Compares points based on x value. Y value is ignored.
Return values: 0: If a.x === b.x 1: a is to the right of b (ie. a.x > b.x) -1: a is to the left of b (ie. a.x < b.x)
arrayOfPoints.sort(Points.compareByX); Copy
arrayOfPoints.sort(Points.compareByX);
Compares points based on x value. Y value is ignored.
Return values: 0: If a.x === b.x 1: a is to the right of b (ie. a.x > b.x) -1: a is to the left of b (ie. a.x < b.x)