问题一：对于Area2D.transformPoint方法，需要一个对称的方法将内部坐标转化为屏幕坐标，例如：cameraInverseTransformPoint；
问题二：对于Area2D.transformPoint方法，在抖音小游戏中，由于stage.scaleXY不是1，导致这个函数计算有问题，应该适配一下缩放的情况，例如： static cameraTransformPoint(pos: Laya.Point): Laya.Point {
let areaNode = CameraMgr.getIns().getCameraAreaNode();
if (!areaNode) { // 无主相机时，局部坐标直接等于全局坐标
return pos;
}
let out = new Laya.Point(pos.x, pos.y);

    // @ts-ignore
    let cameraNode = areaNode?._mainCamera as Laya.Camera2D;
    if (!cameraNode) {
        // 如果没有主相机，屏幕坐标就是相对于Area2D的UI坐标 return out;
        return pos;
    }

    let halfWidth = Laya.RenderState2D.width * 0.5;
    let halfHeight = Laya.RenderState2D.height * 0.5;
    let c_x = out.x * Laya.stage.clientScaleX - halfWidth;
    let c_y = out.y * Laya.stage.clientScaleY - halfHeight;
    //获取相机的变换矩阵 this._mainCamera._getCameraTransform();
    let cameraMatrix = cameraNode.cameraMatrix;
    let elements = cameraMatrix.elements;

    let newX = elements[0] * c_x + elements[3] * c_y + elements[6];
    let newY = elements[1] * c_x + elements[4] * c_y + elements[7];

    let matrix = Laya.Matrix.TEMP;
    areaNode.globalTrans.getMatrixInv(matrix);
    out.x = matrix.a * newX + matrix.c * newY + matrix.tx;
    out.y = matrix.b * newX + matrix.d * newY + matrix.ty;

    return out;
}