79 lines
No EOL
1.5 KiB
C++
79 lines
No EOL
1.5 KiB
C++
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#ifndef SPECTRE_MATH_MATRIX3_H
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#define SPECTRE_MATH_MATRIX3_H
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// 3x3 matrix implementation.
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#include <iostream>
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#include <Spectre/Math/Vector2.h>
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template<typename T>
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struct Matrix3
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{
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/* Column-major order are used for the matrices here to be compatible with OpenGL.
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_ _
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| 0 3 6 |
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| 1 4 7 |
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| 2 5 8 |
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|_ _|
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*/
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union {
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T m[3][3]; // format: [col][row]
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T v[9];
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};
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static Matrix3<T> Identity;
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static Matrix3<T> Zero;
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inline Matrix3();
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inline Matrix3( T a, T b, T c,
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T d, T e, T f,
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T g, T h, T i);
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inline Matrix3(T *a);
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// -----------------
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// Copy & Assignment.
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// -----------------
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inline Matrix3<T>& operator=(const Matrix3<T>& mat);
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// -----------------
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// Compare
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// -----------------
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inline bool operator==(const Matrix3<T>& mat) const;
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inline bool operator!=(const Matrix3<T>& mat) const;
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// -----------------
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// Arithmetic: Matrix-Matrix
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// -----------------
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inline Matrix3<T> operator*(const Matrix3<T>& mat) const;
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inline Matrix3<T> operator*=(const Matrix3<T>& mat);
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// Need scalar, vector arithmetic?
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// -----------------
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// Named operations.
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// -----------------
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// Determinant.
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float det() const;
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// Transpose matrix.
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Matrix3<T> transpose() const;
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};
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template <typename T>
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inline std::ostream& operator<<(std::ostream &s, const Matrix3<T>& v);
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typedef Matrix3<float> Matrix3f;
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typedef Matrix3<double> Matrix3d;
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typedef Matrix3<int> Matrix3i;
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typedef Matrix3<unsigned> Matrix3u;
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#include "Matrix3.inl"
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#endif /* SPECTRE_MATH_MATRIX3_H */ |