TMatrix2.h

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#pragma once
 
#include "Math/math_fwd.h"
 
#include <cstddef>
#include <array>
#include <string>
 
namespace ph::math
{
 
template<typename T>
class TMatrix2 final
{
public:
    static TMatrix2 makeIdentity();
 
public:
    using Elements = std::array<std::array<T, 2>, 2>;
 
    Elements m;
 
    inline TMatrix2() = default;
    explicit TMatrix2(T value);
    TMatrix2(T m00, T m01, T m10, T m11);
    TMatrix2(const TVector2<T>& m00m01, const TVector2<T>& m10m11);
    inline TMatrix2(const TMatrix2& other) = default;
 
    template<typename U>
    explicit TMatrix2(const TMatrix2<U>& other);
 
    TMatrix2& initIdentity();
    TMatrix2 mul(const TMatrix2& rhs) const;
    TMatrix2 mul(T value) const;
    void mul(const TMatrix2& rhs, TMatrix2* out_result) const;
    TMatrix2& mulLocal(T value);
    TMatrix2 inverse() const;
    T determinant() const;
 
    // TODO: make solve() methods accepts all "subscriptable" types to (potentially) 
    // improve performance & less code duplications
 
    bool solve(
        const std::array<T, 2>& b,
        std::array<T, 2>*       out_x) const;
 
    bool solve(
        const TVector2<T>& b,
        TVector2<T>*       out_x) const;
 
    template<std::size_t N>
    bool solve(
        const std::array<std::array<T, 2>, N>& bs, 
        std::array<std::array<T, 2>, N>*       out_xs) const;
 
    std::string toString() const;
};
 
}// end namespace ph::math
 
#include "Math/TMatrix2.ipp"