polygonWind uses the wrong convention

[kimchirichie]

I was looking to use polygonWind to reorient my polygons to be right hand oriented. However there appears to be a mistake in the implementation which incorrectly interprets positive area as clockwise orientation.

geometric/src/polygons/polygonWind.js

Line 10 in 124de1e

const isClockwise = polygonArea(polygon, true) > 0;

The implementation here should be corrected to:

  var isClockwise = polygonArea(polygon, true) < 0;

Conventionally, counterclockwise nets a positive area & polygonArea is correctly implemented.