@allmaps/types

Allmaps TypeScript types

Geometry types

The following Geometries are used by default Allmaps packages.

type Point = [number, number]

type LineString = Point[]

type Polygon = Point[][]
// A Polygon is an array of rings of at least three points
// Rings are not closed: the first point is not repeated at the end.
// There is no requirement on winding order.

type MultiPoint = Point[]
// Notice that this is equivalent to the LineString type, hence the `isMultiGeometry` option

type MultiLineString = Point[][]
// Notice that this is equivalent to the Polygon type, hence the `isMultiGeometry` option

type MultiPolygon = Point[][][]

type Geometry =
  | Point
  | LineString
  | Polygon
  | MultiPoint
  | MultiLineString
  | MultiPolygon

To interact with external data, the following types are used as well:

GeoJSON Geometries follow the GeoJSON specification.

SVG Geometries are expressed using the following types (but note that some functions allow svg's to be passed as a string):

export type SvgCircle = {
  type: 'circle'
  attributes?: SvgAttributes
  coordinates: Point
}

export type SvgLine = {
  type: 'line'
  attributes?: SvgAttributes
  coordinates: [Point, Point]
}

export type SvgPolyLine = {
  type: 'polyline'
  attributes?: SvgAttributes
  coordinates: Point[]
}

export type SvgPolygon = {
  type: 'polygon'
  attributes?: SvgAttributes
  coordinates: Point[]
}

export type SvgRect = {
  type: 'rect'
  attributes?: SvgAttributes
  coordinates: Point[]
}

export type SvgGeometry =
  | SvgCircle
  | SvgLine
  | SvgPolyLine
  | SvgPolygon
  | SvgRect

API

Bbox

Bbox ([number, number, number, number]). Defined as [xMin, yMin, xMax, yMax]

Color

Type

[number, number, number]

ColorCount

Fields

• color ([number, number, number])
• count (number)

ColorWithTransparancy

Type

[number, number, number, number]

FetchFn

Type

(
  input: Request | string | URL,
  init?: RequestInit
) => Promise<Response>

Fit

Ways two rectangles (or shapes in general) can overlap: ('contain' | 'cover' | 'equal').

• 'contain': The first contains the second
• 'cover': The first is covered by the second
• 'equal': The first and second have equal size

Gcp

Fields

• geo ([number, number])
• resource ([number, number])

GeojsonFeature

Fields

• geometry ( | GeojsonLineString | GeojsonMultiLineString | GeojsonMultiPoint | GeojsonMultiPolygon | GeojsonPoint | GeojsonPolygon)
• properties (unknown)
• type ('Feature')

GeojsonFeatureCollection

Fields

• features (Array<GeojsonFeature>)
• type ('FeatureCollection')

GeojsonGeometry

Type

  | GeojsonLineString
  | GeojsonMultiLineString
  | GeojsonMultiPoint
  | GeojsonMultiPolygon
  | GeojsonPoint
  | GeojsonPolygon

GeojsonGeometryType

Type

  | 'LineString'
  | 'MultiLineString'
  | 'MultiPoint'
  | 'MultiPolygon'
  | 'Point'
  | 'Polygon'

GeojsonLineString

Fields

• coordinates (Array<Array<number>>)
• type ('LineString')

GeojsonMultiGeometry

Type

GeojsonMultiLineString | GeojsonMultiPoint | GeojsonMultiPolygon

GeojsonMultiLineString

Fields

• coordinates (Array<Array<Array<number>>>)
• type ('MultiLineString')

GeojsonMultiPoint

Fields

• coordinates (Array<Array<number>>)
• type ('MultiPoint')

GeojsonMultiPolygon

Fields

• coordinates (Array<Array<Array<Array<number>>>>)
• type ('MultiPolygon')

GeojsonPoint

Fields

• coordinates (Array<number>)
• type ('Point')

GeojsonPolygon

Fields

• coordinates (Array<Array<Array<number>>>)
• type ('Polygon')

Geometry

Type

  LineString | MultiLineString | MultiPoint | MultiPolygon | Point | Polygon

Histogram

Fields

• [bin: string] ({count: number; color: Color})

HomogeneousTransform

Weights array of a 2D Homogeneous Transform Matrix

These coefficients are used in the same order in multiple places

• CSS Transform defined by a 2D matrix. Use toString() before using this as input for a CSS matrix() function.
• WebGL 2D transform matrices.
• OpenLayers' transform class.

See: https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/matrix See: https://openlayers.org/en/latest/apidoc/module-ol_transform.html

Note: The weights array of a Polynomial1 Transformation has a different order. See the corresponding conversion functions.

Type

[number, number, number, number, number, number]

ImageRequest

Fields

• region? ({x: number; y: number; width: number; height: number})
• size? ({width: number; height: number})

Line

Type

[Point, Point]

LineString

Type

Array<Point>

Matrix4

Type

[
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number,
  number
]

MultiGeometryOptions

Fields

• isMultiGeometry (boolean)

MultiLineString

Type

Array<Array<Point>>

MultiPoint

Type

Array<Point>

MultiPolygon

Type

Array<Array<Array<Point>>>

Point

Type

[number, number]

Polygon

Type

Array<Array<Point>>

Rectangle

Rectangle (or possibly quadrilateral) ([Point, Point, Point, Point]). Winding order of points is free.

Region

Fields

• height (number)
• width (number)
• x (number)
• y (number)

Ring

Ring as [[number, number], ...] (Array<Point>).

Must contain at least 3 points May not contain duplicate points Must be unclosed: last element is not a repetition of the first May not be self-intersecting So far no requirement on self-intersection although that may be useful in future So far no requirement on winding order. This is only applied when exporting to GeoJSON

Size

Two numbers indicating the size of a Bbox as [width, height] or [xSize, ySize] ([number, number]). Alternatively, two numbers indicating the minimum and maximum of, for example, an array of numbers Alternatively, two numbers indicating the dimensions of a matrix: rows, cols (which is a different handedness!)

SizeObject

Fields

• height (number)
• width (number)

SvgAttributes

Type

{[x: string]: string | number}

SvgCircle

Fields

• attributes? ({[x: string]: string | number})
• coordinates ([number, number])
• type ('circle')

SvgGeometry

Type

SvgCircle | SvgLine | SvgPolyLine | SvgPolygon | SvgRect

SvgLine

Fields

• attributes? ({[x: string]: string | number})
• coordinates ([Point, Point])
• type ('line')

SvgPolyLine

Fields

• attributes? ({[x: string]: string | number})
• coordinates (Array<Point>)
• type ('polyline')

SvgPolygon

Fields

• attributes? ({[x: string]: string | number})
• coordinates (Array<Point>)
• type ('polygon')

SvgRect

Fields

• attributes? ({[x: string]: string | number})
• coordinates (Array<Point>)
• type ('rect')

Tile

Fields

• column (number)
• imageSize ([number, number])
• row (number)
• tileZoomLevel ({ scaleFactor: number width: number height: number originalWidth: number originalHeight: number columns: number rows: number })

TileByColumn

Fields

• [key: number] ([number, number])

TileZoomLevel

Fields

• columns (number)
• height (number)
• originalHeight (number)
• originalWidth (number)
• rows (number)
• scaleFactor (number)
• width (number)

Triangle

Triangle As [[x0, y0], [x1, y1], [x2, y2]] ([Point, Point, Point]).

Winding order of points is free.

TypedGeometry

Type

P | TypedLineString<P> | TypedMultiLineString<P> | TypedMultiPoint<P> | TypedMultiPolygon<P> | TypedPolygon<...>

TypedLine

Type

[P, P]

TypedLineString

Type

Array<P>

TypedMultiLineString

Type

Array<Array<P>>

TypedMultiPoint

Type

Array<P>

TypedMultiPolygon

Type

Array<Array<Array<P>>>

TypedPolygon

Type

Array<Array<P>>

TypedRectangle

Type

[P, P, P, P]

TypedRing

Type

Array<P>

TypedTriangle

Type

[P, P, P]