cs237-mat2x2.hxx

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

#ifndef _CS237_MAT2X2_HXX_
#define _CS237_MAT2X2_HXX_

#ifndef _CS237_HXX_
#error "c237-mat2x2.hxx should not be included directly"
#endif

namespace cs237 {

    namespace __detail {

    template <typename T>
    struct mat2x2 {
        vec2<T> cv[2];  // column vectors

        mat2x2 () {}
        mat2x2 (mat2x2 const &m);
        explicit mat2x2 (
        T m00, T m10,   // first column
        T m01, T m11);  // second column
        explicit mat2x2 (vec2<T> const &c0, vec2<T> const &c1);
        explicit mat2x2 (mat3x3<T> const &mm);
        explicit mat2x2 (mat2x3<T> const &mm);
        explicit mat2x2 (mat3x2<T> const &mm);
        explicit mat2x2 (T const &x);

        vec2<T> & operator[] (unsigned int const &i);
        vec2<T> const & operator[] (unsigned int const &i) const;

        mat2x2 & operator= (mat2x2 const &mm);

        mat2x2 & operator+= (T const &s);
        mat2x2 & operator+= (mat2x2 const &v);

        mat2x2 & operator-= (T const &s);
        mat2x2 & operator-= (mat2x2 const &v);

        mat2x2 & operator*= (T const &s);
        mat2x2 & operator*= (mat2x2 const &m);

        mat2x2 inverse() const;

        mat2x2 transpose() const;

        T determinant() const;
    };

    template <typename T>
    std::ostream& operator<< (std::ostream& s, mat2x2<T> const &m);

    } /* _namespace __detail */

    typedef __detail::mat2x2<float> mat2x2f;
    typedef __detail::mat2x2<double> mat2x2d;
    typedef mat2x2f mat2f;
    typedef mat2x2d mat2d;

} /* namespace cs237 */

#endif /* !_CS237_MAT2X2_HXX_ */