944836249154491,
            // bearing: 180,

            centerCross: true,
            doubleClickZoom: false,
            baseLayer: baseLayer,
            zoomControl: true,
            heightFactor: 1.4
        });
        // baseLayer.hide();

        // the ThreeLayer to draw buildings
        var threeLayer = new maptalks.ThreeLayer('t', {
            forceRenderOnMoving: true,
            forceRenderOnRotating: true
            // animation: true
        });


        threeLayer.prepareToDraw = fu