Mapbox spec: [fill](https://docs.mapbox.com/mapbox-gl-js/style-spec/layers/#fill)
```tsx
import { FillLayer } from '@rnmapbox/maps';
FillLayer
```
FillLayer is a style layer that renders one or more filled (and optionally stroked) polygons on the map.
## props
### id
```tsx
string
```
_required_
A string that uniquely identifies the source in the style to which it is added.
### existing
```tsx
boolean
```
The id refers to an existing layer in the style. Does not create a new layer.
[Change Layer Color](../examples/Map/ChangeLayerColor), [Show and hide layer](../examples/Map/ShowAndHideLayer)
### sourceID
```tsx
string
```
The source from which to obtain the data to style.
If the source has not yet been added to the current style, the behavior is undefined.
Inferred from parent source only if the layer is a direct child to it.
_defaults to:_ `Mapbox.StyleSource.DefaultSourceID`
### sourceLayerID
```tsx
string
```
Identifier of the layer within the source identified by the sourceID property from which the receiver obtains the data to style.
### aboveLayerID
```tsx
string
```
Inserts a layer above aboveLayerID.
### belowLayerID
```tsx
string
```
Inserts a layer below belowLayerID
### layerIndex
```tsx
number
```
Inserts a layer at a specified index
### filter
```tsx
FilterExpression
```
Filter only the features in the source layer that satisfy a condition that you define
### minZoomLevel
```tsx
number
```
The minimum zoom level at which the layer gets parsed and appears.
### maxZoomLevel
```tsx
number
```
The maximum zoom level at which the layer gets parsed and appears.
### slot
```tsx
'bottom' | 'middle' | 'top'
```
The slot this layer is assigned to. If specified, and a slot with that name exists, it will be placed at that position in the layer order.
v11 only
### style
```tsx
FillLayerStyleProps
```
Customizable style attributes
## styles
* fillSortKey
* visibility
* fillAntialias
* fillOpacity
* fillColor
* fillOutlineColor
* fillTranslate
* fillTranslateAnchor
* fillPattern
* fillPatternCrossFade
* fillEmissiveStrength
___
### fillSortKey
Name: `fillSortKey`
Mapbox spec: [fill-sort-key](https://docs.mapbox.com/style-spec/reference/layers/#layout-fill-fill-sort-key)
#### Description
Sorts features in ascending order based on this value. Features with a higher sort key will appear above features with a lower sort key.
#### Type
`number`
#### Expression
Parameters: `zoom, feature`
___
### visibility
Name: `visibility`
Mapbox spec: [visibility](https://docs.mapbox.com/style-spec/reference/layers/#layout-fill-visibility)
#### Description
Whether this layer is displayed.
#### Type
`enum`
#### Default Value
`visible`
#### Supported Values
**visible** - The layer is shown.
**none** - The layer is not shown.
#### Expression
Parameters: ``
___
### fillAntialias
Name: `fillAntialias`
Mapbox spec: [fill-antialias](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-antialias)
#### Description
Whether or not the fill should be antialiased.
#### Type
`boolean`
#### Default Value
`true`
#### Expression
Parameters: `zoom`
___
### fillOpacity
Name: `fillOpacity`
Mapbox spec: [fill-opacity](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-opacity)
#### Description
The opacity of the entire fill layer. In contrast to the `fillColor`, this value will also affect the 1px stroke around the fill, if the stroke is used.
#### Type
`number`
#### Default Value
`1`
#### Minimum
`0`
#### Maximum
`1`
#### Expression
Parameters: `zoom, feature, feature-state, measure-light`
___
### fillOpacityTransition
Name: `fillOpacityTransition`
#### Description
The transition affecting any changes to this layer’s fillOpacity property.
#### Type
`{ duration, delay }`
#### Units
`milliseconds`
#### Default Value
`{duration: 300, delay: 0}`
___
### fillColor
Name: `fillColor`
Mapbox spec: [fill-color](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-color)
#### Description
The color of the filled part of this layer. This color can be specified as `rgba` with an alpha component and the color's opacity will not affect the opacity of the 1px stroke, if it is used.
#### Type
`color`
#### Default Value
`#000000`
#### Disabled By
`fillPattern`
#### Expression
Parameters: `zoom, feature, feature-state, measure-light`
___
### fillColorTransition
Name: `fillColorTransition`
#### Description
The transition affecting any changes to this layer’s fillColor property.
#### Type
`{ duration, delay }`
#### Units
`milliseconds`
#### Default Value
`{duration: 300, delay: 0}`
___
### fillOutlineColor
Name: `fillOutlineColor`
Mapbox spec: [fill-outline-color](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-outline-color)
#### Description
The outline color of the fill. Matches the value of `fillColor` if unspecified.
#### Type
`color`
#### Disabled By
`fillPattern`
#### Expression
Parameters: `zoom, feature, feature-state, measure-light`
___
### fillOutlineColorTransition
Name: `fillOutlineColorTransition`
#### Description
The transition affecting any changes to this layer’s fillOutlineColor property.
#### Type
`{ duration, delay }`
#### Units
`milliseconds`
#### Default Value
`{duration: 300, delay: 0}`
___
### fillTranslate
Name: `fillTranslate`
Mapbox spec: [fill-translate](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-translate)
#### Description
The geometry's offset. Values are [x, y] where negatives indicate left and up, respectively.
#### Type
`array`
#### Default Value
`[0,0]`
#### Units
`pixels`
#### Expression
Parameters: `zoom`
___
### fillTranslateTransition
Name: `fillTranslateTransition`
#### Description
The transition affecting any changes to this layer’s fillTranslate property.
#### Type
`{ duration, delay }`
#### Units
`milliseconds`
#### Default Value
`{duration: 300, delay: 0}`
___
### fillTranslateAnchor
Name: `fillTranslateAnchor`
Mapbox spec: [fill-translate-anchor](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-translate-anchor)
#### Description
Controls the frame of reference for `fillTranslate`.
#### Type
`enum`
#### Default Value
`map`
#### Supported Values
**map** - The fill is translated relative to the map.
**viewport** - The fill is translated relative to the viewport.
#### Requires
`fillTranslate`
#### Expression
Parameters: `zoom`
___
### fillPattern
Name: `fillPattern`
Mapbox spec: [fill-pattern](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-pattern)
#### Description
Name of image in sprite to use for drawing image fills. For seamless patterns, image width and height must be a factor of two (2, 4, 8, ..., 512). Note that zoomDependent expressions will be evaluated only at integer zoom levels.
#### Type
`resolvedImage`
#### Expression
Parameters: `zoom, feature`
___
### fillPatternCrossFade
Name: `fillPatternCrossFade`
Mapbox spec: [fill-pattern-cross-fade](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-pattern-cross-fade)
#### Description
Controls the transition progress between the image variants of fillPattern. Zero means the first variant is used, one is the second, and in between they are blended together. Both images should be the same size and have the same type (either raster or vector).
#### Type
`number`
#### Default Value
`0`
#### Minimum
`0`
#### Maximum
`1`
#### Requires
`linePattern`
#### Expression
Parameters: `zoom, measure-light`
___
### fillEmissiveStrength
Name: `fillEmissiveStrength`
Mapbox spec: [fill-emissive-strength](https://docs.mapbox.com/style-spec/reference/layers/#paint-fill-fill-emissive-strength)
#### Description
Controls the intensity of light emitted on the source features.
#### Type
`number`
#### Default Value
`0`
#### Units
`intensity`
#### Minimum
`0`
#### Requires
`lights`
#### Expression
Parameters: `zoom, measure-light`
___
### fillEmissiveStrengthTransition
Name: `fillEmissiveStrengthTransition`
#### Description
The transition affecting any changes to this layer’s fillEmissiveStrength property.
#### Type
`{ duration, delay }`
#### Units
`milliseconds`
#### Default Value
`{duration: 300, delay: 0}`