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#include "qgraphicstransform3d.h"

QT_BEGIN_NAMESPACE

/*!
    \class QGraphicsTransform3D
    \brief The QGraphicsTransform3D class is an abstract base class for building 3D transformations.
    \since 4.8
    \ingroup qt3d
    \ingroup qt3d::graphicsview

    QGraphicsTransform3D lets you create and control advanced transformations
    that can be configured independently using specialized properties.
    Scene nodes have an associated list of transforms, which are applied
    in order, one at a time, to the modelview matrix.  Transformations are
    computed in true 3D space using QMatrix4x4.

    QGraphicsTransform3D is particularly useful for animations. Whereas
    QGLPainter::modelViewMatrix() lets you assign any transform directly,
    there is no direct way to interpolate between two different
    transformations (e.g., when transitioning between two states, each for
    which the item has a different arbitrary transform assigned). Using
    QGraphicsTransform3D you can interpolate the property values of each
    independent transformation. The resulting operation is then combined into a
    single transform which is applied to the modelview matrix during drawing.

    If you want to create your own configurable transformation, you can create
    a subclass of QGraphicsTransform3D (or any or the existing subclasses), and
    reimplement the pure virtual applyTo() function, which takes a pointer to a
    QMatrix4x4. Each operation you would like to apply should be exposed as
    properties (e.g., customTransform->setVerticalShear(2.5)). Inside you
    reimplementation of applyTo(), you can modify the provided transform
    respectively.

    \sa QGraphicsScale3D, QGraphicsRotation3D, QGraphicsTranslation3D
    \sa QGraphicsBillboardTransform
*/

/*!
    \fn QGraphicsTransform3D::QGraphicsTransform3D(QObject *parent)

    Constructs a 3D transformation and attaches it to \a parent.
*/

/*!
    \fn QGraphicsTransform3D::~QGraphicsTransform3D()

    Destroys this 3D transformation.
*/

/*!
    \fn void QGraphicsTransform3D::applyTo(QMatrix4x4 *matrix) const

    Applies the effect of this transformation to the specified
    modelview \a matrix.
*/

/*!
    \fn QGraphicsTransform3D *QGraphicsTransform3D::clone(QObject *parent) const

    Clones a copy of this transformation and attaches the clone to \a parent.
*/

/*!
    \fn void QGraphicsTransform3D::transformChanged()

    Signal that is emitted whenever any of the transformation's
    parameters are changed.
*/

QT_END_NAMESPACE