# Iron Bound Gate Bay 4 m (Medieval Siege and Castle Defence)

Gate bay on the wall grid: an arched tunnel, two iron bound oak leaves on their hinges and a drawbar that slides into the wall socket.

- **URL:** https://3dassets.dev/assets/medieval-siege-and-castle-defence-assault-gate-4m-e03bd748
- **GLB (direct, CORS *, immutable):** https://cdn.3dassets.dev/assets/28838/v1/model.glb
- **Download (counted):** https://3dassets.dev/download/medieval-siege-and-castle-defence-assault-gate-4m-e03bd748
- **Licence:** CC0 1.0 Universal: https://creativecommons.org/publicdomain/zero/1.0/ (no attribution required)
- **Contributor:** 3D Assets (@3dassets): https://3dassets.dev/u/3dassets
- **Category:** Buildings & Architecture
- **Tags:** Medieval, Low Poly, Kit / Set, Animated, Modular
- **Geometry:** 1,048 triangles, 3,144 vertices, 8 meshes, 4 materials, 0 textures
- **Size (m):** 4.1 × 4.6 × 2.471
- **Animations:** gate-open, gate-close, bar-open, bar-close
- **File size:** 0.05 MB
- **Downloads:** 0
- **AI used (contributor-reported):** yes; model: Claude Fable 5.1

## About

The gate bay of the wall run. A 1.8 m arched tunnel through a 4 m bay carries two oak leaves strapped and studded in iron, hung on the jambs, with a squared drawbar behind them that slides into a socket cut in the pier. The gate clips swing both leaves together and the bar clips run it into and out of its socket, so the bay reads shut, barred or forced. Dimensions 4.10 × 4.60 × 2.47 m (X × Y × Z). Pivot on the grid origin with named connector ports. Metre units, +Y up, +Z forward. Kingdom limestone, ashlar, timber, oak, iron, cloth, slate and straw, the palette shared with the castle construction and faction building packs. Rigid node-transform clips gate-open, gate-close, bar-open, bar-close turn named parts on their own pivots. No skinning, no skeleton, no collision or navigation data.

## Use with three.js

```js
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
import { AnimationMixer } from 'three'

let mixer

const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/28838/v1/model.glb', (gltf) => {
  scene.add(gltf.scene)
  mixer = new AnimationMixer(gltf.scene)
  mixer.clipAction(gltf.animations[0]).play()
})

// Call from your render loop; deltaSeconds is time since the previous frame.
function updateAssetAnimation(deltaSeconds) {
  mixer?.update(deltaSeconds)
}
```

## React Three Fiber

```jsx
import { useGLTF, useAnimations } from '@react-three/drei'
import { useEffect } from 'react'

export function IronBoundGateBay4MMedievalSiegeAndCastleDefence(props) {
  const { scene, animations } = useGLTF('https://cdn.3dassets.dev/assets/28838/v1/model.glb')
  const { actions, names } = useAnimations(animations, scene)
  useEffect(() => {
    const action = actions[names[0]]
    action?.reset().play()
    return () => { action?.stop() }
  }, [actions, names])
  return <primitive object={scene} {...props} />
}
useGLTF.preload('https://cdn.3dassets.dev/assets/28838/v1/model.glb')
```

## <model-viewer>

```html
<model-viewer src="https://cdn.3dassets.dev/assets/28838/v1/model.glb" alt="Iron Bound Gate Bay 4 m (Medieval Siege and Castle Defence)" camera-controls auto-rotate autoplay></model-viewer>
```

## Blender

```python
# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.
import bpy
bpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/28838/v1/model.glb
# Metres and +Y up are converted to Blender's Z-up scene automatically.
# Clips arrive as actions; play them from the Dope Sheet > Action Editor.
```

## Godot

```gdscript
# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.
var packed := load("res://models/model.glb") as PackedScene
var model := packed.instantiate()
add_child(model)
var player := model.find_child("AnimationPlayer", true, false) as AnimationPlayer
player.play(player.get_animation_list()[0])
```

## Unity

```csharp
// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,
// or load it at runtime straight from the CDN:
using GLTFast;
var gltf = new GltfImport();
if (await gltf.Load("https://cdn.3dassets.dev/assets/28838/v1/model.glb")) await gltf.InstantiateMainSceneAsync(transform);
// Clips import as legacy AnimationClips on the root; GetComponent<Animation>().Play() starts the first.
```

---
JSON: https://3dassets.dev/api/v1/assets/medieval-siege-and-castle-defence-assault-gate-4m-e03bd748 · Loads with a plain GLTFLoader: no Draco/KTX2 loaders needed.