Ellipse

Ellipse is the ellipse geometry class of maptalks, inheriting from CenterMixin(Polygon). It is defined by a center point, a width, and a height, and is used to represent circular or elliptical areal features.

import { Ellipse } from "maptalks";
// Usage example
const ellipse = new Ellipse([0, 0], 1000, 600);

Constructor

new Ellipse(center, width, height, options?)

Parameters:

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

options

Config	Type	Description	Default
numberOfShellPoints	number	The number of shell sample points when generating the ellipse	81

Methods

• getWidth() — Gets the width of the ellipse.
• setWidth(width) — Sets the width of the ellipse.
• getHeight() — Gets the height of the ellipse.
• setHeight(height) — Sets the height of the ellipse.
• getShell() — Gets the outer ring of the ellipse.
• getHoles() — Gets the inner rings of the ellipse.
• animateShow() — Shows the ellipse with an animation.

Static Methods

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

Events

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