# Buildings

Geometry Type:  <mark style="color:blue;">`meshes`</mark>&#x20;

```javascript
{
     "type": "buildings",
     "geometryType": "meshes",
     "meshes": Mesh[]
},
```

What does a Mesh element contain? This is the example:

```javascript
{
     // The most important element of any meshed geometry for visualization
     "vertices": [x1, y1, z1, x2, y2, z2, ...],
     "descriptor": {
          source: "osm",
          hasDefaultHeight: Boolean,
          hasDefaultRoof: Boolean
     }
},
```

\
An example of how to render meshed geometry in Three.js (more info[three-quick-guide](https://cityweft.gitbook.io/docs/getting-started/three-quick-guide "mention"))

```javascript
const geometry = new THREE.BufferGeometry();
const verticesArray = new Float32Array(mesh.vertices);
geometry.setAttribute( 'position', new THREE.BufferAttribute( verticesArray, 3 ) );
geometry.computeVertexNormals();
```

{% hint style="info" %}
We combine building data from multiple sources. You can use the `source` parameter to identify the specific source of each building.
{% endhint %}

<figure><img src="https://2449447963-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F2ahel6HN9zgEzJ1vY9kr%2Fuploads%2FWnpQUEMYAz49ccTiyTRL%2Fscene-1748950382675%20(1).png?alt=media&#x26;token=8875b982-e68e-4fcd-8092-941fed65eb05" alt=""><figcaption><p>Different colours for different data sources</p></figcaption></figure>


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