Rotate cloud text only 3 angles

var this.options = {
    count: 3,
    from: -60,
    to: 60
    };
var from = Math.max(-90, Math.min(90, +this.options.from));
var to = Math.max(-90, Math.min(90, +this.options.to));

var rotateScale = d3.scale.linear().domain([0, this.options.count - 1]).range([from, to]);

this.layout = d3.layout.cloud()
    .timeInterval(Infinity)
    .size([this.getWidth(), this.getHeight()])
    .padding(5)
    .fontSize(function(d) {
        return self.fontSize(+d.value);
    })
    .rotate(function() {
        return rotateScale(~~(Math.random() * self.options.count));
    })
    .text(function(d) {
        return d.text;
    })
    .on("end", draw);