The radius around center point is great but not ideal for all situations.
Most parking lots are not circular. And since I'm parking my new Tesla in the outer reaches of all parking lots, the circle encompasses way to much area, even spilling over into other businesses, main roads, side roads, etc..
Please consider allowing a choice of rectangle w/ width and height, or circle w/radius.
Both methods rely on choosing a center point for the shape, and then adjust the dimensions.
The "point in circle" test and "point in rectangle" test are both easy enough to program. :)
Customer support service by UserEcho