Function moveFn

src/plots/polar/polar.js:1186–1204

(dx, dy)

    var rprime;

    function moveFn(dx, dy) {
        if(moveFn2) {
            moveFn2(dx, dy);
        } else {
            var dvec = [dx, -dy];
            var rvec = [Math.cos(angle0), Math.sin(angle0)];
            var comp = Math.abs(Lib.dot(dvec, rvec) / Math.sqrt(Lib.dot(dvec, dvec)));

            // mostly perpendicular motions rotate,
            // mostly parallel motions re-range
            if(!isNaN(comp)) {
                moveFn2 = comp < 0.5 ? rotateMove : rerangeMove;
            }
        }

        var update = {};
        computeRadialAxisUpdates(update);
        gd.emit('plotly_relayouting', update);
    }

    function computeRadialAxisUpdates(update) {
        if(angle1 !== null) {