QKeyframeAnimation Class

class Qt3DAnimation ::QKeyframeAnimation

A class implementing simple keyframe animation to a QTransform . 更多...

头：	#include <QKeyframeAnimation>
qmake:	QT += 3danimation
Since:	Qt 5.9
实例化：	KeyframeAnimation
继承：	Qt3DAnimation::QAbstractAnimation

该类在 Qt 5.9 引入。

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公共类型

enum	RepeatMode { None, Constant, Repeat }

特性

easing : QEasingCurve endMode : RepeatMode framePositions : QVector<float>

startMode : RepeatMode target : Qt3DCore::QTransform* targetName : QString

公共函数

	QKeyframeAnimation (QObject * parent = nullptr)
void	addKeyframe (Qt3DCore::QTransform * keyframe )
QEasingCurve	easing () const
Qt3DAnimation::QKeyframeAnimation::RepeatMode	endMode () const
QVector<float>	framePositions () const
QVector<Qt3DCore::QTransform *>	keyframeList () const
void	removeKeyframe (Qt3DCore::QTransform * keyframe )
void	setKeyframes (const QVector<Qt3DCore::QTransform *> & keyframes )
Qt3DAnimation::QKeyframeAnimation::RepeatMode	startMode () const
Qt3DCore::QTransform *	target () const
QString	targetName () const

公共槽

void	setEasing (const QEasingCurve & easing )
void	setEndMode (Qt3DAnimation::QKeyframeAnimation::RepeatMode mode )
void	setFramePositions (const QVector<float> & positions )
void	setStartMode (Qt3DAnimation::QKeyframeAnimation::RepeatMode mode )
void	setTarget (Qt3DCore::QTransform * target )
void	setTargetName (const QString & name )

信号

void	easingChanged (const QEasingCurve & easing )
void	endModeChanged (QKeyframeAnimation::RepeatMode endMode )
void	framePositionsChanged (const QVector<float> & positions )
void	startModeChanged (QKeyframeAnimation::RepeatMode startMode )
void	targetChanged (Qt3DCore::QTransform * target )
void	targetNameChanged (const QString & name )

详细描述

A Qt3DAnimation::QKeyframeAnimation class implements simple keyframe animation that can be used to animate QTransform . The keyframes consists of multiple timed QTransforms, which are interpolated and applied to the target QTransform . QEasingCurve is used between keyframes to control the interpolator. RepeatMode can be set for when the position set to the QKeyframeAnimation is below or above the values defined in the keyframe positions.

成员类型文档编制

enum QKeyframeAnimation:: RepeatMode

This enumeration specifies how position values outside keyframe values are handled.

常量	值	描述
Qt3DAnimation::QKeyframeAnimation::None	0	The animation is not applied to the target transform.
Qt3DAnimation::QKeyframeAnimation::Constant	1	The edge keyframe value is used.
Qt3DAnimation::QKeyframeAnimation::Repeat	2	The animation is repeated.

特性文档编制

easing : QEasingCurve

Holds the easing curve of the interpolator between keyframes.

访问函数：

QEasingCurve	easing () const
void	setEasing (const QEasingCurve & easing )

通知程序信号：

void	easingChanged (const QEasingCurve & easing )

endMode : RepeatMode

Holds the repeat mode for the position values greater than the last frame position.

访问函数：

Qt3DAnimation::QKeyframeAnimation::RepeatMode	endMode () const
void	setEndMode (Qt3DAnimation::QKeyframeAnimation::RepeatMode mode )

通知程序信号：

void	endModeChanged (QKeyframeAnimation::RepeatMode endMode )

framePositions : QVector < float >

Holds the positions of the keyframes. Each position in the list specifies the position of the corresponding keyframe with the same index. The values must be in an ascending order. Values can be positive or negative and do not have any predefined unit.

访问函数：

QVector<float>	framePositions () const
void	setFramePositions (const QVector<float> & positions )

通知程序信号：

void	framePositionsChanged (const QVector<float> & positions )

startMode : RepeatMode

Holds the repeat mode for the position values less than the first frame position.

访问函数：

Qt3DAnimation::QKeyframeAnimation::RepeatMode	startMode () const
void	setStartMode (Qt3DAnimation::QKeyframeAnimation::RepeatMode mode )

通知程序信号：

void	startModeChanged (QKeyframeAnimation::RepeatMode startMode )

target : Qt3DCore::QTransform *

Holds the target QTransform the animation is applied to.

访问函数：

Qt3DCore::QTransform *	target () const
void	setTarget (Qt3DCore::QTransform * target )

通知程序信号：

void	targetChanged (Qt3DCore::QTransform * target )

targetName : QString

Holds the name of the target transform. This is a convenience property making it easier to match the target transform to the keyframe animation. The name is usually same as the name of the parent entity of the target transform, but does not have to be.

访问函数：

QString	targetName () const
void	setTargetName (const QString & name )

通知程序信号：

void	targetNameChanged (const QString & name )

成员函数文档编制

QKeyframeAnimation:: QKeyframeAnimation ( QObject * parent = nullptr)

Constructs an QKeyframeAnimation with parent .

void QKeyframeAnimation:: addKeyframe ( Qt3DCore::QTransform * keyframe )

Adds new keyframe at the end of the animation. The QTransform can be added to the animation multiple times.

QVector < Qt3DCore::QTransform *> QKeyframeAnimation:: keyframeList () const

Returns the list of keyframes.

void QKeyframeAnimation:: removeKeyframe ( Qt3DCore::QTransform * keyframe )

Removes a keyframe from the animation. If the same QTransform is set as keyframe multiple times, all occurrences are removed.

void QKeyframeAnimation:: setKeyframes (const QVector < Qt3DCore::QTransform *> & keyframes )

设置 keyframes of the animation. Old keyframes are cleared.

内容

• 公共类型

• 特性

• 公共函数

• 公共槽

• 信号

• 详细描述