QMorphingAnimation

A class implementing blend-shape morphing animation. More…

Synopsis

Functions

• def addMorphTarget (target)

• def easing ()

• def getWeights (positionIndex)

• def interpolator ()

• def method ()

• def morphTargetList ()

• def removeMorphTarget (target)

• def setMorphTargets (targets)

• def setWeights (positionIndex, weights)

• def target ()

• def targetName ()

• def targetPositions ()

Slots

• def setEasing (easing)

• def setMethod (method)

• def setTarget (target)

• def setTargetName (name)

• def setTargetPositions (targetPositions)

Signals

• def easingChanged (easing)

• def interpolatorChanged (interpolator)

• def methodChanged (method)

• def targetChanged (target)

• def targetNameChanged (name)

• def targetPositionsChanged (targetPositions)

Detailed Description

A QMorphingAnimation class implements blend-shape morphing animation to a target QGeometryRenderer . The QMorphingAnimation sets the correct QAttributes from the morph targets to the target geometry and calculates interpolator for the current position. The actual blending between the attributes must be implemented in the material. Qt3DAnimation::QMorphPhongMaterial implements material with morphing support for phong lighting model. The blending happens between 2 attributes - ‘base’ and ‘target’. The names for the base and target attributes are taken from the morph target names, where the base attribute retains the name it already has and the target attribute name gets ‘Target’ appended to the name. The interpolator can be set as a QParameter to the used material. All morph targets in the animation should contain the attributes with same names as those in the base geometry.

class PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation([parent=None])

param parent:

PySide2.QtCore.QObject

Construct a new QMorphingAnimation with parent .

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.Method

This enumeration specifies the morphing method.

Constant	Description
Qt3DAnimation.QMorphingAnimation.Normalized	The blending should use the normalized formula; V’ = Vbase * (1.0 - sum(Wi)) + sum[Vi * Wi]
Qt3DAnimation.QMorphingAnimation.Relative	The blending should use the relative formula; V’ = Vbase + sum[Vi * Wi]

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.addMorphTarget(target)

Parameters:

target – PySide2.Qt3DAnimation.Qt3DAnimation.QMorphTarget

Add new morph target at the end of the animation.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.easing()

Return type:

PySide2.QtCore.QEasingCurve

Holds the easing curve of the interpolator between morph targets.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.easingChanged(easing)

Parameters:

easing – PySide2.QtCore.QEasingCurve

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.getWeights(positionIndex)

Parameters:

positionIndex – int

Return type:

Return morph weights at positionIndex .

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.interpolator()

Return type:

float

Holds the interpolator between base and target attributes.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.interpolatorChanged(interpolator)

Parameters:

interpolator – float

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.method()

Return type:

Method

Holds the morphing method. The default is Relative.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.methodChanged(method)

Parameters:

method – Method

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.morphTargetList()

Return type:

Return morph target list.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.removeMorphTarget(target)

Parameters:

target – PySide2.Qt3DAnimation.Qt3DAnimation.QMorphTarget

Remove morph target from the animation.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setEasing(easing)

Parameters:

easing – PySide2.QtCore.QEasingCurve

Holds the easing curve of the interpolator between morph targets.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setMethod(method)

Parameters:

method – Method

Holds the morphing method. The default is Relative.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setMorphTargets(targets)

Parameters:

targets –

Set morph targets to animation. Old targets are cleared.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setTarget(target)

Parameters:

target – PySide2.Qt3DRender.Qt3DRender.QGeometryRenderer

Holds the target QGeometryRenderer the morphing animation is applied to.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setTargetName(name)

Parameters:

name – str

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

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setTargetPositions(targetPositions)

Parameters:

targetPositions –

Holds the position values of the morph target. Each position in the list specifies the position of the corresponding morph target 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.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.setWeights(positionIndex, weights)

Parameters:

• positionIndex – int

• weights –

Sets morph weights at positionIndex .

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.target()

Return type:

PySide2.Qt3DRender.Qt3DRender.QGeometryRenderer

Holds the target QGeometryRenderer the morphing animation is applied to.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.targetChanged(target)

Parameters:

target – PySide2.Qt3DRender.Qt3DRender.QGeometryRenderer

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.targetName()

Return type:

str

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

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.targetNameChanged(name)

Parameters:

name – str

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.targetPositions()

Return type:

Holds the position values of the morph target. Each position in the list specifies the position of the corresponding morph target 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.

PySide2.Qt3DAnimation.Qt3DAnimation.QMorphingAnimation.targetPositionsChanged(targetPositions)

Parameters:

targetPositions –