cs237-aabb.hxx

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/*
 * COPYRIGHT (c) 2015 John Reppy (http://cs.uchicago.edu/~jhr)
 * All rights reserved.
 */

#ifndef _CS237_AABB_HXX_
#define _CS237_AABB_HXX_

#ifndef _CS237_HXX_
#  error "c237-aabb.hxx should not be included directly"
#endif

namespace cs237 {

    namespace __detail {

    template <typename T>
    struct AABB {
        vec3<T> _min, _max;
        bool _empty;

        AABB () : _min(), _max(), _empty(true) {}
        AABB (AABB const & bbox) : _min(bbox._min), _max(bbox._max), _empty(bbox._empty) {}
        AABB (vec3<T> const &pt) : _min(pt), _max(pt), _empty(false) {}
        AABB (vec3<T> const &min, vec3<T> const &max) : _min(min), _max(max), _empty(false) {}

        bool isEmpty () const;

        void clear ();

        bool includesPt (vec3<T> const &pt) const;

        T distanceToPt (vec3<T> const &pt) const;

        void addPt (vec3<T> const &pt);

        AABB & operator+= (AABB const &bb);

        AABB & operator+= (vec3<T> const &pt);

      /***** Warning: the following functions are undefined on empty boxes! *****/

        vec3<T> const & min() const;

        vec3<T> const & max() const;

        vec3<T> center () const;

        T minX () const;
        T minY () const;
        T minZ () const;
        T maxX () const;
        T maxY () const;
        T maxZ () const;

        vec3<T> corner (int i) const;
    };

    template <typename T>
    std::ostream& operator<< (std::ostream& s, __detail::AABB<T> const &bb);

    } // namespace __detail

    typedef __detail::AABB<float> AABBf;
    typedef __detail::AABB<double> AABBd;

} //namespace cs237

#endif /* !_CS237_AABB_HXX_ */