void Update()
{
if (isPickedItem == true)
{
Vector2 position;
RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, Input.mousePosition, null, out position);
pickedItem.SetLocalPosition(position);
}
else if (isTipShow == true)
{
//控制提示面板跟随鼠标
Vector2 position;
RectTransformUtility.ScreenPointToLocalPointInRectangle(canvas.transform as RectTransform, Input.mousePosition, null, out position);
tip.SetLocalPosition(position + new Vector2(10, -10));//后面加的是关于中心的的偏移
}
}