如何将纹理应用于 Three.js 中的自定义几何图形

我成功地将纹理应用到立方体几何上:

I successfully applied a texture to a cube geometry with this:

var geometry = new THREE.CubeGeometry(10, 10, 10);
var meshMaterial = new THREE.MeshPhongMaterial({ transparent: false, map: THREE.ImageUtils.loadTexture('/app/images/wood.jpg') });
meshMaterial.side = THREE.DoubleSide;
var mesh = new THREE.Mesh(geometry, meshMaterial);

有了这个，我得到了一个漂亮的纹理立方体:

With this I get a nice textured cube like this:

现在我想将相同的纹理(512x512 jpg 图像)应用于我从 STL 加载的自定义模型，这就是我得到的(在这种情况下是金字塔):

Now I want to apply the same texture (512x512 jpg image) to a custom model I'm loading from an STL and this is what I get (in this case a pyramid):

这是代码:

loader.load(jsonParam.url, function (geometry) {
            var meshMaterial = new THREE.MeshPhongMaterial({ transparent: false, map: THREE.ImageUtils.loadTexture('/app/images/wood.jpg') });
            meshMaterial.side = THREE.DoubleSide;

            var mesh = new THREE.Mesh(geometry, meshMaterial);

            mesh.castShadow = false;
            mesh.receiveShadow = true;
            scene.add(mesh);
        });

为什么没有应用纹理，而我只能得到纹理颜色的平均值?

Why the texture is not being applied and I get only what seems to be an average of the texture colors?