Module: ol/geom/Polygon

Classes

Polygon

Functions

circular(center, radius, n, sphereRadius){Polygon}

geom/Polygon.js, line 432

import {circular} from 'ol/geom/Polygon';

Create an approximation of a circle on the surface of a sphere.

Name	Type	Description
center	Coordinate	Center ([lon, lat] in degrees).
radius	number	The great-circle distance from the center to the polygon vertices in meters.
n	number | undefined	Optional number of vertices for the resulting polygon. Default is 32.
sphereRadius	number | undefined	Optional radius for the sphere (defaults to the Earth's mean radius using the WGS84 ellipsoid).

Returns:

The "circular" polygon.

fromCircle(circle, sides, angle){Polygon}

geom/Polygon.js, line 484

import {fromCircle} from 'ol/geom/Polygon';

Create a regular polygon from a circle.

Name	Type	Description
circle	Circle	Circle geometry.
sides	number | undefined	Number of sides of the polygon. Default is 32.
angle	number | undefined	Start angle for the first vertex of the polygon in counter-clockwise radians. 0 means East. Default is 0.

Returns:

Polygon geometry.

fromExtent(extent){Polygon}

geom/Polygon.js, line 452

import {fromExtent} from 'ol/geom/Polygon';

Create a polygon from an extent. The layout used is XY.

Name	Type	Description
extent	Extent	The extent.

Returns:

The polygon.