class QAspectEngine#

Responsible for handling all the QAbstractAspect subclasses that have been registered with the scene. More…

Synopsis#

Methods#

def __init__()
def aspect()
def aspects()
def executeCommand()
def lookupNode()
def lookupNodes()
def processFrame()
def registerAspect()
def rootEntity()
def runMode()
def setRootEntity()
def setRunMode()
def unregisterAspect()

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 Qt3D run loop is controlled by the Qt3DRender::QAspectEngine.

QAbstractAspect subclasses can be registered by calling Qt3DCore::QAspectEngine::registerAspect() which will take care of registering the aspect and in turn that will call Qt3DCore::QAbstractAspect::onRegistered();

The simulation loop is launched as soon as a root QEntity is set on the QAspectEngine . This is followed by a call to onEngineStartup() on each aspect so that they can start their simulation work.

The simulation loop is stopped when the root entity is set to Qt3DCore::QEntityPtr(). This calls onEngineShutdown() on each aspect so that they can stop performing their simulation work.

Setting a new valid root entity would restart the simulation loop again.

class RunMode#

__init__([parent=None])#

Parameters:: parent – QObject

Constructs a new QAspectEngine with parent.

aspect(name)#

Parameters:: name – str
Return type:: QAbstractAspect

Returns the asepect matching the name

Note

Required that the aspect was registered by name

aspects()#

Return type:: .list of Qt3DCore.QAbstractAspect

Returns the aspects owned by the aspect engine.

executeCommand(command)#

Parameters:: command – str
Return type:: object

Executes the given command on aspect engine. Valid commands are:

“list aspects”

Returns the reply for the command.

lookupNode(id)#

Parameters:: id – QNodeId
Return type:: QNode

lookupNodes(ids)#

Parameters:: ids – .list of Qt3DCore.QNodeId
Return type:: .list of Qt3DCore.QNode

processFrame()#

If using the manual run mode, this function executes the jobs for each aspect. It is blocking and won’t return until all jobs have been completed.

If you are using the QRenderAspect,

registerAspect(aspect)#

Parameters:: aspect – QAbstractAspect

Registers a new aspect to the AspectManager. The QAspectEngine takes ownership of the aspect and will delete it when the aspect is unregistered.

registerAspect(name)

Parameters:: name – str

Registers a new aspect to the AspectManager based on its name Uses the currently set aspect factory to create the actual aspect instance.

rootEntity()#

Return type:: QSharedPointer

Returns the root entity of the aspect engine.

See also

setRootEntity()

runMode()#

Return type:: RunMode

setRootEntity(root)#

Parameters:: root – QSharedPointer

Sets the root entity for the aspect engine.

See also

rootEntity()

setRunMode(mode)#

Parameters:: mode – RunMode

unregisterAspect(aspect)#

Parameters:: aspect – QAbstractAspect

Unregisters and deletes the given aspect.

unregisterAspect(name)

Parameters:: name – str

Unregisters and deletes the aspect with the given name.