ラーメンのどんぶりの渦巻きを描く (Illustrator CS2)

margin = 20;
X = 0; // 開始X座標
Y = 0; // 開始Y座標
LX = 200;
LY = 200;
docObj = app.activeDocument;
pObj = docObj.pathItems.add();
points = [];
points.push([X, Y]);
for (i=0; i<5; i++)
{
points.push([X+LX, Y]);
points.push([X+LX, Y+LY-margin]);
points.push([X+margin, Y+LY-margin]);
points.push([X+margin, Y+margin]);
X = X + margin;
Y = Y + margin;
LX = LX - margin * 2;
LY = LY - margin * 2;
}

pObj.setEntirePath(points);
pObj.filled = false; //　塗りなし
pObj.stroked = true; //　線あり
pObj.strokeWidth = 1; //　線幅1ポイント
pObj.strokeColor = setColor(255,0,0); //　線の色を指定（赤色）

function setColor(r,g,b)
{
var tmpColor = new RGBColor();
tmpColor.red = r;
tmpColor.green = g;
tmpColor.blue = b;
return tmpColor;
}