Amphitheater Section

Specs

Size: 20.7 × 13.4 × 20.6 m
Triangles: 2,500
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/amphitheater-section.mjs';

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

JSX

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

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

GDScript

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

// Import amphitheater-section.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": "amphitheater-section", "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
`rows`	range	6 to 24, step 1	`16`	Number of seat rows. Every 8 rows a walkway with a low wall starts a new tier. 24 rows rise about 14 m; the outer arcade grows a storey for every ~4.5 m.
`span`	range	15 to 45, step 5	`30`	Angle of the wedge in degrees. 360 / span copies close the ring: 30 degrees needs 12 pieces, 45 needs 8.
`arcade`	toggle	on / off	`true`	The tall outer wall of stacked arches behind the top row, like the Colosseum. Off leaves an open hillside-style theatre edge.
`stone`	choice	`travertine` `sandstone` `marble` `grey`	`travertine`	travertine (warm cream, Rome), sandstone (golden, North Africa and Anatolia), marble (white) or grey (weathered limestone).
`ruin`	range	0 to 1, step 0.05	`0`	0 is complete. Higher values pull seat stones out of the upper rows, knock storeys off the outer arcade and scatter blocks. Adjacent pieces use different damage, so a ruined ring never repeats exactly.

Presets: colosseum wedge {"rows":24,"span":30,"arcade":true,"stone":"travertine"} · provincial arena ruin {"rows":14,"span":30,"arcade":true,"stone":"sandstone","ruin":0.55} · hillside theatre {"rows":12,"span":45,"arcade":false,"stone":"marble","ruin":0.2}

Files

File	What
amphitheater-section.glb	GLB, default look · 352 KB
amphitheater-section.mjs	ES module, every knob live
amphitheater-section.obj	OBJ, static, no colour
amphitheater-section-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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