V2 cropper-selection with custom shape

[o15a3d4l11s2]

How can I add a custom shape for the <cropper-selection>, so that I can visualise the selection area and then crop it in my desired shape? I know there is an example from V1 (https://github.com/fengyuanchen/cropperjs/blob/main/docs/examples/crop-a-round-image.html), but how to achieve mainly the <cropper-selection> shape in V2?

[fengyuanchen]

I have no idea about this. Maybe you can follow the v1 demo to do a similar thing.