[ThreeMap](../README.md) > [Extension](../modules/extension.md) > [Extension](../classes/extension.extension-1.md)

# Class: Extension

Base class provided for creating ThreeMap Extensions

## Hierarchy

**Extension**

## Index

### Constructors

* [constructor](extension.extension-1.md#constructor)

### Properties

* [map](extension.extension-1.md#map)
* [onFeature](extension.extension-1.md#onfeature)
* [onTileCreated](extension.extension-1.md#ontilecreated)
* [onTileRemoved](extension.extension-1.md#ontileremoved)
* [onUpdate](extension.extension-1.md#onupdate)
* [style](extension.extension-1.md#style)

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## Constructors

<a id="constructor"></a>

###  constructor

⊕ **new Extension**(handlers: *[IHandlers](../interfaces/extension.ihandlers.md)*): [Extension](extension.extension-1.md)

*Defined in [Extension.ts:70](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L70)*

*__example__*: `new Extension({onFeature: ()=>{}, onTileCreated: ()=>{}, onTileRemoved: ()=>{}, onUpdate: ()=>{}});`

**Parameters:**

| Param | Type | Description |
| ------ | ------ | ------ |
| handlers | [IHandlers](../interfaces/extension.ihandlers.md) |  Functions to apply for ThreeMap's corresponding events. |

**Returns:** [Extension](extension.extension-1.md)

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## Properties

<a id="map"></a>

###  map

**● map**: *`Object3D`*

*Defined in [Extension.ts:50](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L50)*

ThreeMap ThreeJS base object - tiles container

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<a id="onfeature"></a>

###  onFeature

**● onFeature**: *`function`*

*Defined in [Extension.ts:54](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L54)*

Function to be executed when new tile feature is loaded.

#### Type declaration
▸(e: *[IOnFeatureEvent](../interfaces/extension.ionfeatureevent.md)*): `__type`

**Parameters:**

| Param | Type |
| ------ | ------ |
| e | [IOnFeatureEvent](../interfaces/extension.ionfeatureevent.md) |

**Returns:** `__type`

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<a id="ontilecreated"></a>

###  onTileCreated

**● onTileCreated**: *`function`*

*Defined in [Extension.ts:58](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L58)*

Function to be executed when new tile is added to ThreeMap parent element

#### Type declaration
▸(e: *[IOnTileCreatedEvent](../interfaces/extension.iontilecreatedevent.md)*): `__type`

**Parameters:**

| Param | Type |
| ------ | ------ |
| e | [IOnTileCreatedEvent](../interfaces/extension.iontilecreatedevent.md) |

**Returns:** `__type`

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<a id="ontileremoved"></a>

###  onTileRemoved

**● onTileRemoved**: *`function`*

*Defined in [Extension.ts:62](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L62)*

Function to be executed when tile is removed from ThreeMap parent element

#### Type declaration
▸(e: *[IOnTileRemovedEvent](../interfaces/extension.iontileremovedevent.md)*): `__type`

**Parameters:**

| Param | Type |
| ------ | ------ |
| e | [IOnTileRemovedEvent](../interfaces/extension.iontileremovedevent.md) |

**Returns:** `__type`

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<a id="onupdate"></a>

###  onUpdate

**● onUpdate**: *`function`*

*Defined in [Extension.ts:66](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L66)*

Function to be executed on every ThreeJS controls update - e.g. pan, move etc.

#### Type declaration
▸(e: *[IOnUpdateEvent](../interfaces/extension.ionupdateevent.md)*): `__type`

**Parameters:**

| Param | Type |
| ------ | ------ |
| e | [IOnUpdateEvent](../interfaces/extension.ionupdateevent.md) |

**Returns:** `__type`

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<a id="style"></a>

###  style

**● style**: *[IStyle](../interfaces/interfaces.istyle.md)*

*Defined in [Extension.ts:70](https://github.com/areknawo/ThreeMap/blob/master/src/Extension.ts#L70)*

ThreeMap style configuration object

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