Three.js - 场景内的边距网格物体

Question

如何在场景中边缘网格物体？这是代码

function initMesh(x, y, z) {
var loader = new THREE.JSONLoader();
loader.load('pleura.js', function(geometry, materials) {
    mesh = new THREE.Mesh(geometry, new THREE.MeshFaceMaterial(materials));
    mesh.scale.x = x;
    mesh.scale.y = y;
    mesh.scale.z = z;
    mesh.opacity=1;
    mesh.translation = THREE.GeometryUtils.center(geometry);
    scene.add(mesh);
});}

这会将网格加载到场景的中心。

谢谢！