Qt 3D: Scene3DView QML Example

This example demonstrates visualizing multiple 3D scenes from a Qt Quick application usinc Scene3D and Scene3DView. Each 3D scene contains a single active camera and a single active light source. Visualized data is assumed to be at a fixed location.

Running the Example

To run the example from Qt Creator, open the Welcome mode and select the example from Examples. For more information, visit Building and Running an Example.

Visualizing 3D Scenes

First we set up a Scene3D instance that will be required for our Scene3DView instanced.

 Scene3D {
     id: scene3dInstance
     anchors.fill: parent
     focus: true
     aspects: ["input", "logic"]
     cameraAspectRatioMode: Scene3D.AutomaticAspectRatio
     multisample: true
 }

Then we instanciate our Scene3DView instances and make them reference the Scene3D. We also provide a root Entity for each Scene3DView with a scene3dview/AnimatedEntity.qml.

 Rectangle {
     width: grid.cellWidth
     height: grid.cellHeight
     color: "darkRed"
     scale: ma.pressed || ma.containsMouse ? 0.8 : 1
     Behavior on scale { NumberAnimation { duration: 750 } }

     Scene3DView {
         onXChanged: console.log(("X (%1): %2").arg(model.index).arg(x))
         scene3D: scene3dInstance
         anchors.fill: parent
         AnimatedEntity {
             sceneColor: grid.colors[model.index]
             // Only clear the color for the first Scene3DView
             clearColor: model.index === 0
         }
     }
     Text {
         anchors {
             horizontalCenter: parent.horizontalCenter
             bottom: parent.bottom
         }

         color: "white"
         font.bold: true
         text: "Scene3DView " + (model.index + 1)
     }

     MouseArea {
         id: ma
         anchors.fill: parent
         hoverEnabled: true
     }
 }

Care has to be taken that only the first Scene3DView clears the color buffer. We don't want each Scene3DView to clear the screen as that would erase content for all but the last Scene3DView.

 // Only clear the color for the first Scene3DView
 clearColor: model.index === 0

Example project @ code.qt.io