Long live Qt!

1 files changed, 341 insertions, 0 deletions

diff --git a/src/gui/math3d/qgenericmatrix.h b/src/gui/math3d/qgenericmatrix.h
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+++ b/src/gui/math3d/qgenericmatrix.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGENERICMATRIX_H
+#define QGENERICMATRIX_H
+
+#include <QtGui/qmath3dglobal.h>
+#include <QtCore/qmetatype.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+template <int N, int M, typename T, typename InnerT = T>
+class QGenericMatrix
+{
+public:
+    QGenericMatrix();
+    QGenericMatrix(const QGenericMatrix<N, M, T, InnerT>& other);
+    explicit QGenericMatrix(const T *values);
+
+    T operator()(int row, int column) const;
+    InnerT& operator()(int row, int column);
+
+    bool isIdentity() const;
+    void setIdentity();
+
+    void fill(qreal value);
+
+    QGenericMatrix<M, N, T, InnerT> transposed() const;
+
+    QGenericMatrix<N, M, T, InnerT>& operator+=(const QGenericMatrix<N, M, T, InnerT>& other);
+    QGenericMatrix<N, M, T, InnerT>& operator-=(const QGenericMatrix<N, M, T, InnerT>& other);
+    QGenericMatrix<N, M, T, InnerT>& operator*=(T factor);
+    QGenericMatrix<N, M, T, InnerT>& operator/=(T divisor);
+    bool operator==(const QGenericMatrix<N, M, T, InnerT>& other) const;
+    bool operator!=(const QGenericMatrix<N, M, T, InnerT>& other) const;
+
+    void toValueArray(T *values);
+
+    InnerT *data() { return m[0]; }
+    const InnerT *data() const { return m[0]; }
+    const InnerT *constData() const { return m[0]; }
+
+#if !defined(Q_NO_TEMPLATE_FRIENDS)
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator+(const QGenericMatrix<NN, MM, TT, ITT>& m1, const QGenericMatrix<NN, MM, TT, ITT>& m2);
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator-(const QGenericMatrix<NN, MM, TT, ITT>& m1, const QGenericMatrix<NN, MM, TT, ITT>& m2);
+    template<int NN, int M1, int M2, typename TT, typename ITT>
+    friend QGenericMatrix<M1, M2, TT, ITT> operator*(const QGenericMatrix<NN, M2, TT, ITT>& m1, const QGenericMatrix<M1, NN, TT, ITT>& m2);
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator-(const QGenericMatrix<NN, MM, TT, ITT>& matrix);
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator*(TT factor, const QGenericMatrix<NN, MM, TT, ITT>& matrix);
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator*(const QGenericMatrix<NN, MM, TT, ITT>& matrix, TT factor);
+    template<int NN, int MM, typename TT, typename ITT>
+    friend QGenericMatrix<NN, MM, TT, ITT> operator/(const QGenericMatrix<NN, MM, TT, ITT>& matrix, TT divisor);
+
+private:
+#endif
+    InnerT 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, typename ITT>
+    friend class QGenericMatrix;
+#endif
+};
+
+template <int N, int M, typename T, typename InnerT>
+Q_INLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>::QGenericMatrix()
+{
+    setIdentity();
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_INLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>::QGenericMatrix(const QGenericMatrix<N, M, T, InnerT>& other)
+{
+    qMemCopy(m, other.m, sizeof(m));
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>::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, typename InnerT>
+Q_INLINE_TEMPLATE T QGenericMatrix<N, M, T, InnerT>::operator()(int row, int column) const
+{
+    Q_ASSERT(row >= 0 && row < M && column >= 0 && column < N);
+    return qt_math3d_convert<T, InnerT>(m[column][row]);
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_INLINE_TEMPLATE InnerT& QGenericMatrix<N, M, T, InnerT>::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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T, InnerT>::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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T, InnerT>::setIdentity()
+{
+    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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T, InnerT>::fill(qreal 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<M, N, T, InnerT> QGenericMatrix<N, M, T, InnerT>::transposed() const
+{
+    QGenericMatrix<M, N, T, InnerT> 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>& QGenericMatrix<N, M, T, InnerT>::operator+=(const QGenericMatrix<N, M, T, InnerT>& 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>& QGenericMatrix<N, M, T, InnerT>::operator-=(const QGenericMatrix<N, M, T, InnerT>& 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>& QGenericMatrix<N, M, T, InnerT>::operator*=(T factor)
+{
+    InnerT f(factor);
+    for (int index = 0; index < N * M; ++index)
+        m[0][index] *= f;
+    return *this;
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T, InnerT>::operator==(const QGenericMatrix<N, M, T, InnerT>& 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE bool QGenericMatrix<N, M, T, InnerT>::operator!=(const QGenericMatrix<N, M, T, InnerT>& 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT>& QGenericMatrix<N, M, T, InnerT>::operator/=(T divisor)
+{
+    InnerT d(divisor);
+    for (int index = 0; index < N * M; ++index)
+        m[0][index] /= d;
+    return *this;
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator+(const QGenericMatrix<N, M, T, InnerT>& m1, const QGenericMatrix<N, M, T, InnerT>& m2)
+{
+    QGenericMatrix<N, M, T, InnerT> 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator-(const QGenericMatrix<N, M, T, InnerT>& m1, const QGenericMatrix<N, M, T, InnerT>& m2)
+{
+    QGenericMatrix<N, M, T, InnerT> 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<M1, M2, T, InnerT> operator*(const QGenericMatrix<N, M2, T, InnerT>& m1, const QGenericMatrix<M1, N, T, InnerT>& m2)
+{
+    QGenericMatrix<M1, M2, T, InnerT> result(1);
+    for (int row = 0; row < M2; ++row) {
+        for (int col = 0; col < M1; ++col) {
+            InnerT 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator-(const QGenericMatrix<N, M, T, InnerT>& matrix)
+{
+    QGenericMatrix<N, M, T, InnerT> 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, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator*(T factor, const QGenericMatrix<N, M, T, InnerT>& matrix)
+{
+    InnerT f(factor);
+    QGenericMatrix<N, M, T, InnerT> result(1);
+    for (int index = 0; index < N * M; ++index)
+        result.m[0][index] = matrix.m[0][index] * f;
+    return result;
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator*(const QGenericMatrix<N, M, T, InnerT>& matrix, T factor)
+{
+    InnerT f(factor);
+    QGenericMatrix<N, M, T, InnerT> result(1);
+    for (int index = 0; index < N * M; ++index)
+        result.m[0][index] = matrix.m[0][index] * f;
+    return result;
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE QGenericMatrix<N, M, T, InnerT> operator/(const QGenericMatrix<N, M, T, InnerT>& matrix, T divisor)
+{
+    InnerT d(divisor);
+    QGenericMatrix<N, M, T, InnerT> result(1);
+    for (int index = 0; index < N * M; ++index)
+        result.m[0][index] = matrix.m[0][index] / d;
+    return result;
+}
+
+template <int N, int M, typename T, typename InnerT>
+Q_OUTOFLINE_TEMPLATE void QGenericMatrix<N, M, T, InnerT>::toValueArray(T *values)
+{
+    for (int col = 0; col < N; ++col)
+        for (int row = 0; row < M; ++row)
+            values[row * N + col] = qt_math3d_convert<T, InnerT>(m[col][row]);
+}
+
+// Define aliases for the useful variants of QGenericMatrix.
+typedef QGenericMatrix<2, 2, qreal, qrealinner> QMatrix2x2;
+typedef QGenericMatrix<2, 3, qreal, qrealinner> QMatrix2x3;
+typedef QGenericMatrix<2, 4, qreal, qrealinner> QMatrix2x4;
+typedef QGenericMatrix<3, 2, qreal, qrealinner> QMatrix3x2;
+typedef QGenericMatrix<3, 3, qreal, qrealinner> QMatrix3x3;
+typedef QGenericMatrix<3, 4, qreal, qrealinner> QMatrix3x4;
+typedef QGenericMatrix<4, 2, qreal, qrealinner> QMatrix4x2;
+typedef QGenericMatrix<4, 3, qreal, qrealinner> QMatrix4x3;
+
+#ifndef QT_NO_DEBUG_STREAM
+
+template <int N, int M, typename T, typename InnerT>
+QDebug operator<<(QDebug dbg, const QGenericMatrix<N, M, T, InnerT> &m)
+{
+    dbg.nospace() << "QGenericMatrix<" << N << ", " << M
+        << ", " << QTypeInfo<T>::name() << ", " << QTypeInfo<InnerT>::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
+
+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