Viewport {
        anchors.fill: parent
 
        light: [ Light {
                    id: light0
                    position: Qt.vector3d(-15,10,5)
                    diffuseColor: "white"
 
                },
                  Light {
                    id: light1
                    position: Qt.vector3d(15,-10,5)
                    diffuseColor: "white"
                }
}