Feature request: turf.circle

This is a proposal to add a function that creates a circle (approximated polygon) given a point and a radius. Example:

var point = turf.point([52.521921, 13.399553]);
var circle = turf.circle(point, 50, "km");

When the buffer issue is fixed, the implementation can just be a call to buffer with the point. However, I think this function is useful in itself, and might be easier to implement.

My use case is to be able to specify an area either as a polygon or a circle and using turf.within to check my points, instead of having two different code paths (turf.within vs. turf.distance(...) < radius).

Some extra thoughts:

1. The function could take an optional options, where you can specify the number of segments and/or a precision. I think the function should have some defaults built-in to provide a good number of segments depending on the radius.
2. If it’s too hard to make it work around the north/south poles, I think in the beginning it could be documented as a known issue. At least my own use case is related to major cities around the world.

[mstdokumaci]

turf.circle is here now: https://github.com/Turfjs/turf/tree/master/packages/turf-circle

[DenisCarriere]

Woohoo! Been looking for this update for a long time 👍