/*
* Copyright (C) 2021 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 .
*/
#ifndef ANTKEEPER_GEOM_BOUNDING_VOLUME_HPP
#define ANTKEEPER_GEOM_BOUNDING_VOLUME_HPP
#include "math/math.hpp"
#include
namespace geom {
template
struct sphere;
template
struct aabb;
/// Enumerates bounding volume types.
enum class bounding_volume_type
{
aabb, ///< Indicates the bounding volume is an axis-aligned bounding box.
sphere, ///< Indicates the bounding volume is a sphere.
convex_hull ///< Indicates the bounding volume is a convex hull.
};
/**
* Abstract base class for bounding volumes.
*
* @tparam T Scalar type.
*/
template
class bounding_volume
{
public:
/// Returns the enumerated type of this bounding volume.
virtual bounding_volume_type get_bounding_volume_type() const = 0;
/// Tests for intersection between this bounding volume and a bounding sphere.
virtual bool intersects(const sphere& sphere) const = 0;
/// Tests for intersection between this bounding volume and an axis-aligned bounding box.
virtual bool intersects(const aabb& aabb) const = 0;
/// Tests whether this bounding volume contains a sphere.
virtual bool contains(const sphere& sphere) const = 0;
/// Tests whether this bounding volume contains an axis-aligned bounding box.
virtual bool contains(const aabb& aabb) const = 0;
/// Tests whether this bounding volume contains a point.
virtual bool contains(const math::vector& point) const = 0;
/// Tests for intersection between this bounding volume and another bounding volume.
bool intersects(const bounding_volume& volume) const;
};
/// Tests for intersection between this bounding volume and another bounding volume.
template
bool bounding_volume::intersects(const bounding_volume& volume) const
{
const bounding_volume_type type = volume.get_bounding_volume_type();
switch (type)
{
case bounding_volume_type::sphere:
return intersects(static_cast&>(volume));
break;
case bounding_volume_type::aabb:
return intersects(static_cast&>(volume));
break;
default:
throw std::runtime_error("unimplemented");
break;
}
}
} // namespace geom
#endif // ANTKEEPER_GEOM_BOUNDING_VOLUME_HPP