継ぎ足し方式で線を描く

Subjoined Line (1) | CreateJS
太さを 3 に設定しているのに、太さ 1 になってしまう。

CreateJS 1.0.0 にしたら、直った！
Subjoined Line (1) | CreateJS

var graph = new createjs.Shape();
stage.addChild(graph);
var count;
$("#button-play").on("click", playLine);
function playLine(event) {
    graph.graphics.clear();
    graph.graphics.setStrokeStyle(3, "round", "round");
    graph.graphics.beginStroke("#FF3366");
    graph.graphics.moveTo(-320, -120*Math.sin(-320*RADIAN));

    count = -320;
    createjs.Ticker.addEventListener("tick", updateLine);
}
function updateLine(event) {
    count += 4;

    var px = count;
    var py = 120*Math.sin(px*RADIAN);
    graph.graphics.lineTo(px, -py);

    if (count == 320) {
        graph.graphics.endStroke();
        createjs.Ticker.removeEventListener("tick", updateLine);
    }
}

Subjoined Line (2) | CreateJS
太さを 3 に再設定して、さらに moveTo() しないと、太さ 3 にならない。

var graph = new createjs.Shape();
stage.addChild(graph);
var count;
$("#button-play").on("click", playLine);
function playLine(event) {
    graph.graphics.clear();
    graph.graphics.setStrokeStyle(3, "round", "round");
    graph.graphics.beginStroke("#FF3366");
    graph.graphics.moveTo(-320, -120*Math.sin(-320*RADIAN));

    count = -320;
    createjs.Ticker.addEventListener("tick", updateLine);
}
function updateLine(event) {
    count += 4;

    var px = count;
    var py = 120*Math.sin(px*RADIAN);
    graph.graphics.lineTo(px, -py);
    //太さを再設定
    graph.graphics.setStrokeStyle(3, "round", "round");
    graph.graphics.moveTo(px, -py);

    if (count == 320) {
        graph.graphics.endStroke();
        createjs.Ticker.removeEventListener("tick", updateLine);
    }
}