Function isFullCircle

src/lib/angles.js:23–25

* is sector a full circle? * ... this comes up a lot in SVG path-drawing routines * * N.B. we consider all sectors that span more that 2pi 'full' circles * * @param {2-item array} aBnds : angular bounds in *radians* * @return {boolean}

(aBnds)

 * @return {boolean}
 */
function isFullCircle(aBnds) {
    return Math.abs(aBnds[1] - aBnds[0]) > twoPI - 1e-14;
}

/**
 * angular delta between angle 'a' and 'b'