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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/
#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
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