Class: GlobusTerrain

Constructor

new GlobusTerrain(nameopt, optionsopt)

Parameters:

Name Type Attributes Default Description

name

string

Terrain provider name.

options

IGlobusTerrainParams

Provider options:

Properties

Name	Type	Attributes	Default	Description
`minZoom`	number	<optional>	3	Minimal visible zoom index when terrain handler works.
`maxZoom`	number	<optional>	14	Maximal visible zoom index when terrain handler works.
`maxNativeZoom`	number	<optional>	14	Maximal available terrain zoom level.
`url`	string	<optional>	"https://{s}.srtm3.openglobus.org/{z}/{y}/{x}.ddm"	Terrain source URL template.
`gridSizeByZoom`	Array.<number>	<optional>		Segment triangulation grid sizes where array index matches segment zoom index.
`plainGridSize`	number	<optional>	32	Elevation grid size. Default is 32x32. Must be power of two.
`heightFactor`	number	<optional>	1	Elevation height multiplier.
`cache`	FetchCache	<optional>	"default"	Fetch cache mode.

Source: terrain/GlobusTerrain.ts, line 40

Fires:

event:load
event:loadend

Extends

EmptyTerrain

Methods

(protected) _applyElevationsData()

Source: terrain/GlobusTerrain.ts, line 499

_createHeights() → {Array.<number>|TypedArray}

Converts loaded data to segment elevation data type(column major elevation data array in meters)

Source: terrain/GlobusTerrain.ts, line 474

Returns:

Column-major elevation data array in meters.

Type:: Array.<number> | TypedArray

(protected) _createUrl(segment) → {string}

Creates default query url string.

Parameters:

Name	Type	Description
`segment`	Segment	Segment to create URL for.

Source: terrain/GlobusTerrain.ts, line 438

Returns:

URL string.

Type:: string

(protected) _getHTTPRequestString(segment) → {string}

Returns actual url query string.

Parameters:

Name	Type	Description
`segment`	Segment	Segment that loads terrain data.

Source: terrain/GlobusTerrain.ts, line 448

Returns:

URL string.

Type:: string

abortLoading()

Stop loading.

Source: terrain/GlobusTerrain.ts, line 322

handleSegmentTerrain(segment)

Loads or creates segment elevation data.

Parameters:

Name	Type	Description
`segment`	Segment	Segment to create elevation data.

Overrides: EmptyTerrain#handleSegmentTerrain
Source: terrain/EmptyTerrain.ts, line 213

loadTerrain(segment, forceLoadingopt)

Starts to load segment elevation data.

Parameters:

Name	Type	Attributes	Default	Description
`segment`	Segment			Segment that requests terrain data.
`forceLoading`	boolean	<optional>	false	Forces loading even if default filter would skip it.

Source: terrain/GlobusTerrain.ts, line 354

setName(name)

Sets provider name.

Parameters:

Name	Type	Description
`name`	string	Name.

Source: terrain/GlobusTerrain.ts, line 341

setUrl(url)

Sets terrain data url template.

Parameters:

Name	Type	Description
`url`	string	Url template.

Source: terrain/GlobusTerrain.ts, line 330

Example

<caption>Default openglobus url template:</caption>:
"https://{s}.srtm3.openglobus.org/{z}/{y}/{x}.ddm"

setUrlRewriteCallback(ur)

Sets url rewrite callback, used for custom url rewriting for every tile loading.

Parameters:

Name	Type	Description
`ur`	UrlRewriteFunc	The callback that returns tile custom created url.

Overrides: EmptyTerrain#setUrlRewriteCallback
Source: terrain/GlobusTerrain.ts, line 465