bounding_box3.h

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// Copyright (c) 2018 Doyub Kim
//
// I am making my contributions/submissions to this project solely in my
// personal capacity and am not conveying any rights to any intellectual
// property of any third parties.
 
#ifndef INCLUDE_JET_BOUNDING_BOX3_H_
#define INCLUDE_JET_BOUNDING_BOX3_H_
 
#include <jet/bounding_box.h>
#include <jet/ray3.h>
#include <jet/vector3.h>
#include <limits>
 
namespace jet {
 
template <typename T>
struct BoundingBoxRayIntersection3 {
    bool isIntersecting = false;
 
    T tNear = std::numeric_limits<T>::max();
 
    T tFar = std::numeric_limits<T>::max();
};
 
template <typename T>
class BoundingBox<T, 3> {
 public:
    Vector3<T> lowerCorner;
 
    Vector3<T> upperCorner;
 
    BoundingBox();
 
    BoundingBox(const Vector3<T>& point1, const Vector3<T>& point2);
 
    BoundingBox(const BoundingBox& other);
 
    T width() const;
 
    T height() const;
 
    T depth() const;
 
    T length(size_t axis);
 
    bool overlaps(const BoundingBox& other) const;
 
    bool contains(const Vector3<T>& point) const;
 
    bool intersects(const Ray3<T>& ray) const;
 
    BoundingBoxRayIntersection3<T> closestIntersection(
        const Ray3<T>& ray) const;
 
    Vector3<T> midPoint() const;
 
    T diagonalLength() const;
 
    T diagonalLengthSquared() const;
 
    void reset();
 
    void merge(const Vector3<T>& point);
 
    void merge(const BoundingBox& other);
 
    void expand(T delta);
 
    Vector3<T> corner(size_t idx) const;
 
    Vector3<T> clamp(const Vector3<T>& point) const;
 
    bool isEmpty() const;
};
 
template <typename T>
using BoundingBox3 = BoundingBox<T, 3>;
 
typedef BoundingBox3<float> BoundingBox3F;
 
typedef BoundingBox3<double> BoundingBox3D;
 
typedef BoundingBoxRayIntersection3<float> BoundingBoxRayIntersection3F;
 
typedef BoundingBoxRayIntersection3<double> BoundingBoxRayIntersection3D;
 
}  // namespace jet
 
#include "detail/bounding_box3-inl.h"
 
#endif  // INCLUDE_JET_BOUNDING_BOX3_H_