comparison: src/types/matrix.h
src/types/matrix.h
- changeset 1068
- 283de3bd8b0e
- parent 1037
- 4a9185e94d78
- child 1069
- 220cde0fa2d9
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| 1067:819973864620 | 1068:283de3bd8b0e |
|---|---|
| 17 */ | 17 */ |
| 18 | 18 |
| 19 #pragma once | 19 #pragma once |
| 20 #include <QString> | 20 #include <QString> |
| 21 | 21 |
| 22 /** | 22 /* |
| 23 * @brief The Matrix class | |
| 24 * A mathematical 3 x 3 matrix | 23 * A mathematical 3 x 3 matrix |
| 25 */ | 24 */ |
| 26 class Matrix | 25 class Matrix |
| 27 { | 26 { |
| 28 public: | 27 public: |
| 28 class RowView; | |
| 29 class ConstRowView; | |
| 30 | |
| 29 Matrix(); | 31 Matrix(); |
| 30 Matrix (const std::initializer_list<double>& values); | 32 Matrix (const std::initializer_list<double>& values); |
| 31 Matrix (double fillval); | 33 Matrix (double fillval); |
| 32 Matrix (double values[]); | 34 Matrix (double values[]); |
| 33 | 35 |
| 36 double* begin(); | |
| 37 const double* begin() const; | |
| 34 double determinant() const; | 38 double determinant() const; |
| 35 Matrix multiply (const Matrix& other) const; | |
| 36 void dump() const; | 39 void dump() const; |
| 40 double* end(); | |
| 41 const double* end() const; | |
| 42 Matrix multiply(const Matrix& other) const; | |
| 37 QString toString() const; | 43 QString toString() const; |
| 44 double& value(int index); | |
| 45 const double& value(int index) const; | |
| 38 void zero(); | 46 void zero(); |
| 47 | |
| 39 bool operator==(const Matrix& other) const; | 48 bool operator==(const Matrix& other) const; |
| 40 bool operator!=(const Matrix& other) const; | 49 bool operator!=(const Matrix& other) const; |
| 41 | 50 Matrix operator*(const Matrix& other) const; |
| 42 /// @returns a mutable reference to a value by @c idx. | 51 RowView operator[](int row); |
| 43 inline double& value (int idx) { return m_values[idx]; } | 52 ConstRowView operator[](int row) const; |
| 44 | 53 double& operator()(int row, int column); |
| 45 /// @returns a const reference to a value by @c idx. | 54 const double& operator()(int row, int column) const; |
| 46 inline const double& value (int idx) const { return m_values[idx]; } | |
| 47 | |
| 48 /// @returns this matrix multiplied by @c other. | |
| 49 inline Matrix operator* (const Matrix& other) const { return multiply (other); } | |
| 50 | |
| 51 /// @returns a mutable reference to a value by @c idx. | |
| 52 inline double& operator[] (int idx) { return value(idx); } | |
| 53 | |
| 54 /// @returns a const reference to a value by @c idx. | |
| 55 inline const double& operator[] (int idx) const { return value (idx); } | |
| 56 | 55 |
| 57 private: | 56 private: |
| 58 double m_values[9]; | 57 double m_values[9]; |
| 59 }; | 58 }; |
| 59 | |
| 60 /* | |
| 61 * A structure that provides a view into a row in a matrix. | |
| 62 * This is returned by operator[] so that the matrix can be accessed by A[i][j] | |
| 63 */ | |
| 64 class Matrix::RowView | |
| 65 { | |
| 66 public: | |
| 67 RowView(Matrix &matrix, int row); | |
| 68 double& operator[](int column); | |
| 69 Matrix& matrix() const; | |
| 70 int row(); | |
| 71 | |
| 72 private: | |
| 73 Matrix& _matrix; | |
| 74 const int _row; | |
| 75 }; | |
| 76 | |
| 77 /* | |
| 78 * Const version of the above | |
| 79 */ | |
| 80 class Matrix::ConstRowView | |
| 81 { | |
| 82 public: | |
| 83 ConstRowView(const Matrix &matrix, int row); | |
| 84 const double& operator[](int column); | |
| 85 const Matrix& matrix() const; | |
| 86 int row(); | |
| 87 | |
| 88 private: | |
| 89 const Matrix& _matrix; | |
| 90 const int _row; | |
| 91 }; |
