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Diffstat (limited to 'src/gui/math3d/qgenericmatrix.h')
| -rw-r--r-- | src/gui/math3d/qgenericmatrix.h | 395 |
1 files changed, 395 insertions, 0 deletions
diff --git a/src/gui/math3d/qgenericmatrix.h b/src/gui/math3d/qgenericmatrix.h new file mode 100644 index 0000000..3224ae2 --- /dev/null +++ b/src/gui/math3d/qgenericmatrix.h @@ -0,0 +1,395 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QGENERICMATRIX_H +#define QGENERICMATRIX_H + +#include <QtCore/qmetatype.h> +#include <QtCore/qdebug.h> +#include <QtCore/qdatastream.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Gui) + +template <int N, int M, typename T> +class QGenericMatrix +{ +public: + QGenericMatrix(); + QGenericMatrix(const QGenericMatrix<N, M, T>& other); + explicit QGenericMatrix(const T *values); + + const T& operator()(int row, int column) const; + T& operator()(int row, int column); + + bool isIdentity() const; + void setToIdentity(); + + void fill(T value); + + QGenericMatrix<M, N, T> transposed() const; + + QGenericMatrix<N, M, T>& operator+=(const QGenericMatrix<N, M, T>& other); + QGenericMatrix<N, M, T>& operator-=(const QGenericMatrix<N, M, T>& other); + QGenericMatrix<N, M, T>& operator*=(T factor); + QGenericMatrix<N, M, T>& operator/=(T divisor); + bool operator==(const QGenericMatrix<N, M, T>& other) const; + bool operator!=(const QGenericMatrix<N, M, T>& other) const; + + void copyDataTo(T *values) const; + + T *data() { return m[0]; } + const T *data() const { return m[0]; } + const T *constData() const { return m[0]; } + +#if !defined(Q_NO_TEMPLATE_FRIENDS) + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator+(const QGenericMatrix<NN, MM, TT>& m1, const QGenericMatrix<NN, MM, TT>& m2); + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator-(const QGenericMatrix<NN, MM, TT>& m1, const QGenericMatrix<NN, MM, TT>& m2); + template<int NN, int M1, int M2, typename TT> + friend QGenericMatrix<M1, M2, TT> operator*(const QGenericMatrix<NN, M2, TT>& m1, const QGenericMatrix<M1, NN, TT>& m2); + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator-(const QGenericMatrix<NN, MM, TT>& matrix); + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator*(TT factor, const QGenericMatrix<NN, MM, TT>& matrix); + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator*(const QGenericMatrix<NN, MM, TT>& matrix, TT factor); + template<int NN, int MM, typename TT> + friend QGenericMatrix<NN, MM, TT> operator/(const QGenericMatrix<NN, MM, TT>& matrix, TT divisor); + +private: +#endif + T m[N][M]; // Column-major order to match OpenGL. + + QGenericMatrix(int) {} // Construct without initializing identity matrix. + +#if !defined(Q_NO_TEMPLATE_FRIENDS) + template <int NN, int MM, typename TT> + friend class QGenericMatrix; +#endif +}; + +template <int N, int M, typename T> +Q_INLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix() +{ + setToIdentity(); +} + +template <int N, int M, typename T> +Q_INLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix(const QGenericMatrix<N, M, T>& other) +{ + for (int col = 0; col < N; ++col) + for (int row = 0; row < M; ++row) + m[col][row] = other.m[col][row]; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>::QGenericMatrix(const T *values) +{ + for (int col = 0; col < N; ++col) + for (int row = 0; row < M; ++row) + m[col][row] = values[row * N + col]; +} + +template <int N, int M, typename T> +Q_INLINE_TEMPLATE const T& QGenericMatrix<N, M, T>::operator()(int row, int column) const +{ + Q_ASSERT(row >= 0 && row < M && column >= 0 && column < N); + return m[column][row]; +} + +template <int N, int M, typename T> +Q_INLINE_TEMPLATE T& QGenericMatrix<N, M, T>::operator()(int row, int column) +{ + Q_ASSERT(row >= 0 && row < M && column >= 0 && column < N); + return m[column][row]; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T>::isIdentity() const +{ + for (int col = 0; col < N; ++col) { + for (int row = 0; row < M; ++row) { + if (row == col) { + if (m[col][row] != 1.0f) + return false; + } else { + if (m[col][row] != 0.0f) + return false; + } + } + } + return true; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T>::setToIdentity() +{ + for (int col = 0; col < N; ++col) { + for (int row = 0; row < M; ++row) { + if (row == col) + m[col][row] = 1.0f; + else + m[col][row] = 0.0f; + } + } +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T>::fill(T value) +{ + for (int col = 0; col < N; ++col) + for (int row = 0; row < M; ++row) + m[col][row] = value; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<M, N, T> QGenericMatrix<N, M, T>::transposed() const +{ + QGenericMatrix<M, N, T> result(1); + for (int row = 0; row < M; ++row) + for (int col = 0; col < N; ++col) + result.m[row][col] = m[col][row]; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>& QGenericMatrix<N, M, T>::operator+=(const QGenericMatrix<N, M, T>& other) +{ + for (int index = 0; index < N * M; ++index) + m[0][index] += other.m[0][index]; + return *this; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>& QGenericMatrix<N, M, T>::operator-=(const QGenericMatrix<N, M, T>& other) +{ + for (int index = 0; index < N * M; ++index) + m[0][index] -= other.m[0][index]; + return *this; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>& QGenericMatrix<N, M, T>::operator*=(T factor) +{ + for (int index = 0; index < N * M; ++index) + m[0][index] *= factor; + return *this; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T>::operator==(const QGenericMatrix<N, M, T>& other) const +{ + for (int index = 0; index < N * M; ++index) { + if (m[0][index] != other.m[0][index]) + return false; + } + return true; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T>::operator!=(const QGenericMatrix<N, M, T>& other) const +{ + for (int index = 0; index < N * M; ++index) { + if (m[0][index] != other.m[0][index]) + return true; + } + return false; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T>& QGenericMatrix<N, M, T>::operator/=(T divisor) +{ + for (int index = 0; index < N * M; ++index) + m[0][index] /= divisor; + return *this; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator+(const QGenericMatrix<N, M, T>& m1, const QGenericMatrix<N, M, T>& m2) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = m1.m[0][index] + m2.m[0][index]; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M, T>& m1, const QGenericMatrix<N, M, T>& m2) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = m1.m[0][index] - m2.m[0][index]; + return result; +} + +template <int N, int M1, int M2, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<M1, M2, T> operator*(const QGenericMatrix<N, M2, T>& m1, const QGenericMatrix<M1, N, T>& m2) +{ + QGenericMatrix<M1, M2, T> result(1); + for (int row = 0; row < M2; ++row) { + for (int col = 0; col < M1; ++col) { + T sum(0.0f); + for (int j = 0; j < N; ++j) + sum += m1.m[j][row] * m2.m[col][j]; + result.m[col][row] = sum; + } + } + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator-(const QGenericMatrix<N, M, T>& matrix) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = -matrix.m[0][index]; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(T factor, const QGenericMatrix<N, M, T>& matrix) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = matrix.m[0][index] * factor; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator*(const QGenericMatrix<N, M, T>& matrix, T factor) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = matrix.m[0][index] * factor; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T> operator/(const QGenericMatrix<N, M, T>& matrix, T divisor) +{ + QGenericMatrix<N, M, T> result(1); + for (int index = 0; index < N * M; ++index) + result.m[0][index] = matrix.m[0][index] / divisor; + return result; +} + +template <int N, int M, typename T> +Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T>::copyDataTo(T *values) const +{ + for (int col = 0; col < N; ++col) + for (int row = 0; row < M; ++row) + values[row * N + col] = T(m[col][row]); +} + +// Define aliases for the useful variants of QGenericMatrix. +typedef QGenericMatrix<2, 2, qreal> QMatrix2x2; +typedef QGenericMatrix<2, 3, qreal> QMatrix2x3; +typedef QGenericMatrix<2, 4, qreal> QMatrix2x4; +typedef QGenericMatrix<3, 2, qreal> QMatrix3x2; +typedef QGenericMatrix<3, 3, qreal> QMatrix3x3; +typedef QGenericMatrix<3, 4, qreal> QMatrix3x4; +typedef QGenericMatrix<4, 2, qreal> QMatrix4x2; +typedef QGenericMatrix<4, 3, qreal> QMatrix4x3; + +#ifndef QT_NO_DEBUG_STREAM + +template <int N, int M, typename T> +QDebug operator<<(QDebug dbg, const QGenericMatrix<N, M, T> &m) +{ + dbg.nospace() << "QGenericMatrix<" << N << ", " << M + << ", " << QTypeInfo<T>::name() + << ">(" << endl << qSetFieldWidth(10); + for (int row = 0; row < M; ++row) { + for (int col = 0; col < N; ++col) + dbg << m(row, col); + dbg << endl; + } + dbg << qSetFieldWidth(0) << ')'; + return dbg.space(); +} + +#endif + +#ifndef QT_NO_DATASTREAM + +template <int N, int M, typename T> +QDataStream &operator<<(QDataStream &stream, const QGenericMatrix<N, M, T> &matrix) +{ + for (int row = 0; row < M; ++row) + for (int col = 0; col < N; ++col) + stream << double(matrix(row, col)); + return stream; +} + +template <int N, int M, typename T> +QDataStream &operator>>(QDataStream &stream, QGenericMatrix<N, M, T> &matrix) +{ + double x; + for (int row = 0; row < M; ++row) { + for (int col = 0; col < N; ++col) { + stream >> x; + matrix(row, col) = T(x); + } + } + return stream; +} + +#endif + +QT_END_NAMESPACE + +Q_DECLARE_METATYPE(QMatrix2x2) +Q_DECLARE_METATYPE(QMatrix2x3) +Q_DECLARE_METATYPE(QMatrix2x4) +Q_DECLARE_METATYPE(QMatrix3x2) +Q_DECLARE_METATYPE(QMatrix3x3) +Q_DECLARE_METATYPE(QMatrix3x4) +Q_DECLARE_METATYPE(QMatrix4x2) +Q_DECLARE_METATYPE(QMatrix4x3) + +QT_END_HEADER + +#endif |