Function setConvertAngular

src/plots/polar/set_convert.js:92–177

(ax, polarLayout)

}

function setConvertAngular(ax, polarLayout) {
    var axType = ax.type;

    if(axType === 'linear') {
        var _d2c = ax.d2c;
        var _c2d = ax.c2d;

        ax.d2c = function(v, unit) { return toRadians(_d2c(v), unit); };
        ax.c2d = function(v, unit) { return _c2d(fromRadians(v, unit)); };
    }

    // override makeCalcdata to handle thetaunit and special theta0/dtheta logic
    ax.makeCalcdata = function(trace, coord) {
        var arrayIn = trace[coord];
        var len = trace._length;
        var arrayOut, i;

        var _d2c = function(v) { return ax.d2c(v, trace.thetaunit); };

        if(arrayIn) {
            arrayOut = new Array(len);
            for(i = 0; i < len; i++) {
                arrayOut[i] = _d2c(arrayIn[i]);
            }
        } else {
            var coord0 = coord + '0';
            var dcoord = 'd' + coord;
            var v0 = (coord0 in trace) ? _d2c(trace[coord0]) : 0;
            var dv = (trace[dcoord]) ? _d2c(trace[dcoord]) : (ax.period || 2 * Math.PI) / len;

            arrayOut = new Array(len);
            for(i = 0; i < len; i++) {
                arrayOut[i] = v0 + i * dv;
            }
        }

        return arrayOut;
    };

    // N.B. we mock the axis 'range' here
    ax.setGeometry = function() {
        var sector = polarLayout.sector;
        var sectorInRad = sector.map(deg2rad);
        var dir = {clockwise: -1, counterclockwise: 1}[ax.direction];
        var rot = deg2rad(ax.rotation);

        var rad2g = function(v) { return dir * v + rot; };
        var g2rad = function(v) { return (v - rot) / dir; };

        var rad2c, c2rad;
        var rad2t, t2rad;

        switch(axType) {
            case 'linear':
                c2rad = rad2c = Lib.identity;
                t2rad = deg2rad;
                rad2t = rad2deg;