class QTransform

Used to perform transforms on meshes. More…

Synopsis

Properties

• matrixᅟ

• rotationᅟ

• rotationXᅟ

• rotationYᅟ

• rotationZᅟ

• scaleᅟ

• scale3Dᅟ

• translationᅟ

• worldMatrixᅟ

Methods

• def __init__()

• def matrix()

• def rotation()

• def rotationX()

• def rotationY()

• def rotationZ()

• def scale()

• def scale3D()

• def translation()

• def worldMatrix()

Slots

• def setMatrix()

• def setRotation()

• def setRotationX()

• def setRotationY()

• def setRotationZ()

• def setScale()

• def setScale3D()

• def setTranslation()

Signals

• def matrixChanged()

• def rotationChanged()

• def rotationXChanged()

• def rotationYChanged()

• def rotationZChanged()

• def scale3DChanged()

• def scaleChanged()

• def translationChanged()

• def worldMatrixChanged()

Static functions

• def fromAxes()

• def fromAxesAndAngles()

• def fromAxisAndAngle()

• def fromEulerAngles()

• def rotateAround()

• def rotateFromAxes()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description

The QTransform component is not shareable between multiple QEntity ‘s. The transformation is held as QVector3D scale, QQuaternion rotation and QVector3D translation components. The transformations are applied to the mesh in that order. When matrix property is set, it is decomposed to these transform components and corresponding signals are emitted.

Several helper functions are provided to set up the QTransform ; fromAxisAndAngle and fromAxesAndAngles can be used to set the rotation around specific axes, fromEulerAngles can be used to set the rotation based on euler angles and rotateAround can be used to rotate the object around specific point relative to local origin.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property matrixᅟ: QMatrix4x4

Holds the QMatrix4x4 of the transform.

Note

When the matrix property is set, it is decomposed to translation, rotation and scale components.

Access functions:

• matrix()

• setMatrix()

• Signal matrixChanged()

property rotationᅟ: QQuaternion

Holds the rotation of the transform as QQuaternion.

Access functions:

• rotation()

• setRotation()

• Signal rotationChanged()

property rotationXᅟ: float

Holds the x rotation of the transform as Euler angle.

Access functions:

• rotationX()

• setRotationX()

• Signal rotationXChanged()

property rotationYᅟ: float

Holds the y rotation of the transform as Euler angle.

Access functions:

• rotationY()

• setRotationY()

• Signal rotationYChanged()

property rotationZᅟ: float

Holds the z rotation of the transform as Euler angle.

Access functions:

• rotationZ()

• setRotationZ()

• Signal rotationZChanged()

property scaleᅟ: float

Holds the uniform scale of the transform. If the scale has been set with setScale3D , holds the x value only.

Access functions:

• scale()

• setScale()

• Signal scaleChanged()

property scale3Dᅟ: QVector3D

Holds the scale of the transform as QVector3D.

Access functions:

• scale3D()

• setScale3D()

• Signal scale3DChanged()

property translationᅟ: QVector3D

Holds the translation of the transform as QVector3D.

Access functions:

• translation()

• setTranslation()

• Signal translationChanged()

property worldMatrixᅟ: QMatrix4x4

Holds the world transformation matrix for the transform. This assumes the QTransform component is being referenced by a QEntity . This makes it more convenient to identify when a QEntity part of a subtree has been transformed in the world even though its local transformation might not have changed.

Access functions:

• worldMatrix()

• Signal worldMatrixChanged()

__init__([parent=None])

Parameters:

parent – QNode

Constructs a new QTransform with parent.

static fromAxes(xAxis, yAxis, zAxis)

Parameters:

• xAxis – QVector3D

• yAxis – QVector3D

• zAxis – QVector3D

Return type:

QQuaternion

Creates a QQuaterniom definining a rotation from the axes xAxis, yAxis and zAxis.

static fromAxesAndAngles(axis1, angle1, axis2, angle2)

Parameters:

• axis1 – QVector3D

• angle1 – float

• axis2 – QVector3D

• angle2 – float

Return type:

QQuaternion

Creates a QQuaternion from axis1, angle1, axis2, and angle2. Returns the resulting QQuaternion.

static fromAxesAndAngles(axis1, angle1, axis2, angle2, axis3, angle3)

Parameters:

• axis1 – QVector3D

• angle1 – float

• axis2 – QVector3D

• angle2 – float

• axis3 – QVector3D

• angle3 – float

Return type:

QQuaternion

Creates a QQuaternion from axis1, angle1, axis2, angle2, axis3, and angle3. Returns the resulting QQuaternion.

static fromAxisAndAngle(axis, angle)

Parameters:

• axis – QVector3D

• angle – float

Return type:

QQuaternion

Creates a QQuaternion from axis and angle. Returns the resulting QQuaternion.

static fromAxisAndAngle(x, y, z, angle)

Parameters:

• x – float

• y – float

• z – float

• angle – float

Return type:

QQuaternion

Creates a QQuaternion from x, y, z, and angle. Returns the resulting QQuaternion.

static fromEulerAngles(eulerAngles)

Parameters:

eulerAngles – QVector3D

Return type:

QQuaternion

Creates a QQuaternion from eulerAngles. Returns the resulting QQuaternion.

static fromEulerAngles(pitch, yaw, roll)

Parameters:

• pitch – float

• yaw – float

• roll – float

Return type:

QQuaternion

Creates a QQuaternion from pitch, yaw, and roll. Returns the resulting QQuaternion.

matrix()

Return type:

QMatrix4x4

See also

setMatrix()

Getter of property matrixᅟ .

matrixChanged()

Notification signal of property matrixᅟ .

static rotateAround(point, angle, axis)

Parameters:

• point – QVector3D

• angle – float

• axis – QVector3D

Return type:

QMatrix4x4

Creates a rotation matrix from axis and angle around point. Returns the resulting QMatrix4x4.

static rotateFromAxes(xAxis, yAxis, zAxis)

Parameters:

• xAxis – QVector3D

• yAxis – QVector3D

• zAxis – QVector3D

Return type:

QMatrix4x4

Returns a rotation matrix defined from the axes xAxis, yAxis, zAxis.

rotation()

Return type:

QQuaternion

See also

setRotation()

Getter of property rotationᅟ .

rotationChanged(rotation)

Parameters:

rotation – QQuaternion

Notification signal of property rotationᅟ .

rotationX()

Return type:

float

See also

setRotationX()

Getter of property rotationXᅟ .

rotationXChanged(rotationX)

Parameters:

rotationX – float

Notification signal of property rotationXᅟ .

rotationY()

Return type:

float

See also

setRotationY()

Getter of property rotationYᅟ .

rotationYChanged(rotationY)

Parameters:

rotationY – float

Notification signal of property rotationYᅟ .

rotationZ()

Return type:

float

See also

setRotationZ()

Getter of property rotationZᅟ .

rotationZChanged(rotationZ)

Parameters:

rotationZ – float

Notification signal of property rotationZᅟ .

scale()

Return type:

float

See also

setScale()

Getter of property scaleᅟ .

scale3D()

Return type:

QVector3D

See also

setScale3D()

Getter of property scale3Dᅟ .

scale3DChanged(scale)

Parameters:

scale – QVector3D

Notification signal of property scale3Dᅟ .

scaleChanged(scale)

Parameters:

scale – float

Notification signal of property scaleᅟ .

setMatrix(matrix)

Parameters:

matrix – QMatrix4x4

See also

matrix()

Setter of property matrixᅟ .

setRotation(rotation)

Parameters:

rotation – QQuaternion

See also

rotation()

Setter of property rotationᅟ .

setRotationX(rotationX)

Parameters:

rotationX – float

See also

rotationX()

Setter of property rotationXᅟ .

setRotationY(rotationY)

Parameters:

rotationY – float

See also

rotationY()

Setter of property rotationYᅟ .

setRotationZ(rotationZ)

Parameters:

rotationZ – float

See also

rotationZ()

Setter of property rotationZᅟ .

setScale(scale)

Parameters:

scale – float

See also

scale()

Setter of property scaleᅟ .

setScale3D(scale)

Parameters:

scale – QVector3D

See also

scale3D()

Setter of property scale3Dᅟ .

setTranslation(translation)

Parameters:

translation – QVector3D

See also

translation()

Setter of property translationᅟ .

translation()

Return type:

QVector3D

See also

setTranslation()

Getter of property translationᅟ .

translationChanged(translation)

Parameters:

translation – QVector3D

Notification signal of property translationᅟ .

worldMatrix()

Return type:

QMatrix4x4

Returns the world transformation matrix associated to the QTransform when referenced by a QEntity which may be part of a QEntity hierarchy.

Getter of property worldMatrixᅟ .

worldMatrixChanged(worldMatrix)

Parameters:

worldMatrix – QMatrix4x4

Notification signal of property worldMatrixᅟ .