Leaflet-Semicircle.

Allows drawing semicircles on leaflet maps.

It's an extension of Leaflet's L.Circle, and behaves like L.Circle if the a semicircle of almost 360 degrees is displayed.

Updated for use with leaflet 1.1.0.

Provided classes:

Provided methods:

Usage:

The plugin provides two ways to only display a part of the circle:

1. Use the options map and set startAngle and stopAngle.
2. Use the options the option innerRadius or ringWidth to draw a ring instead of a circle.
3. Use setDirection(direction, size) to display a semicircle of size degrees at direction.

Example:

Live demo

Using options.startAngle and options.stopAngle:

L.semiCircle([51.5, -0.09], {
    radius: 500,
	startAngle: 45,
	stopAngle: 135
}).addTo(map);

Draw the same semicircle using setDirection(direction, size):

L.semiCircle([51.5, -0.09], {radius: 500})
	.setDirection(90, 90)
	.addTo(map);

Draw the same semicircle using as a ring:

L.semiCircle([51.5, -0.09], {
    radius: 500,
    innerRadius: 300,
    //// same as:
    // ringWidth: 200,
	startAngle: 45,
	stopAngle: 135
}).addTo(map);

Screenshot:

Live demo

Screenshot Using Rings

Live demo

Changelog

2.0.2 (2017-09-01)

• Fixed #24: instance check for canvas renderer

2.0.1 (2017-07-22)

• Fixed #14: Poleward displacement of circle center when radius is large.

2.0.0 (2017-07-09)

• Changed the API to stand-alone classes rather than overwriting L.Circle with an extension of itself.
• Added support for Leaflet 1.1.0