Draw the perimeter MapView ios

Question

I'm trying to implement something like that. I will draw locations on the map, and will give the user the option to mark the area he wants to list the points only inside where he designed.

It would be something like the attached image.

I could not upload the image, I posted it here
ie after he has drawn an area on the map, I show the points where he scored within

Answer 1

为什么不让用户放大以使他们想要看到的区域充满屏幕呢？