Qt Quick 3D - RuntimeLoader Example▲
This example shows how to implement a simple asset viewer using the RuntimeLoader.
See the introductory example documentation for an explanation of how to set up a basic scene. Once we have the scene set up we can add the RuntimeLoader item:
RuntimeLoader {
id: importNode
source: importUrl
instancing: instancingButton.checked ? instancing : null
onBoundsChanged: helper.updateBounds(bounds)
}Loading an asset is done by setting the RuntimeLoader's source property. In this example the source is bound to the importUrl which will be changed when the user selects a file in the file-dialog.
Assuming the asset can be loaded, the content will be created as children of the RuntimeLoader importNode. Note that the RuntimeLoader is a Node type, and since it is also the root node for the loaded asset, any transforms applied to the importNode will also affect its children.
Error handling▲
If an asset fails to load then the RuntimeLoader's status property will be set to Error. The RuntimeLoader's errorString can then be queried to get a more detailed description of the error.
In this example we will be displaying the error message in a red message box in the middle of the screen, like this:
Rectangle {
id: messageBox
visible: importNode.status !== RuntimeLoader.Success
color: "red"
width: parent.width * 0.8
height: parent.height * 0.8
anchors.centerIn: parent
radius: Math.min(width, height) / 10
opacity: 0.6
Text {
anchors.fill: parent
font.pixelSize: 36
text: "Status: " + importNode.errorString + "\nPress \"Import...\" to import a model"
color: "white"
wrapMode: Text.Wrap
horizontalAlignment: Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
}
}Moving the camera▲
To make it possible to change the position of the camera we use the WasdController from the Helpers module and bind it to our camera, like this:
OrbitCameraController {
id: orbitController
origin: orbitCameraNode
camera: orbitCamera
enabled: helper.orbitControllerEnabled
}
WasdController {
id: wa