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Root bridges

A low-poly living root bridge from the Alien Jungle kit: braided purple roots arch over a 6 m span between two mossy anchor mounds, with twisted root handrails and glowing bulbs hanging underneath. It is a modular piece that snaps end to end on a 1 m grid.

Original GLB585 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: 8,170
Vertices: 24,510
Meshes · materials: 9 · 9
Size (W × H × D): 2.5 m × 2.0 m × 6.0 m
File: GLB · 585 KB
Animation: Static
Style: Low-poly
Collection: Alien Jungle

Palette · named materials

base (deck roots, anchors, aerial roots)#432055
trim (handrails, posts)#8f1968
accent (cross roots)#3d2a1c
earth (anchor mounds)#1a4d4d
foliage (moss)#2d8686
glow (bulbs, rail nodules) — default#3a883a

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/alien-jungle-root-bridges/04f358b4c9/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:

Root bridges for the Alien Jungle 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. It is a modular piece that snaps on a 1 m grid: give it a length in whole metres and put the origin at its snapping end, stated in meta.notes. This is one part of the Alien Jungle kit (Low-poly style, flat-lowpoly direction): A glowing forest on another world. Use ONLY the kit palette, by name: teal #2d8686, magenta #d02597, bioluminescent green #3a883a, deep purple #432055, teal dark #1a4d4d, magenta dark #8f1968, teal light #46b9b9, magenta light #de63b5, 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 `glowColour` (0–1, default 0.5) for the kit's "Glow colour" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Generation: 1.76M tokens (93% cached) · ≈ $1.73 at API prices · 5-hour plan +6%
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

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Named parts · 10

Root bridge
Deck roots
Cross roots
Handrails
Rail posts
Root anchors
Anchor mounds
Aerial roots
Glow bulbs
Moss tufts

Note: Size at default params: 6 m long (Z), 2.03 m tall, about 2.5 m wide at the anchor roots; the walkway between the handrails is about 1.3 m wide, the deck sits 0.4 m up at the ends and 1.0 m at mid-span. Modular: the length is always a whole number of metres (4–10 m, default 6 m) and snaps on a 1 m grid. The origin is the snapping end, at the centre of the end face on y = 0; the bridge runs from z = 0 to z = −length, so the front faces +Z. Both end faces are cut flat at the end planes and the anchor mounds are half-mounds, so two bridges placed end to end close into one mound; nothing crosses either end plane. Exported model: 8170 triangles, 9 meshes, no animation clip (static piece). Materials are named exactly after Alien Jungle palette colours; the exporter writes one material per mesh, so 'deep purple' and 'magenta dark' each appear more than once with identical settings — recolour by name. glowColour picks one palette glow in steps rather than blending: 0–0.33 teal light, 0.33–0.66 bioluminescent green (default), 0.66–1 magenta light; the glow is a glTF emissive colour only, with no bloom in the file. Facets are baked into non-indexed geometry with flat normals so the low-poly look survives any importer. Library part ids sit on the meshes; each mesh is wrapped in a group named rootbridges.* because the kit's plan format allows no hyphen in the first part-id segment. The viewer's ground disc and light rig are staging only and are not in the GLB. glb-lint: 0 errors; 4 heuristic warnings that are expected (repeated material names from per-mesh export, non-indexed flat-shaded geometry, merged parts that interlock rather than touch, and a height above the 1 m reference). Its verdict reads UNVERIFIED only because no requirements contract was supplied.