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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtQuick3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qgraphicstranslation3d.h"
QT_BEGIN_NAMESPACE
/*!
\class QGraphicsTranslation3D
\brief The QGraphicsTranslation3D class supports translation of 3D items.
\since 4.8
\ingroup qt3d
\ingroup qt3d::graphicsview
QGraphicsTranslation3D is derived directly from QGraphicsTransform, and
provides a \l translate property to specify the 3D vector to
apply to incoming co-ordinates.
The \l progress property can be used to perform animation along a
translation vector by varying the progress value between 0 and 1.
Overshoot animations are also possible by setting the progress
value to something outside this range. The default progress
value is 1.
\sa QGraphicsRotation3D, QGraphicsScale3D
*/
/*!
\qmlclass Translation3D QGraphicsTranslation3D
\brief The Translation3D item supports translation of items in 3D.
\since 4.8
\ingroup qt3d::qml3d
3D items in QML are typically positioned directly as follows:
\code
Item3D {
mesh: Mesh { source: "chair.3ds" }
position: Qt.vector3d(0, 5, 10)
}
\endcode
However, it can sometimes be useful to translate an object along a
vector under the control of an animation. The Translate3D
element can be used for this purpose. The following example
translates the object along a straight-line path 5 units to
the right of its original position, and then back again:
\code
Item3D {
mesh: Mesh { source: "chair.3ds" }
position: Qt.vector3d(0, 5, 10)
transform: [
Translation3D {
translate: Qt.vector3d(5, 0, 0)
SequentialAnimation on progress {
running: true
loops: Animation.Infinite
NumberAnimation { to : 1.0; duration: 300 }
NumberAnimation { to : 0.0; duration: 300 }
}
}
]
}
\endcode
\sa Rotation3D, Scale3D
*/
class QGraphicsTranslation3DPrivate
{
public:
QGraphicsTranslation3DPrivate() : progress(1.0f) {}
QVector3D translate;
qreal progress;
};
/*!
Constructs a new translation and attaches it to \a parent.
*/
QGraphicsTranslation3D::QGraphicsTranslation3D(QObject *parent)
: QGraphicsTransform3D(parent), d_ptr(new QGraphicsTranslation3DPrivate)
{
}
/*!
Destroys this translation.
*/
QGraphicsTranslation3D::~QGraphicsTranslation3D()
{
}
/*!
\property QGraphicsTranslation3D::translate
\brief the translation to apply to incoming co-ordinates.
The default value for this property is (0, 0, 0).
*/
/*!
\qmlproperty vector3D Translation3D::translate
The translation to apply to incoming co-ordinates. The default value
for this property is (0, 0, 0).
*/
QVector3D QGraphicsTranslation3D::translate() const
{
Q_D(const QGraphicsTranslation3D);
return d->translate;
}
void QGraphicsTranslation3D::setTranslate(const QVector3D &value)
{
Q_D(QGraphicsTranslation3D);
if (d->translate != value) {
d->translate = value;
emit transformChanged();
emit translateChanged();
}
}
/*!
\property QGraphicsTranslation3D::progress
\brief the progress along the translation vector, from 0 to 1.
The default value for this property is 1.
This property can be used to perform animation along a translation
vector by varying the progress between 0 and 1. Overshoot animations
are also possible by setting the value to something outside this range.
*/
/*!
\qmlproperty real Translation3D::progress
The progress along the translation vector, from 0 to 1. The default
value for this property is 1.
This property can be used to perform animation along a translation
vector by varying the progress between 0 and 1. Overshoot animations
are also possible by setting the value to something outside this range.
*/
qreal QGraphicsTranslation3D::progress() const
{
Q_D(const QGraphicsTranslation3D);
return d->progress;
}
void QGraphicsTranslation3D::setProgress(qreal value)
{
Q_D(QGraphicsTranslation3D);
if (d->progress != value) {
d->progress = value;
emit transformChanged();
emit progressChanged();
}
}
/*!
\internal
*/
void QGraphicsTranslation3D::applyTo(QMatrix4x4 *matrix) const
{
Q_D(const QGraphicsTranslation3D);
matrix->translate(d->translate * d->progress);
}
/*!
\internal
*/
QGraphicsTransform3D *QGraphicsTranslation3D::clone(QObject *parent) const
{
Q_D(const QGraphicsTranslation3D);
QGraphicsTranslation3D *copy = new QGraphicsTranslation3D(parent);
copy->setTranslate(d->translate);
copy->setProgress(d->progress);
return copy;
}
/*!
\fn void QGraphicsTranslation3D::translateChanged()
Signal that is emitted when translate() changes.
*/
/*!
\fn void QGraphicsTranslation3D::progressChanged()
Signal that is emitted when progress() changes.
*/
QT_END_NAMESPACE
|
