Qt Quick 3D - インスタンス・レンダリングの例

RandomInstancing {
    id: randomInstancing
    instanceCount: 1500

    position: InstanceRange {
        from: Qt.vector3d(-300, -200, -500)
        to: Qt.vector3d(300, 200, 200)
    }
    scale: InstanceRange {
        from: Qt.vector3d(1, 1, 1)
        to: Qt.vector3d(10, 10, 10)
        proportional: true
    }
    rotation: InstanceRange {
        from: Qt.vector3d(0, 0, 0)
        to: Qt.vector3d(360, 360, 360)
    }
    color: InstanceRange {
        from: "grey"
        to: "white"
        proportional: true
    }

    randomSeed: 2021
}

InstanceListEntry {
    id: redShip
    position: Qt.vector3d(50, 10, 100)
    eulerRotation: Qt.vector3d(0, 180, 0)
    color: "red"
    NumberAnimation on position.x {
        from: 50
        to: -70
        duration: 8000
    }
}

InstanceListEntry {
    id: greenShip
    position: Qt.vector3d(0, 0, -60)
    eulerRotation: Qt.vector3d(-10, 0, 30)
    color: "green"
}

InstanceListEntry {
    id: blueShip
    position: Qt.vector3d(-100, -100, 0)
    color: "blue"
}

InstanceList {
    id: manualInstancing
    instances: [ redShip, greenShip, blueShip ]
}

Asteroid {
    instancing: randomInstancing
    NumberAnimation on eulerRotation.x {
        from: 0
        to: 360
        duration: 11000
        loops: Animation.Infinite
    }
}

SimpleSpaceship {
    instancing: manualInstancing
}