# LayoutOptions

Import it from `@grafloria/engine`.

Base options for all layout adapters

```ts
interface LayoutOptions
```

**Properties**

| Name | Type | Default | Description |
| --- | --- | --- | --- |
| `seed?` | `number` |  | Seed for any algorithm that uses randomness (force, spectral, community). |
| `animate?` | `boolean` |  | Whether to animate to new positions |
| `animationDuration?` | `number` |  | Animation duration in milliseconds |
| `fit?` | `boolean` |  | Whether to fit viewport to content after layout |
| `padding?` | `number` |  | Padding around content when fitting |
| `constraints?` | `LayoutConstraints` |  | Layout constraints for pinning/fixing nodes |
| `calculateQuality?` | `boolean` |  | Whether to calculate quality metrics after layout |
| `canvasDimensions?` | `{ width: number; height: number }` |  | Canvas dimensions for quality assessment |
| `portAware?` | `PortAwareLayoutOptions` |  | Port-aware layout options |
| `subgraph?` | `SubgraphLayoutOptions` |  | Subgraph/group layout options |
| `edgeBundling?` | `EdgeBundlingOptions` |  | Edge bundling options |
| `portConstraints?` | `PortConstraintMode` |  | How much freedom the layout engine has over declared ports. `'auto'` (default): FIXED_SIDE for nodes with author-declared ports, FREE for the rest. So an edge leaving a `right` port will not force the layout to put the target on the left. |
| `labelAware?` | `boolean` |  | Reserve space for edge labels at LAYOUT time (default true). |
| `orthogonalRouting?` | `boolean` |  | Ask the layout engine for orthogonal edge routes (default true for ELK). |