cs237-vec4.hxx

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/*
 * COPYRIGHT (c) 2013 John Reppy (http://cs.uchicago.edu/~jhr)
 * All rights reserved.
 */

#ifndef _CS237_VEC4_HXX_
#define _CS237_VEC4_HXX_

#ifndef _CS237_HXX_
#error "c237-vec4.hxx should not be included directly"
#endif

namespace cs237 {

    namespace __detail {

    template <typename T>
    struct vec4 {
        T x, y, z, w;

        vec4 () : x(T(0)), y(T(0)), z(T(0)), w(T(0)) { }
        vec4 (vec4 const &v) : x(v.x), y(v.y), z(v.z), w(v.w) { }
        explicit vec4 (T xx) : x(xx), y(T(0)), z(T(0)), w(T(0)) { }
        explicit vec4 (T xx, T yy) : x(xx), y(yy), z(T(0)), w(T(0)) { }
        explicit vec4 (T xx, T yy, T zz) : x(xx), y(yy), z(zz), w(T(0)) { }
        explicit vec4 (T xx, T yy, T zz, T ww) : x(xx), y(yy), z(zz), w(ww) { }
        explicit vec4 (vec2<T> const &v) : x(v.x), y(v.y), z(T(0)), w(T(0)) { }
        explicit vec4 (vec2<T> const &v, T zz) : x(v.x), y(v.y), z(zz), w(T(0)) { }
        explicit vec4 (vec2<T> const &v, T zz, T ww) : x(v.x), y(v.y), z(zz), w(ww) { }
        explicit vec4 (vec3<T> const &v) : x(v.x), y(v.y), z(v.z), w(T(0)) { }
        explicit vec4 (vec3<T> const &v, T ww) : x(v.x), y(v.y), z(v.z), w(ww) { }

        T & operator[] (unsigned int const &i);
        T const & operator[] (unsigned int const &i) const;

        vec4 & operator= (vec4 const &v);

        vec4 & operator+= (T const &s);
        vec4 & operator+= (vec4 const &v);

        vec4 & operator-= (T const &s);
        vec4 & operator-= (vec4 const &v);

        vec4 & operator*= (T const &s);
        vec4 & operator*= (vec4 const &v);

        vec4 & operator/= (T const &s);

        T length () const;
        vec4 & normalize ();
    };

    template <typename T>
    std::ostream& operator<< (std::ostream& s, vec4<T> const &v);

    } /* _namespace __detail */

    typedef __detail::vec4<float> vec4f;
    typedef __detail::vec4<double> vec4d;

} /* namespace cs237 */

#endif /* !_CS237_VEC4_HXX_ */