ol-ext

Class: Overview

ol.control. Overview

new Overview( [options])

OpenLayers 3 Layer Overview Control. The overview can rotate with map. Zoom levels are configurable. Click on the overview will center the map. Change width/height of the overview trough css.

Parameters:
Name Type Argument Description
options Object <optional>

Control options.

Properties
Name Type Description
projection ol.ProjectionLike

The projection. Default is EPSG:3857 (Spherical Mercator).
minZoom Number

default 0
maxZoom Number

default 18
rotation boolean

enable rotation, default false
align top | bottom-left | right

position
layers Array.<ol.layer>

list of layers
style ol.style.Style | Array.<ol.style.Style> | undefined

style to draw the map extent on the overveiw
panAnimation bool | elastic

use animation to center map on click, default true

Extends

Methods

calcExtent_()

Calculate the extent of the map and draw it on the overview

getOverviewMap()

Get overview map

Returns:
Type
ol.Map

setMap(map)

Set the map instance the control associated with.

Parameters:
Name Type Description
map ol.Map

The map instance.

setPosition(align)

Set overview map position

Parameters:
Name Type Description
align top | bottom-left | right

toggleMap()

Toggle overview map

<inner> bounceFn(bounce, amplitude)

Elastic bounce

Parameters:
Name Type Description
bounce Int

number of bounce
amplitude Number

amplitude of the bounce [0,1]
Returns:
Type
Number

<inner> elasticFn(bounce, amplitude)

Elastic bounce

Parameters:
Name Type Description
bounce Int

number of bounce
amplitude Number

amplitude of the bounce [0,1]
Returns:
Type
Number