Circle

Circle is the circle geometry class of maptalks, inheriting from CenterMixin(Polygon). It is defined by a center point and a radius, used to represent circular areal features.

import { Circle } from "maptalks";
// Usage example
const marker = new Circle([0, 0], 1000);

Constructor

new Circle(center, radius, options?)

Parameters:

• center — The center point coordinates of the circle, e.g. [x, y].
• radius — The radius of the circle.
• options — (Optional) Configuration options, see the table below.

options

Config	Type	Description	Default
numberOfShellPoints	number	The number of shell sample points when generating the circle	60

Methods

• getRadius() — Gets the radius of the circle.
• setRadius(radius) — Sets the radius of the circle.
• getShell() — Gets the outer ring of the circle.
• getHoles() — Gets the inner rings of the circle.
• animateShow() — Shows the circle with an animation.

Static Methods

• fromJSON(json) — Creates a Circle from a JSON object.

Events

• shapechange — Fired when the shape of the circle changes.