{"data":{"id":"24604","slug":"animated-mechanisms-kit-bascule-deck-3be97e65","title":"Bascule bridge leaf with counterweight (Animated Mechanisms Kit)","summary":"Single leaf lifting bridge: a 4.2 m railed deck on trunnion bearings between two pier walls, with a concrete counterweight that swings down into the chase and an operator cabin.","description":"Two 1.5 m pier walls with capping plates leave a central chase and carry trunnion bearings at 1.5 m. The deck is a 4 m by 4.2 m steel span on a torsion box with post and rail parapets and amber end bands; the counterweight box swings into the chase behind the pivot. Overall size 4.66 x 2.48 x 6.5 m in metres, +Y up, +Z forward, resting on y=0. Nodes `leaf` and `counterweight` share the trunnion axis at y=1.5, z=-0.3, parallel to X. Clips: `open` raises the leaf to 71 degrees over 2.6 s while the counterweight drops into the chase, `close` lowers it. Node TRS animation on named nodes only; no skinned rig, skeleton, collision or navigation data.","status":"published","url":"https://3dassets.dev/assets/animated-mechanisms-kit-bascule-deck-3be97e65","cdnUrl":"https://cdn.3dassets.dev/assets/24604/v1/model.glb","downloadUrl":"https://3dassets.dev/download/animated-mechanisms-kit-bascule-deck-3be97e65","thumbnailUrl":"https://cdn.3dassets.dev/assets/24604/v1/thumb.webp","posterUrl":"https://cdn.3dassets.dev/assets/24604/v1/poster.webp","blurhash":"U27d:;DN00tnR6?cM_Dj00XV~q%Lkq00-=?v","category":{"slug":"roads-infrastructure","title":"Roads & Infrastructure"},"tags":[{"slug":"modern","title":"Modern"},{"slug":"low-poly","title":"Low Poly"},{"slug":"animated","title":"Animated"},{"slug":"exterior","title":"Exterior"}],"license":{"slug":"cc0-1.0","name":"CC0 1.0 Universal","url":"https://creativecommons.org/publicdomain/zero/1.0/","attributionRequired":false},"contributor":{"username":"3dassets","name":"3D Assets","url":"https://3dassets.dev/u/3dassets"},"stats":{"fileSize":27808,"triangles":468,"vertices":1404,"meshes":8,"materials":5,"textures":0,"animations":["open","close"],"boundingBox":{"min":[-2.3299999237060547,0.00003483463738718218,-2.4499386403370624],"max":[2.3299999237060547,2.4799527479097767,4.050000381469727]},"sizeMeters":[4.66,2.48,6.5],"hasDraco":false,"hasMeshopt":false,"hasKTX2":false,"extensionsUsed":["KHR_materials_transmission","KHR_mesh_quantization"]},"aiGenerated":true,"aiModel":"Claude Fable 5.1","downloads":0,"publishedAt":"2026-09-07T20:27:01.029Z","updatedAt":"2026-09-07T20:27:01.119Z","usage":{"threejs":"import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'\nimport { AnimationMixer } from 'three'\n\nlet mixer\n\nconst loader = new GLTFLoader()\nloader.load('https://cdn.3dassets.dev/assets/24604/v1/model.glb', (gltf) => {\n  scene.add(gltf.scene)\n  mixer = new AnimationMixer(gltf.scene)\n  mixer.clipAction(gltf.animations[0]).play()\n})\n\n// Call from your render loop; deltaSeconds is time since the previous frame.\nfunction updateAssetAnimation(deltaSeconds) {\n  mixer?.update(deltaSeconds)\n}","r3f":"import { useGLTF, useAnimations } from '@react-three/drei'\nimport { useEffect } from 'react'\n\nexport function BasculeBridgeLeafWithCounterweightAnimatedMechanismsKit(props) {\n  const { scene, animations } = useGLTF('https://cdn.3dassets.dev/assets/24604/v1/model.glb')\n  const { actions, names } = useAnimations(animations, scene)\n  useEffect(() => {\n    const action = actions[names[0]]\n    action?.reset().play()\n    return () => { action?.stop() }\n  }, [actions, names])\n  return <primitive object={scene} {...props} />\n}\nuseGLTF.preload('https://cdn.3dassets.dev/assets/24604/v1/model.glb')","modelViewer":"<model-viewer src=\"https://cdn.3dassets.dev/assets/24604/v1/model.glb\" alt=\"Bascule bridge leaf with counterweight (Animated Mechanisms Kit)\" camera-controls auto-rotate autoplay></model-viewer>","blender":"# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.\nimport bpy\nbpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/24604/v1/model.glb\n# Metres and +Y up are converted to Blender's Z-up scene automatically.\n# Clips arrive as actions; play them from the Dope Sheet > Action Editor.","godot":"# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.\nvar packed := load(\"res://models/model.glb\") as PackedScene\nvar model := packed.instantiate()\nadd_child(model)\nvar player := model.find_child(\"AnimationPlayer\", true, false) as AnimationPlayer\nplayer.play(player.get_animation_list()[0])","unity":"// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,\n// or load it at runtime straight from the CDN:\nusing GLTFast;\nvar gltf = new GltfImport();\nif (await gltf.Load(\"https://cdn.3dassets.dev/assets/24604/v1/model.glb\")) await gltf.InstantiateMainSceneAsync(transform);\n// Clips import as legacy AnimationClips on the root; GetComponent<Animation>().Play() starts the first."}}}