        });
        //gltf模型的路径
        var url0 = 'gltf/cube-animation/cube.gltf';
        var url1 = 'gltf/DamagedHelmet/glTF/DamagedHelmet.gltf';
        var url2 = 'gltf/Duck/Duck.glb';
        var url3 = 'gltf/AnimatedMorphCube/glTF/AnimatedMorphCube.gltf';
        var url4 = 'gltf/shanghai-sandboxie/scene.gltf';
        var url5 = 'gltf/tyb/太阳板.gltf';
        var url6 = 'gltf/RobotExpressive/RobotExpressive.glb';
        var url7 = 'gltf/CesiumMan/CesiumMan.gltf';
        var url8 = 'g