Function calcRotate

src/traces/pie/plot.js:832–834

(t)

}

function calcRotate(t) {
    return (((180 / Math.PI) * t + 720) % 180) - 90;
}

function calcMaxHalfSize(a, halfAngle, r, ring) {
    var q = a + 1 / (2 * Math.tan(halfAngle));