addViewsGroup(cameras) {
        var group = this.gui.addFolder("Views");
        group.open();

        const cameraIds = Object.keys(cameras);
        this.currentCamera = this.scene.graph.default;

        let scene = this.scene;
        let inter = this;

        group.add(this, 'currentCamera', cameraIds).name('Camera').onChange(function(val){
            scene.camera = cameras[val];
            inter.setActiveCamera(cameras[val]);
        });
    }