th,
                        y: 1 - event.y / this.height,
                        dx: deltaX * 5,
                        dy: deltaY * -5
                    });
                }
            };

            // Public methods

            static resize = (width, height, dpr) => {
                this.width = width;
                this.height = height;

                this.renderer.setPixelRatio(dpr);
                this.renderer.setSize(width, height);

                width = Math.round(width * dpr);
  