---
title: "Procedural 3D shapes"
package: "@phaser-ae/art-3d"
tier: Free
version: 3.0.0-3
released: 2026-10-14
updated: 2026-10-19
description: "Crystals, boulders, pillars and spires as generated meshes, plus trees and seeded crystal clusters, to dress a 3D scene with no model files."
url: https://phaser.io/packs/art-3d
site: Phaser - https://phaser.io
---

# Procedural 3D shapes

Crystals, boulders, pillars and spires as generated meshes, and the composites they build into: a tree and a cluster
of crystals. A 3D scene can be dressed before there is a single model file.

## What it does

The four shapes are unit-sized, so their scale really is their size in world units, exactly as for every other mesh.
Each is registered as one mesh the first time it is asked for: twenty crystals in a scene share one mesh and one
instanced draw, and a game that never asks for a spire never builds one. Every face points outward by construction,
so the shapes render correctly from any camera angle.

The composites are ordinary objects rather than baked meshes. `tree` returns its trunk and two canopy cones, so the
game can move them together, recolour the canopy or fell the tree. `crystalCluster` lays a scatter of tilted crystals
round a point, and the same seed always lays the same stones.

## Features

- **Four shapes** — `crystal`, `rock`, `pillar` and `spire`, each spawned with the world's own spec for position,
  scale, colour and rotation, with a default colour of its own.
- **One mesh per shape** — built on first use and shared, so many copies cost one instanced draw.
- **Trees** — `tree` takes a position, a scale and leaf and trunk colours, and returns its three parts.
- **Crystal clusters** — `crystalCluster` takes a position, a count, a colour and a seed, and lays the same scatter
  every time.
- **Vertex builders** — `crystalVerts` and the others are plain exports, for a build step or a test.

## Good for

- **Prototypes and jams** in 3D, where the scene needs landmarks before there are models.
- **Cave and crystal levels**, with clusters that differ by seed from level to level.
- **Ruins and temples**, with columns, obelisks and boulders.
- **Low-poly outdoor scenes**, with seeded forests of simple trees.

## Make it yours

A shape takes the same spawn spec as any world object, so it can be stretched, tinted and turned like any mesh. A
tree's scale and two colours change its look, and a cluster's count, colour and seed change its layout. Two different
uses: a crystal cave lit in blues, where every chamber has its own seeded cluster of a dozen shards and a few grey
boulders; and a ruined courtyard of tall pale pillars and dark spires, ringed by trees with autumn-coloured canopies.

## Works with

- `world-3d` — the 3D world the shapes are spawned into.
- `geometry-3d` — the primitives the tree's trunk and canopy come from, and a mesh builder for shapes of your own.
- `model-files-3d` — loads real models once you have them.
- `forest-3d` — for whole forests of trees placed over terrain.

## Good to know

- Four shapes and two composites: it is scene dressing, not a modelling kit. `geometry-3d` builds primitives and
  carves solids when a shape needs more.
- The tree is built from the world's cylinder and cone, so a game that has not composed `geometry-3d` cannot make one.
- The shapes are flat-shaded and low-poly by design.

---

## For AI agents: Phaser AE

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