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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qtransform.h"
#include "qtransform_p.h"
#include "qabstracttransform_p.h"
#include <Qt3DCore/qscenepropertychange.h>
QT_BEGIN_NAMESPACE
namespace Qt3DCore {
/*!
\class Qt3DCore::QTransformPrivate
\internal
*/
QTransformPrivate::QTransformPrivate()
: QComponentPrivate(),
m_transformsDirty(false)
{
}
void QTransformPrivate::_q_transformDestroyed(QObject *obj)
{
QAbstractTransform *transform = static_cast<QAbstractTransform *>(obj);
if (m_transforms.removeOne(transform)) {
emit q_func()->transformsChanged();
_q_update();
}
}
void QTransformPrivate::_q_update()
{
if (!m_transformsDirty)
m_transformsDirty = true;
emit q_func()->matrixChanged();
}
QMatrix4x4 QTransformPrivate::applyTransforms() const
{
QMatrix4x4 matrix;
Q_FOREACH (const QAbstractTransform *t, m_transforms)
matrix = t->transformMatrix() * matrix;
return matrix;
}
QTransform::QTransform(QNode *parent)
: QComponent(*new QTransformPrivate, parent)
{
}
QTransform::QTransform(QList<QAbstractTransform *> transforms, QNode *parent)
: QComponent(*new QTransformPrivate, parent)
{
Q_FOREACH (QAbstractTransform *t, transforms)
addTransform(t);
}
QTransform::QTransform(QAbstractTransform *transform, QNode *parent)
: QComponent(*new QTransformPrivate, parent)
{
addTransform(transform);
}
/*! \internal */
QTransform::QTransform(QTransformPrivate &dd, QNode *parent)
: QComponent(dd, parent)
{
}
QTransform::~QTransform()
{
QNode::cleanup();
Q_D(QTransform);
// boost destruction by avoiding _q_update()-s
d->m_transforms.clear();
}
void QTransform::copy(const QNode *ref)
{
QComponent::copy(ref);
const QTransform *transform = static_cast<const QTransform *>(ref);
// We need to copy the matrix with all the pending
// transformations applied
d_func()->m_matrix = transform->matrix();
}
QList<QAbstractTransform *> QTransform::transforms() const
{
Q_D(const QTransform);
return d->m_transforms;
}
void QTransform::addTransform(QAbstractTransform *transform)
{
Q_D(QTransform);
if (transform == Q_NULLPTR || d->m_transforms.contains(transform))
return;
d->m_transforms.append(transform);
QObject::connect(transform, SIGNAL(transformMatrixChanged()), this, SLOT(_q_update()));
QObject::connect(transform, SIGNAL(destroyed(QObject*)), this, SLOT(_q_transformDestroyed(QObject*)));
emit transformsChanged();
d->_q_update();
}
void QTransform::removeTransform(QAbstractTransform *transform)
{
Q_D(QTransform);
if (!d->m_transforms.removeOne(transform))
return;
QObject::disconnect(transform, SIGNAL(transformMatrixChanged()), this, SLOT(_q_update()));
QObject::disconnect(transform, SIGNAL(destroyed(QObject*)), this, SLOT(_q_transformDestroyed(QObject*)));
emit transformsChanged();
d->_q_update();
}
QMatrix4x4 QTransform::matrix() const
{
Q_D(const QTransform);
if (d->m_transformsDirty) {
d->m_matrix = d->applyTransforms();
d->m_transformsDirty = false;
}
return d->m_matrix;
}
} // namespace Qt3DCore
QT_END_NAMESPACE
#include "moc_qtransform.cpp"
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