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Diffstat (limited to 'src/declarative/scenegraph/coreapi/qsgmatrix4x4stack.cpp')
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1 files changed, 0 insertions, 380 deletions
diff --git a/src/declarative/scenegraph/coreapi/qsgmatrix4x4stack.cpp b/src/declarative/scenegraph/coreapi/qsgmatrix4x4stack.cpp deleted file mode 100644 index 07ba21d17c..0000000000 --- a/src/declarative/scenegraph/coreapi/qsgmatrix4x4stack.cpp +++ /dev/null @@ -1,380 +0,0 @@ -/**************************************************************************** -** -** 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 QtDeclarative 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. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qsgmatrix4x4stack.h" -#include "qsgmatrix4x4stack_p.h" - -QT_BEGIN_NAMESPACE - -/*! - \class QSGMatrix4x4Stack - \brief The QSGMatrix4x4Stack class manages stacks of transformation matrices in GL applications. - \since 4.8 - \ingroup qt3d - \ingroup qt3d::enablers - - Transformation matrices are one of the basic building blocks of - 3D applications, allowing object models to be positioned, scaled, - rotated, and projected onto the screen. - - GL systems support several standard kinds of matrices, particularly - modelview and projection matrices. These matrices are typically - organized into stacks, which allow the current matrix state to be - saved with push() and restored later with pop(). - - QSGMatrix4x4Stack assists QGLPainter with the management of matrix - stacks, providing operations to set and modify transformation - matrices in each of the standard matrix stacks. - - In the following example, a standard orthographic projection matrix for a - view is set via the QGLPainter::projectionMatrix() stack, and - then a modelview matrix is set via the QGLPainter::modelViewMatrix() - stack to scale and translate an object prior to drawing: - - \code - QGLPainter painter(this); - - QMatrix4x4 projm; - projm.ortho(window->rect()); - painter.projectionMatrix() = projm; - - painter.modelViewMatrix().setToIdentity(); - painter.modelViewMatrix().translate(-1.0f, 2.0f, 0.0f); - painter.modelViewMatrix().scale(0.5f); - \endcode - - Later, the application can save the current modelview matrix state - and draw a different object with a different modelview matrix: - - \code - painter.modelViewMatrix().push(); - painter.modelViewMatrix().setToIdentity(); - painter.modelViewMatrix().scale(2.0f); - \endcode - - For efficiency, the matrix values are kept client-side until they - are needed by a QGLPainter::draw() operation. Until then, changes - to the matrix will not be reflected in the GL server. The application - can force the GL server to update the server with a call to - QGLPainter::update(). - - QSGMatrix4x4Stack is supported on all GL platforms, including OpenGL/ES 2.0 - which doesn't support matrix stacks natively. On that platform, the - matrix stack is simulated in client memory. When the application - selects a shader program to draw under OpenGL/ES 2.0, it calls - top() to obtain the actual value to be set on the shader program. - - \sa QGLPainter -*/ - -/*! - Creates a matrix stack. -*/ -QSGMatrix4x4Stack::QSGMatrix4x4Stack() - : d_ptr(new QSGMatrix4x4StackPrivate) -{ -} - -/*! - Destroy this matrix stack. -*/ -QSGMatrix4x4Stack::~QSGMatrix4x4Stack() -{ -} - -/*! - Pushes the current matrix onto the matrix stack. The matrix can - be restored with pop(). The new top of stack will have the - same value as the previous top of stack. - - The depths of the traditional \c{GL_MODELVIEW} and \c{GL_PROJECTION} - matrix stacks in the GL server are system-dependent and easy to - overflow in nested rendering code using \c{glPushMatrix()}. - By contrast, the push() function provides an arbitrary-sized stack - in client memory. - - \sa pop(), top() -*/ -void QSGMatrix4x4Stack::push() -{ - Q_D(QSGMatrix4x4Stack); - d->stack.push(d->matrix); -} - -/*! - Pops the top-most matrix from this matrix stack and sets the - current matrix to the next value down. Does nothing if the - matrix stack contains a single entry. - - \sa push() -*/ -void QSGMatrix4x4Stack::pop() -{ - Q_D(QSGMatrix4x4Stack); - if (!d->stack.isEmpty()) - d->matrix = d->stack.pop(); - d->isDirty = true; -} - -/*! - Set the matrix at the top of this matrix stack to the identity matrix. - - \sa operator=() -*/ -void QSGMatrix4x4Stack::setToIdentity() -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.setToIdentity(); - d->isDirty = true; -} - -/*! - Returns a const reference to the current matrix at the top of this - matrix stack. This is typically used to fetch the matrix so it can - be set on user-defined shader programs. - - \sa operator=() -*/ -const QMatrix4x4 &QSGMatrix4x4Stack::top() const -{ - Q_D(const QSGMatrix4x4Stack); - return d->matrix; -} - -/*! - \fn QSGMatrix4x4Stack::operator const QMatrix4x4 &() const - - Returns a const reference to the current matrix at the top of - this matrix stack. - - \sa top() -*/ - -/*! - Assigns \a matrix to the matrix at the top of this matrix stack. - - \sa top() -*/ -QSGMatrix4x4Stack& QSGMatrix4x4Stack::operator=(const QMatrix4x4& matrix) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix = matrix; - d->isDirty = true; - return *this; -} - -/*! - Multiplies the matrix at the top of this matrix stack by \a matrix. - - \sa top() -*/ -QSGMatrix4x4Stack& QSGMatrix4x4Stack::operator*=(const QMatrix4x4& matrix) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix *= matrix; - d->isDirty = true; - return *this; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that translates coordinates by (\a x, \a y, \a z). The following example - translates the modelview matrix by (1, -3, 0): - - \code - QGLPainter painter(this); - painter.modelViewMatrix().translate(1.0f, -3.0f, 0.0f); - \endcode - - \sa scale(), rotate() -*/ -void QSGMatrix4x4Stack::translate(qreal x, qreal y, qreal z) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.translate(x, y, z); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix statck by another - that translates coordinates by the components of \a vector. - - \sa scale(), rotate() -*/ -void QSGMatrix4x4Stack::translate(const QVector3D& vector) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.translate(vector); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that scales coordinates by the components \a x, \a y, and \a z. - The following example scales the modelview matrix by (1, 2, 1): - - \code - QGLPainter painter(this); - painter.modelViewMatrix().scale(1.0f, 2.0f, 1.0f); - \endcode - - \sa translate(), rotate() -*/ -void QSGMatrix4x4Stack::scale(qreal x, qreal y, qreal z) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.scale(x, y, z); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that scales coordinates by the given \a factor. The following example - scales the modelview matrix by a factor of 2: - - \code - QGLPainter painter(this); - painter.modelViewMatrix().scale(2.0f); - \endcode - - \sa translate(), rotate() -*/ -void QSGMatrix4x4Stack::scale(qreal factor) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.scale(factor); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that scales coordinates by the components of \a vector. - - \sa translate(), rotate() -*/ -void QSGMatrix4x4Stack::scale(const QVector3D& vector) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.scale(vector); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that rotates coordinates through \a angle degrees about the vector - (\a x, \a y, \a z). The following example rotates the modelview - matrix by 45 degress about the vector (1, -3, 0): - - \code - QGLPainter painter(this); - painter.modelViewMatrix().rotate(45.0f, 1.0f, -3.0f, 0.0f); - \endcode - - \sa scale(), translate() -*/ -void QSGMatrix4x4Stack::rotate(qreal angle, qreal x, qreal y, qreal z) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.rotate(angle, x, y, z); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by another - that rotates coordinates through \a angle degrees about \a vector. - - \sa scale(), translate() -*/ -void QSGMatrix4x4Stack::rotate(qreal angle, const QVector3D& vector) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.rotate(angle, vector); - d->isDirty = true; -} - -/*! - Multiplies the current matrix at the top of this matrix stack by the - \a quaternion. Thus \c {painter->modelViewMatrix().rotate(quaternion)} - is equivalent to the following code: - \code - QMatrix4x4 mat; - mat.rotate(quaternion); - painter->modelViewMatrix() *= mat; - \endcode - which rotates coordinates according to the given \a quaternion. - - \sa scale(), translate() -*/ -void QSGMatrix4x4Stack::rotate(const QQuaternion &quaternion) -{ - Q_D(QSGMatrix4x4Stack); - d->matrix.rotate(quaternion); - d->isDirty = true; -} - -/*! - Returns true if the top of this matrix stack has been modified; - false otherwise. - - \sa setDirty() -*/ -bool QSGMatrix4x4Stack::isDirty() const -{ - Q_D(const QSGMatrix4x4Stack); - return d->isDirty; -} - -/*! - Sets the \a dirty flag on this matrix stack, which indicates - if it has been modified. - - A matrix stack may also be set to dirty by translate(), - scale(), operator*(), etc. - - \sa isDirty() -*/ -void QSGMatrix4x4Stack::setDirty(bool dirty) -{ - Q_D(QSGMatrix4x4Stack); - d->isDirty = dirty; -} - -QT_END_NAMESPACE |