comparison: src/types/matrix.h
src/types/matrix.h
- changeset 1403
- 7a2d84112983
- parent 1402
- 8bbf2af8c3f5
- child 1404
- 16eb4257e662
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| 1402:8bbf2af8c3f5 | 1403:7a2d84112983 |
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| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013 - 2018 Teemu Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #pragma once | |
| 20 #include <QString> | |
| 21 #include <QMetaType> | |
| 22 | |
| 23 /* | |
| 24 * A mathematical 3 × 3 matrix | |
| 25 */ | |
| 26 class Matrix | |
| 27 { | |
| 28 public: | |
| 29 class RowView; | |
| 30 class ConstRowView; | |
| 31 | |
| 32 Matrix(); | |
| 33 Matrix (const std::initializer_list<double>& values); | |
| 34 Matrix (double fillval); | |
| 35 | |
| 36 double* begin(); | |
| 37 const double* begin() const; | |
| 38 double determinant() const; | |
| 39 double* end(); | |
| 40 const double* end() const; | |
| 41 Matrix multiply(const Matrix& other) const; | |
| 42 QString toString() const; | |
| 43 double& value(int index); | |
| 44 const double& value(int index) const; | |
| 45 void zero(); | |
| 46 | |
| 47 bool operator==(const Matrix& other) const; | |
| 48 bool operator!=(const Matrix& other) const; | |
| 49 Matrix operator*(const Matrix& other) const; | |
| 50 RowView operator[](int row); | |
| 51 ConstRowView operator[](int row) const; | |
| 52 double& operator()(int row, int column); | |
| 53 const double& operator()(int row, int column) const; | |
| 54 Matrix& operator*=(const Matrix& other); | |
| 55 | |
| 56 static const Matrix identity; | |
| 57 static Matrix fromQMatrix(const QMatrix4x4& matrix); | |
| 58 static Matrix scaleMatrix(qreal scalar); | |
| 59 | |
| 60 private: | |
| 61 double m_values[9]; | |
| 62 }; | |
| 63 | |
| 64 Q_DECLARE_METATYPE(Matrix) | |
| 65 | |
| 66 /* | |
| 67 * A structure that provides a view into a row in a matrix. | |
| 68 * This is returned by operator[] so that the matrix can be accessed by A[i][j] | |
| 69 */ | |
| 70 class Matrix::RowView | |
| 71 { | |
| 72 public: | |
| 73 RowView(Matrix &matrix, int row); | |
| 74 double& operator[](int column); | |
| 75 Matrix& matrix() const; | |
| 76 int row(); | |
| 77 | |
| 78 private: | |
| 79 Matrix& _matrix; | |
| 80 const int _row; | |
| 81 }; | |
| 82 | |
| 83 /* | |
| 84 * Const version of the above | |
| 85 */ | |
| 86 class Matrix::ConstRowView | |
| 87 { | |
| 88 public: | |
| 89 ConstRowView(const Matrix &matrix, int row); | |
| 90 const double& operator[](int column); | |
| 91 const Matrix& matrix() const; | |
| 92 int row(); | |
| 93 | |
| 94 private: | |
| 95 const Matrix& _matrix; | |
| 96 const int _row; | |
| 97 }; |
