ial.uniforms.uIntensity.value,
                        callback: value => {
                            caMaterial.uniforms.uIntensity.value = value;
                        }
                    }
                ];

                items.forEach(data => {
                    this.ui.addPanel(new PanelItem(data));
                });
            }

            // Public methods

            static update = time => {
                if (!this.ui) {
                    return;
                }

            