AudioListener QML Type▲
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Import Statement: import QtAudioEngine 1.1
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Since: Qt 5.0
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Inherits: Item
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Group: AudioListener is part of multimedia_audioengine
Detailed Description▲
AudioListener will have only one global instance and you can either access it through the listener property of AudioEngine:
Rectangle {
color:"white"
width: 300
height: 500
AudioEngine {
id:audioengine
listener.up:"0,0,1"
listener.velocity:"0,0,0"
listener.direction:"0,1,0"
listener.position:Qt.vector3d(observer.x, observer.y, 0);
}
Item {
id: observer
x: 10 + observer.percent * 100
y: 20 + observer.percent * 80
property real percent: 0
SequentialAnimation on percent {
loops: Animation.Infinite
running: true
NumberAnimation {
duration: 8000
from: 0
to: 1
}
}
}
}or alternatively, by defining an AudioListener outside AudioEngine:
Rectangle {
color:"white"
width: 300
height: 500
AudioEngine {
id:audioengine
listener.up:"0,0,1"
listener.velocity:"0,0,0"
listener.direction:"0,1,0"
}
AudioListener {
engine:audioengine
position: Qt.vector3d(observer.x, observer.y, 0);
}
Item {
id: observer
x: 10 + observer.percent * 100
y: 20 + observer.percent * 80
property real percent: 0
SequentialAnimation on percent {
loops: Animation.Infinite
running: true
NumberAnimation {
duration: 8000
from: 0
to: 1
}
}
}
}This separate AudioListener definition is allowed to make QML bindings easier in some cases.
Property Documentation▲
direction : vector3d▲
This property holds the normalized 3D direction vector of the listener.
engine : QtAudioEngine::AudioEngine▲
This property holds the reference to AudioEngine, and must only be set once.
gain : real▲
This property will modulate all audio output from audio engine instances.
position : vector3d▲
This property holds the 3D position of the listener.
up : vector3d▲
This property holds the normalized 3D up vector of the listener.
velocity : vector3d▲
This property holds the 3D velocity vector of the listener.