# CloudForms

> Talos next · Since next

What a sculpted cloud layer is built of: how much deck, how many cumulus and towers, how tall, how many anvils, how lumpy, and the seed that places them.

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `seed` | `number` | no | `0` |  | Which sky, a whole number within 0..65535. Another seed moves the deck's banks and breaks, puts every cumulus and tower somewhere else and builds each another way; the same seed is the same sky for everyone in a session. Default 0. |
| `deck` | `number` | no |  |  | How much of a deck there is, within 0..1: 0 is none (cumulus and towers stand alone, with flat bases), 1 a whole rolling deck, broken where `coverage` runs out. Broken, overcast and storm give 1; fair and clear give about 0. |
| `cumulus` | `number` | no |  |  | Share of the 1.7 km grid cells that hold a cumulus pile, within 0..1. The presets give 0.15 (overcast) to 0.42 (clear); 1 is a pile in every cell. Most piles are small and a few are three times as wide. |
| `towers` | `number` | no |  |  | Share of the 8 km grid cells that hold a tower, within 0..1. Broken and storm give about 0.33 (four towers in 40 km); fair, clear and overcast give 0. 1 is a tower in every cell. |
| `anvils` | `number` | no | `0` |  | Share of the tall towers that spread into an anvil at their tops, within 0..1. Default 0.3. |
| `towerHeight` | `number` | no |  |  | Scale on the towers' height, within 0.5..1.5. Default 1 (2.2 to 3.5 km over the cloud base); the layer's `thicknessM` is their ceiling, so raise it for taller towers. |
| `lumps` | `number` | no |  |  | How much of the cauliflower relief is raised on every surface, within 0..1: 0 draws the smooth built forms, 1 (the default) the full lumps and creases. |