Module: ol/layer/WebGLTile

Classes

WebGLTileLayer

Type Definitions

Options{Object}

Properties:

Name	Type	Description
style	Style | undefined	Style to apply to the layer.
className	string (defaults to 'ol-layer')	A CSS class name to set to the layer element.
opacity	number (defaults to 1)	Opacity (0, 1).
visible	boolean (defaults to true)	Visibility.
extent	Extent | undefined	The bounding extent for layer rendering. The layer will not be rendered outside of this extent.
zIndex	number | undefined	The z-index for layer rendering. At rendering time, the layers will be ordered, first by Z-index and then by position. When undefined, a zIndex of 0 is assumed for layers that are added to the map's layers collection, or Infinity when the layer's setMap() method was used.
minResolution	number | undefined	The minimum resolution (inclusive) at which this layer will be visible.
maxResolution	number | undefined	The maximum resolution (exclusive) below which this layer will be visible.
minZoom	number | undefined	The minimum view zoom level (exclusive) above which this layer will be visible.
maxZoom	number | undefined	The maximum view zoom level (inclusive) at which this layer will be visible.
preload	number (defaults to 0)	Preload. Load low-resolution tiles up to preload levels. 0 means no preloading.
source	SourceType | undefined	Source for this layer.
sources	Array.<SourceType> | function | undefined	Array of sources for this layer. Takes precedence over source. Can either be an array of sources, or a function that expects an extent and a resolution (in view projection units per pixel) and returns an array of sources. See sourcesFromTileGrid for a helper function to generate sources that are organized in a pyramid following the same pattern as a tile grid. Note: All sources must have the same band count and content.
map	Map | undefined	Sets the layer as overlay on a map. The map will not manage this layer in its layers collection, and the layer will be rendered on top. This is useful for temporary layers. The standard way to add a layer to a map and have it managed by the map is to use addLayer.
useInterimTilesOnError	boolean (defaults to true)	Use interim tiles on error.
cacheSize	number (defaults to 512)	The internal texture cache size. This needs to be large enough to render two zoom levels worth of tiles.
properties	Object.<string, *> | undefined	Arbitrary observable properties. Can be accessed with #get() and #set().

ParsedStyle{Object}

Properties:

Name	Type	Description
vertexShader	string	The vertex shader.
fragmentShader	string	The fragment shader.
uniforms	Object<UniformValue>	Uniform definitions.
paletteTextures	Array<PaletteTexture>	Palette textures.

SourceType{DataTileSource} {TileImage}

Style{Object}

Translates tile data to rendered pixels.

Properties:

Name	Type	Description
variables	Object.<string, (string|number)> | undefined	Style variables. Each variable must hold a number or string. These variables can be used in the color, brightness, contrast, exposure, saturation and gamma expressions, using the ['var', 'varName'] operator. To update style variables, use the updateStyleVariables method.
color	ExpressionValue | undefined	An expression applied to color values.
brightness	ExpressionValue (defaults to 0)	Value used to decrease or increase the layer brightness. Values range from -1 to 1.
contrast	ExpressionValue (defaults to 0)	Value used to decrease or increase the layer contrast. Values range from -1 to 1.
exposure	ExpressionValue (defaults to 0)	Value used to decrease or increase the layer exposure. Values range from -1 to 1.
saturation	ExpressionValue (defaults to 0)	Value used to decrease or increase the layer saturation. Values range from -1 to 1.
gamma	ExpressionValue (defaults to 1)	Apply a gamma correction to the layer. Values range from 0 to infinity.