rc-js-util/docs/rc-js-util.range2d.extendrange.md

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

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[Home](./index.md) &gt; [rc-js-util](./rc-js-util.md) &gt; [Range2d](./rc-js-util.range2d.md) &gt; [extendRange](./rc-js-util.range2d.extendrange.md)

## Range2d.extendRange() method

**Signature:**

```typescript
extendRange<TResult extends TTypedArray = TArray>(_x: number, _y: number, _writeTo?: Range2d<TResult>): Range2d<TResult>;
```

## Parameters

<table><thead><tr><th>

Parameter


</th><th>

Type


</th><th>

Description


</th></tr></thead>
<tbody><tr><td>

\_x


</td><td>

number


</td><td>


</td></tr>
<tr><td>

\_y


</td><td>

number


</td><td>


</td></tr>
<tr><td>

\_writeTo


</td><td>

[Range2d](./rc-js-util.range2d.md)<!-- -->&lt;TResult&gt;


</td><td>

_(Optional)_


</td></tr>
</tbody></table>
**Returns:**

[Range2d](./rc-js-util.range2d.md)<!-- -->&lt;TResult&gt;