平移自定义事件

Question

如何在三个JS中添加自定义平移事件。在这里，我已禁用轨迹球控件，并将自定义事件用于旋转和缩放功能。在这里，我希望将PAN功能添加到以下代码中。 向我建议一些PAN自定义事件的示例 这是小提琴 https://jsfiddle.net/AjayVenkatesh/e5osm69a/2/

 renderer.domElement.addEventListener('mousedown', event => {
            isDragging = true;
        });

        renderer.domElement.addEventListener('mousemove', function (e) {
            const that = this;
            var deltaMove = {
                x: e.offsetX - previousMousePosition.x,
                y: e.offsetY - previousMousePosition.y
            };

            if (isDragging) {
                var deltaRotationQuaternion = new THREE.Quaternion()
                    .setFromEuler(new THREE.Euler(
                        toRadians(deltaMove.y * 1),
                        toRadians(deltaMove.x * 1),
                        0,
                        'XYZ'
                    ));
                cube.quaternion.multiplyQuaternions(deltaRotationQuaternion, cube.quaternion);
            }
            previousMousePosition = {
                x: e.offsetX,
                y: e.offsetY
            };
        });

        function toRadians(angle) {
            rotateSpeed = 0.1;
            return angle * (Math.PI / 180) * rotateSpeed;
        }