects(const bounding_volume& volume) const
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{
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const bounding_volume_type type = volume.get_bounding_volume_type();
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switch (type)
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{
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case bounding_volume_type::sphere:
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return intersects(static_cast<const sphere<T>&>(volume));
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break;
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case bounding_volume_type::aabb:
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return intersects(static_cast<const aabb<T>&>(volume));
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break;
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default:
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throw std::runtime_error("unimplemented");
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break;
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}
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}
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} // namespace geom
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#endif // ANTKEEPER_GEOM_BOUNDING_VOLUME_HPP
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