diff options
Diffstat (limited to 'src/threed/graphicsview/qgraphicsscale3d.cpp')
| -rw-r--r-- | src/threed/graphicsview/qgraphicsscale3d.cpp | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/src/threed/graphicsview/qgraphicsscale3d.cpp b/src/threed/graphicsview/qgraphicsscale3d.cpp deleted file mode 100644 index cbf060bd..00000000 --- a/src/threed/graphicsview/qgraphicsscale3d.cpp +++ /dev/null @@ -1,339 +0,0 @@ -/**************************************************************************** -** -** 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 "qgraphicsscale3d.h" - -QT_BEGIN_NAMESPACE - -/*! - \class QGraphicsScale3D - \brief The QGraphicsScale3D class supports scaling of items in 3D. - \since 4.8 - \ingroup qt3d - \ingroup qt3d::graphicsview - - \sa QGraphicsRotation3D, QGraphicsTranslation3D -*/ - -/*! - \qmlclass Scale3D QGraphicsScale3D - \brief The Scale3D item supports scaling of items in 3D. - \since 4.8 - \ingroup qt3d::qml3d - - 3D items in QML can have a simple scale applied directly as follows: - - \code - Item3D { - mesh: Mesh { source: "chair.3ds" } - scale: 0.5 - } - \endcode - - An alternative is to use Scale3D to apply a transform directly - to an item as part of a sequence of transformations: - - \code - Item3D { - mesh: Mesh { source: "chair.3ds" } - transform: [ - Translation3D { translate: Qt.vector3d(5, 0, 0) }, - Scale3D { scale: 0.5 } - ] - } - \endcode - - This allows the application writer to control exactly when the - scale occurs relative to other transformations. In the example - above, the item is first translated by 5 units along the x-axis, - and then the co-ordinates are scaled by half. This is distinct - from the following example which scales the object to half its - original size and then translates it by 5 units along the x-axis: - - \code - Item3D { - mesh: Mesh { source: "chair.3ds" } - transform: [ - Scale3D { scale: 0.5 }, - Translation3D { translate: Qt.vector3d(5, 0, 0) } - ] - } - \endcode - - The scale property on the item itself is applied before - any of the transforms. So the previous example is equivalent to: - - \code - Item3D { - mesh: Mesh { source: "chair.3ds" } - scale: 0.5 - transform: [ - Translation3D { translate: Qt.vector3d(5, 0, 0) } - ] - } - \endcode - - Scale values can also affect the x, y, and z axes by different amounts - by using a \c{vector3D} value: - - \code - Item3D { - mesh: Mesh { source: "chair.3ds" } - transform: [ - Scale3D { scale: Qt.vector3d(0.5, 0.2, 1.0) }, - Translation3D { translate: Qt.vector3d(5, 0, 0) } - ] - } - \endcode - - \sa Rotation3D, Translation3D -*/ - -class QGraphicsScale3DPrivate -{ -public: - QGraphicsScale3DPrivate() - : scale(1, 1, 1) - , isIdentityScale(true) - , isIdentityOrigin(true) - {} - - QVector3D origin; - QVector3D scale; - bool isIdentityScale; - bool isIdentityOrigin; -}; - -/*! - Construct a 3D scale transform and attach it to \a parent. -*/ -QGraphicsScale3D::QGraphicsScale3D(QObject *parent) - : QGraphicsTransform3D(parent), d_ptr(new QGraphicsScale3DPrivate) -{ -} - -/*! - Destroy this 3D scale transform. -*/ -QGraphicsScale3D::~QGraphicsScale3D() -{ -} - -/*! - \property QGraphicsScale3D::origin - \brief the origin about which to scale. - - The default value for this property is (0, 0, 0). -*/ - -/*! - \qmlproperty vector3D Scale3D::origin - - The origin about which to scale. The default value for this - property is (0, 0, 0). -*/ - -QVector3D QGraphicsScale3D::origin() const -{ - Q_D(const QGraphicsScale3D); - return d->origin; -} - -void QGraphicsScale3D::setOrigin(const QVector3D &value) -{ - Q_D(QGraphicsScale3D); - - // Optimise for the common case of setting the origin to 0, 0, 0 - // Also minimise the number of floating point compares required - bool changed = false; - QVector3D v = value; - - // Are we about to set to 0, 0, 0 ...? - // Normalise inbound value & record in bool to save on compares - bool isSetToZeroOrigin = false; - if (qFuzzyIsNull(v.x()) && qFuzzyIsNull(v.y()) && qFuzzyIsNull(v.z())) - { - v = QVector3D(0, 0, 0); - isSetToZeroOrigin = true; - } - if (!isSetToZeroOrigin) - { - if (d->origin != v) - { - d->origin = v; - d->isIdentityOrigin = false; - changed = true; - } - } - else - { - if (!d->isIdentityOrigin) - { - d->origin = v; - d->isIdentityOrigin = true; - changed = true; - } - } - if (changed) - { - emit transformChanged(); - emit originChanged(); - } -} - -/*! - \property QGraphicsScale3D::scale - \brief the amount with which to scale each component. - - The default value for this property is QVector3D(1, 1, 1). -*/ - -/*! - \qmlproperty vector3D Scale3D::scale - - The amount with which to scale each component. The default value for - this property is (1, 1, 1). - - This property can be specified as either a vector3D or a single - floating-point value. A single floating-point value will set - the x, y, and z scale components to the same value. In other words, - the following two transformations are equivalent: - - \code - Scale3D { scale: 2 } - Scale3D { scale: Qt.vector3d(2, 2, 2) } - \endcode -*/ - -QVector3D QGraphicsScale3D::scale() const -{ - Q_D(const QGraphicsScale3D); - return d->scale; -} - -void QGraphicsScale3D::setScale(const QVector3D &value) -{ - Q_D(QGraphicsScale3D); - - // Optimise for the common case of setting the scale to 1, 1, 1 - // Also minimise the number of floating point compares required - bool changed = false; - QVector3D v = value; - - // Are we about to set to 1, 1, 1 ...? - // Normalise inbound value & record in bool to save on compares - bool isSetToIdentity = false; - if (qFuzzyIsNull(v.x() - 1.0f) && qFuzzyIsNull(v.y() - 1.0f) && qFuzzyIsNull(v.z() - 1.0f)) - { - v = QVector3D(1, 1, 1); - isSetToIdentity = true; - } - if (!isSetToIdentity) - { - if (d->scale != v) - { - d->scale = v; - d->isIdentityScale = false; - changed = true; - } - } - else - { - if (!d->isIdentityScale) - { - d->scale = v; - d->isIdentityScale = true; - changed = true; - } - } - if (changed) - { - emit transformChanged(); - emit scaleChanged(); - } -} - -/*! - \internal -*/ -void QGraphicsScale3D::applyTo(QMatrix4x4 *matrix) const -{ - Q_D(const QGraphicsScale3D); - if (!d->isIdentityScale) - { - if (d->isIdentityOrigin) - { - matrix->scale(d->scale); - } - else - { - matrix->translate(d->origin); - matrix->scale(d->scale); - matrix->translate(-d->origin); - } - } -} - -/*! - \internal -*/ -QGraphicsTransform3D *QGraphicsScale3D::clone(QObject *parent) const -{ - Q_D(const QGraphicsScale3D); - QGraphicsScale3D *copy = new QGraphicsScale3D(parent); - copy->setOrigin(d->origin); - copy->setScale(d->scale); - return copy; -} - -/*! - \fn void QGraphicsScale3D::originChanged() - - Signal that is emitted when origin() changes. -*/ - -/*! - \fn void QGraphicsScale3D::scaleChanged() - - Signal that is emitted when scale() changes. -*/ - -QT_END_NAMESPACE |