QBoundingVolume#

can be used to override the bounding volume of an entity. More…

Inheritance diagram of PySide6.Qt3DCore.Qt3DCore.QBoundingVolume

Inherited by: QPickingProxy, QGeometryRenderer, QMesh, QTorusMesh, QSphereMesh, QPlaneMesh, QExtrudedTextMesh, QCylinderMesh, QCuboidMesh, QConeMesh

Synopsis#

Properties#

Functions#

Slots#

Signals#

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#

An entity’s bounding volume is used for many operations such as picking or view frustum culling. It is normally computed by traversing the rendered geometry.

QBoundingVolume can be used when the extent of the geometry is known to the application so that Qt 3D does not have to compute it.

A bounding volume can be provided either as minimum and maximum extent coordinates, or a separate, usually simpler, geometry that approximates the rendered mesh.

When using minimum and maximum extents, these are considered to be the opposite corners of an axis aligned bounding box, in the geometry’s local coordinate system.

QBoundingVolume can also be used to query the computed bounding volume of a GeometryView . The implicitMinPoint and implicitMaxPoint properties will be updated if the geometry changes. Note that this is done asynchronously on a background thread so you should check the value of implicitPointsValid before reading them.

You can force the implicit extents to be updated by calling updateImplicitBounds . This will block on the calling thread until the results are available.

Note

GeometryRenderer inherits BoundingVolume and thus supports reading implicit bounds or setting explicit bounds also.

class PySide6.Qt3DCore.Qt3DCore.QBoundingVolume([parent=None])#
Parameters:

parent – PySide6.Qt3DCore.Qt3DCore.QNode

Constructs a new QBoundingVolume with parent.

Note

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

property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMaxPoint: PySide6.QtGui.QVector3D#

* * * Holds maximum extent of the bounding volume computed from the specified view.

Access functions:
property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMinPoint: PySide6.QtGui.QVector3D#

* * * Holds minimum extent of the bounding volume computed from the specified view.

Access functions:
property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitPointsValid: bool#

* * * True if a view has been assigned and the implicit extent properties are up to date. * *

Access functions:
property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.maxPoint: PySide6.QtGui.QVector3D#

* * * User specified maximum extent of the bounding volume. When set (along with minimum * extent), this will be used internally to avoid computing the volume from the * geometry.

Access functions:
property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.minPoint: PySide6.QtGui.QVector3D#

* * * User specified minimum extent of the bounding volume. When set (along with maximum * extent), this will be used internally to avoid computing the volume from the * geometry.

Access functions:
property PᅟySide6.Qt3DCore.Qt3DCore.QBoundingVolume.view: PySide6.Qt3DCore.Qt3DCore.QGeometryView#

* * * Holds a pointer to the instance of QGeometryView which will be used, if set, * to compute the bounding volume.

Access functions:
PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.areImplicitPointsValid()#
Return type:

bool

Getter of property implicitPointsValid .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMaxPoint()#
Return type:

PySide6.QtGui.QVector3D

Getter of property implicitMaxPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMaxPointChanged(implicitMaxPoint)#
Parameters:

implicitMaxPoint – PySide6.QtGui.QVector3D

Notification signal of property implicitMaxPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMinPoint()#
Return type:

PySide6.QtGui.QVector3D

Getter of property implicitMinPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitMinPointChanged(implicitMinPoint)#
Parameters:

implicitMinPoint – PySide6.QtGui.QVector3D

Notification signal of property implicitMinPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.implicitPointsValidChanged(implicitPointsValid)#
Parameters:

implicitPointsValid – bool

Notification signal of property implicitPointsValid .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.maxPoint()#
Return type:

PySide6.QtGui.QVector3D

See also

setMaxPoint()

Getter of property maxPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.maxPointChanged(maxPoint)#
Parameters:

maxPoint – PySide6.QtGui.QVector3D

Notification signal of property maxPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.minPoint()#
Return type:

PySide6.QtGui.QVector3D

See also

setMinPoint()

Getter of property minPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.minPointChanged(minPoint)#
Parameters:

minPoint – PySide6.QtGui.QVector3D

Notification signal of property minPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.setMaxPoint(maxPoint)#
Parameters:

maxPoint – PySide6.QtGui.QVector3D

See also

maxPoint()

Setter of property maxPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.setMinPoint(minPoint)#
Parameters:

minPoint – PySide6.QtGui.QVector3D

See also

minPoint()

Setter of property minPoint .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.setView(view)#
Parameters:

view – PySide6.Qt3DCore.Qt3DCore.QGeometryView

See also

view()

Setter of property view .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.updateImplicitBounds()#
Return type:

bool

* Updates the implicit bounds of the specified view. Returns * true if the computation succeeded and false otherwise. * *

Note

The calculations are done in the call thread, this * could take significant time for large meshes.

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.view()#
Return type:

PySide6.Qt3DCore.Qt3DCore.QGeometryView

See also

setView()

Getter of property view .

PySide6.Qt3DCore.Qt3DCore.QBoundingVolume.viewChanged(view)#
Parameters:

view – PySide6.Qt3DCore.Qt3DCore.QGeometryView

Notification signal of property view .