bounding_box2.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_BOX2_H_
#define INCLUDE_JET_BOUNDING_BOX2_H_
 
#include <jet/bounding_box.h>
#include <jet/ray2.h>
#include <jet/vector2.h>
#include <limits>
 
namespace jet {
 
template <typename T>
struct BoundingBoxRayIntersection2 {
    bool isIntersecting = false;
 
    T tNear = std::numeric_limits<T>::max();
 
    T tFar = std::numeric_limits<T>::max();
};
 
template <typename T>
class BoundingBox<T, 2> {
 public:
    Vector2<T> lowerCorner;
 
    Vector2<T> upperCorner;
 
    BoundingBox();
 
    BoundingBox(const Vector2<T>& point1, const Vector2<T>& point2);
 
    BoundingBox(const BoundingBox& other);
 
    T width() const;
 
    T height() const;
 
    T length(size_t axis);
 
    bool overlaps(const BoundingBox& other) const;
 
    bool contains(const Vector2<T>& point) const;
 
    bool intersects(const Ray2<T>& ray) const;
 
    BoundingBoxRayIntersection2<T> closestIntersection(
        const Ray2<T>& ray) const;
 
    Vector2<T> midPoint() const;
 
    T diagonalLength() const;
 
    T diagonalLengthSquared() const;
 
    void reset();
 
    void merge(const Vector2<T>& point);
 
    void merge(const BoundingBox& other);
 
    void expand(T delta);
 
    Vector2<T> corner(size_t idx) const;
 
    Vector2<T> clamp(const Vector2<T>& pt) const;
 
    bool isEmpty() const;
};
 
template <typename T>
using BoundingBox2 = BoundingBox<T, 2>;
 
typedef BoundingBox2<float> BoundingBox2F;
 
typedef BoundingBox2<double> BoundingBox2D;
 
typedef BoundingBoxRayIntersection2<float> BoundingBoxRayIntersection2F;
 
typedef BoundingBoxRayIntersection2<double> BoundingBoxRayIntersection2D;
 
}  // namespace jet
 
#include "detail/bounding_box2-inl.h"
 
#endif  // INCLUDE_JET_BOUNDING_BOX2_H_