Is the Billboards 3D model free for commercial use?

Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.

What file format is it, and how big is it?

A single binary glTF 2.0 file (.glb), 102 KB: 1,229 triangles, 3,687 vertices and 18 materials, modelled in metres at 12 m × 8.6 m × 7.0 m.

Can I animate Billboards?

It ships as a static mesh. Its 7 named parts are separate nodes, so you can move or animate each one in your engine.

Which engines and tools can open it?

Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.

How was the Billboards 3D model made?

Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.

FREEcommercial use · no sign-up

Billboards

Low-poly rooftop billboard: a framed sunset-over-skyline poster lifted on steel columns with raked back braces on timber roof sleepers, with a catwalk, guard rail and a row of gooseneck floodlights.

Original GLB102 KB Poster

Left rail: colours and the 4 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 1,229
Vertices: 3,687
Meshes · materials: 18 · 18
Size (W × H × D): 12 m × 8.6 m × 7.0 m
File: GLB · 102 KB
Animation: Static
Style: Low-poly
Collection: Rooftop District

Palette · named materials

sunset orange: poster sky field#ed7e1d
brick red light: poster horizon band#db5757
warm white: poster sun, floodlight lenses#f2ede2
brick red: poster front skyline#c32222
brick red dark: poster back skyline, face frame#821717
water-tower brown: poster water tower, roof sleepers#6b4a2e
tar grey: columns and raked braces#757e8a
tar grey dark: face panel back, stringers, X-bracing, base plates, catwalk brackets#525860
tar grey light: guard rail, lamp arms#a3a5a8
dark wood: catwalk deck#3d2a1c
soot black: floodlight heads#1b1b22

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/rooftop-district-billboards/acc1a40d72/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

How it was made

The brief given to 1DesignTool's “3D object” template:

Billboards for the Rooftop District kit. Design it as one clear asset at believable real-world scale for that setting (state the size in metres in meta.notes), with its main parts modelled and named, readable at thumbnail size and from every orbit angle. This is one part of the Rooftop District kit (Low-poly style, flat-lowpoly direction): Life above the streets. Use ONLY the kit palette, by name: brick red #c32222, tar grey #757e8a, sunset orange #ed7e1d, water-tower brown #6b4a2e, brick red dark #821717, tar grey dark #525860, brick red light #db5757, tar grey light #a3a5a8, soot black #1b1b22, warm white #f2ede2, mid grey #7d828c, dark wood #3d2a1c. Every material's `name` must be exactly the palette colour it uses — the GLB carries these names so the kit recolours as one; an unnamed material fails delivery. Kit knob: expose a param `skylineHeight` (0–1, default 0.5) for the kit's "Skyline height" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 7

Billboards
Roof sleepers
Columns, stringers and braces
Face panel and frame
Poster art
Catwalk and rail
Floodlights

Note: Size: 12.4 m wide (X) by 8.6 m tall by 7.0 m deep (Z, from the floodlight heads at the front to the sleeper ends at the back). The poster face is 12 × 4 m, close to a standard 48 × 14 ft bulletin. Its underside sits 4.4 m above the roof. The origin is at the bottom centre of the footprint and the model rests on y = 0, with the poster facing +Z. The poster is single-sided; the back shows the steel framing and the dark panel back. The art is abstract flat shapes (a sun setting behind a brick skyline with one water tower), with no text or logos. Poster layers are single-sided quads 1 to 6 cm proud of the panel, inside a frame that stands 15 cm proud. The exported model has 1,229 triangles in 18 meshes, with no animation clip. Every material is named exactly after a kit palette colour; 11 of the 12 are used (mid grey is not). Some colours appear as more than one same-named material, one per part, so recolouring by name still works. Params are baked into the GLB at their defaults and only change the model when the scene is rebuilt in the viewer. skylineHeight (the kit's 'Skyline height') lifts the face underside from 2.4 m at 0 to 6.4 m at 1, so total height runs from 6.6 to 10.6 m; the legs, braces and sleepers follow. faceWidth sets the face from 8 to 14.6 m and adds columns as it grows. faceHeight sets 3 to 4.3 m, and lampCount sets 3 to 8 floodlights. glb-lint: 0 errors and 6 heuristic warnings. These cover the material count, same-named material copies, non-indexed geometry (deliberate flat shading), poster layers nested on the face, poster meshes in a separate part from the panel they sit on, and an 8.6 m height (correct for the subject). Its verdict reads UNVERIFIED only because no host requirements contract was supplied. plan-check passes except for its part-id regex, which rejects the hyphens in the slug-based ids this library requires. three-check accepts those ids, and all 7 survive the GLB reload.

About the Billboards 3D model

Billboards is a free low-poly 3D model from the Rooftop District set. It measures 12 m × 8.6 m × 7.0 m (W × H × D) at real-world scale and is built from 1,229 triangles across 18 meshes, with 7 named parts. Download the 102 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Billboards 3D model free for commercial use?: Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.
What file format is it, and how big is it?: A single binary glTF 2.0 file (.glb), 102 KB: 1,229 triangles, 3,687 vertices and 18 materials, modelled in metres at 12 m × 8.6 m × 7.0 m.
Can I animate Billboards?: It ships as a static mesh. Its 7 named parts are separate nodes, so you can move or animate each one in your engine.
Which engines and tools can open it?: Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.
How was the Billboards 3D model made?: Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.