Roman Triumphal Arch

Specs

Size: 13.5 × 15.1 × 6.5 m
Triangles: 3,368
Draw calls: 1
Knobs: 5
Night lights: 0

Passed the validator: real scale, rests on y = 0, front faces +Z, deterministic.

Use it

Code for the specimen as it is set up above; it follows your knobs.

JavaScript

import { createAsset } from 'https://gaitkit.com/cdn/roman-arch.mjs';

const romanArch = createAsset();
scene.add(romanArch);                      // rests on y = 0, front faces +Z

JSX

import { useMemo } from 'react';
import { createAsset } from 'https://gaitkit.com/cdn/roman-arch.mjs';

export function RomanArch() {
  const model = useMemo(() => createAsset(), []);
  return <primitive object={model} />;
}

GDScript

# Import roman-arch.glb (download below). It is a static mesh, one material per colour.
add_child(preload("res://roman-arch.glb").instantiate())

// Import roman-arch.glb with glTFast (com.unity.cloud.gltfast).
// Drop it in the scene: 1 unit = 1 metre, +Z is its front.

Prompt

Use the gaitkit MCP server: get_variant({ "id": "roman-arch", "want": "default look" })
then place the result.

# MCP endpoint
https://gaitkit.com/mcp

More in the docs; agents can fetch all of this through MCP.

Knobs

Knob	Type	Values	Default	What it does
`bays`	choice	`single` `triple`	`single`	single (one 5.4 m wide archway, 13.5 m wide monument) or triple (a 6.5 m central arch flanked by two 3.4 m side arches, 25.6 m wide, 21 m tall).
`stone`	choice	`travertine` `marble` `sandstone` `grey`	`travertine`	travertine (warm cream, Rome), marble (bright white), sandstone (golden, provincial cities) or grey (weathered grey limestone).
`attic`	toggle	on / off	`true`	The tall block above the cornice with a blank framed panel where a dedication would go. Off ends the arch at the cornice.
`columns`	toggle	on / off	`true`	Engaged columns standing on pedestals against both faces, carrying the cornice. Off leaves flat piers.
`ruin`	range	0 to 1, step 0.05	`0`	0 is complete. Rising values break up the attic first, then the cornice and columns, then bite into the crown of the masonry, with fallen blocks around the foot. The arches themselves always stay standing.

Presets: arch of the emperor {"bays":"triple","stone":"marble","attic":true,"columns":true} · forum ruin {"bays":"single","stone":"travertine","ruin":0.65} · provincial gate {"bays":"single","stone":"sandstone","attic":false,"columns":true,"ruin":0.2}

Files

File	What
roman-arch.glb	GLB, default look · 455 KB
roman-arch.mjs	ES module, every knob live
roman-arch.obj	OBJ, static, no colour
roman-arch-params.json	knob schema, presets, night zones

Licence

Use it in games, apps, renders and client work, commercially and without credit. Do not resell it as an asset or train a 3D generator on it. The full licence.

Tune it

Specs

Use it

Knobs

Files

Licence

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