Capture mouse events and position.
Use Interaction instead if you want clicks on a specific layer.
输出口
Down 按下
A boolean that is true when there is a mouse down on the layer.
有个鼠标按下图层时布尔值为真。
Location 位置
The position of the mouse or touch, relative to the center of the viewer.
鼠标或触摸的位置，相对于查看器的中心。
Related Patches 相关模块
Interaction，Hover
