globe.gl

Globe.GL ======== [![NPM package][npm-img]][npm-url] [![Build Size][build-size-img]][build-size-url] [![Dependencies][dependencies-img]][dependencies-url] [![jsdelivr][jsdelivr-img]][jsdelivr-url] <a href="//vasturiano.github.io/globe.gl/example/world-population/"><img width="48%" src="https://vasturiano.github.io/globe.gl/example/world-population/preview.png"></a> <a href="//vasturiano.github.io/globe.gl/example/airline-routes/us-international-outbound.html"><img width="48%" src="https://vasturiano.github.io/globe.gl/example/airline-routes/preview.png"></a> <a href="//vasturiano.github.io/globe.gl/example/countries-population/"><img width="48%" src="https://vasturiano.github.io/globe.gl/example/countries-population/preview.png"></a> <a href="//vasturiano.github.io/globe.gl/example/submarine-cables/"><img width="48%" src="https://vasturiano.github.io/globe.gl/example/submarine-cables/preview.png"></a> A web component to represent data visualization layers on a 3-dimensional globe in a spherical projection. This library is a convenience wrapper around the [three-globe](https://github.com/vasturiano/three-globe) plugin, and uses [ThreeJS](https://github.com/mrdoob/three.js/)/WebGL for 3D rendering. Check out the examples: * [Basic](https://vasturiano.github.io/globe.gl/example/basic/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/basic/index.html)) * [Arc Links](https://vasturiano.github.io/globe.gl/example/random-arcs/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/random-arcs/index.html)) * [Highlight links](https://vasturiano.github.io/globe.gl/example/airline-routes/highlight-links.html) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/airline-routes/highlight-links.html)) * [Choropleth](https://vasturiano.github.io/globe.gl/example/choropleth-countries/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/choropleth-countries/index.html)) * [Elevated Polygons](https://vasturiano.github.io/globe.gl/example/countries-population/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/countries-population/index.html)) * [Path Lines](https://vasturiano.github.io/globe.gl/example/random-paths/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/random-paths/index.html)) * [Map Labels](https://vasturiano.github.io/globe.gl/example/world-cities/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/world-cities/index.html)) * [Hexed Country Polygons](https://vasturiano.github.io/globe.gl/example/hexed-polygons/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/hexed-polygons/index.html)) * [Custom Globe Styling](https://vasturiano.github.io/globe.gl/example/custom-globe-styling/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/custom-globe-styling/index.html)) * [Custom Layer](https://vasturiano.github.io/globe.gl/example/custom-layer/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/custom-layer/index.html)) * [World Population](https://vasturiano.github.io/globe.gl/example/world-population/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/world-population/index.html)) * [Recent Earthquakes](https://vasturiano.github.io/globe.gl/example/earthquakes/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/earthquakes/index.html)) * [World Volcanoes](https://vasturiano.github.io/globe.gl/example/volcanoes/) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/volcanoes/index.html)) * [US outbound international airline routes](https://vasturiano.github.io/globe.gl/example/airline-routes/us-international-outbound.html) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/airline-routes/us-international-outbound.html)) * [Submarine Cables](https://vasturiano.github.io/globe.gl/example/submarine-cables/index.html) ([source](https://github.com/vasturiano/globe.gl/blob/master/example/submarine-cables/index.html)) See also the [AR version](https://github.com/vasturiano/globe-ar). And check out the [React bindings](https://github.com/vasturiano/react-globe.gl). ## Quick start ``` import Globe from 'globe.gl'; ``` or ``` const Globe = require('globe.gl'); ``` or even ``` <script src="//unpkg.com/globe.gl"></script> ``` then ``` const myGlobe = Globe(); myGlobe(<myDOMElement>) .globeImageUrl(<imageUrl>) .pointsData(<myData>); ``` ## API reference ### Initialisation ``` Globe({ configOptions })(<domElement>) ``` | Config options | Description | Default | | --- | --- | :--: | | rendererConfig: object | Configuration parameters to pass to the [ThreeJS WebGLRenderer](https://threejs.org/docs/#api/en/renderers/WebGLRenderer) constructor. | `{ antialias: true, alpha: true }` | | waitForGlobeReady: boolean | Whether to wait until the globe wrapping or background image has been fully loaded before rendering the globe or any of the data layers. | `true` | | animateIn: boolean | Whether to animate the globe initialization, by scaling and rotating the globe into its inital position. | `true` | ### Container layout | Method | Description | Default | | --- | --- | :--: | | width([px]) | Getter/setter for the canvas width. | *<window width>* | | height([px]) | Getter/setter for the canvas height. | *<window height>* | | backgroundColor([str]) | Getter/setter for the background color. | `#000011` | | backgroundImageUrl([url]) | Getter/setter for the URL of the image to be used as background to the globe. If no image is provided, the background color is shown instead. | `null` | ### Globe Layer | Method | Description | Default | | --- | --- | :--: | | globeImageUrl([url]) | Getter/setter for the URL of the image used in the material that wraps the globe. If no image is provided, the globe is represented as a black sphere. | `null` | | bumpImageUrl([url]) | Getter/setter for the URL of the image used to create a [bump map](https://threejs.org/docs/#api/en/materials/MeshStandardMaterial.bumpMap) in the material, to represent the globe's terrain. | `null` | | showAtmosphere([boolean]) | Getter/setter for whether to show a bright halo surrounding the globe, representing the atmosphere. | `true` | | showGraticules([boolean]) | Getter/setter for whether to show a graticule grid demarking latitude and longitude lines at every 10 degrees. | `false` | | globeMaterial() | Access the internal ThreeJS [MeshPhongMaterial](https://threejs.org/docs/#api/en/materials/MeshPhongMaterial) used to wrap the globe. Can be used for more advanced styling of the globe, by extending the material with various properties, like in [this example](https://github.com/vasturiano/globe.gl/blob/master/example/custom-globe-styling/index.html). | - | ### Points Layer <a href="//vasturiano.github.io/globe.gl/example/basic/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/basic/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | pointsData([array]) | Getter/setter for the list of points to represent in the points map layer. Each point is displayed as a cylindrical 3D object rising perpendicularly from the surface of the globe. | `[]` | | pointLabel([str or fn]) | Point object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | pointLat([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the cylinder's center latitude coordinate. | `lat` | | pointLng([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the cylinder's center longitude coordinate. | `lng` | | pointColor([str or fn]) | Point object accessor function or attribute for the cylinder color. | `() => '#ffffaa'` | | pointAltitude([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the cylinder's altitude in terms of globe radius units (`0` = 0 altitude (flat circle), `1` = globe radius). | 0.1 | | pointRadius([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the cylinder's radius, in angular degrees. | 0.25 | | pointResolution([num]) | Getter/setter for the radial geometric resolution of each cylinder, expressed in how many slice segments to divide the circumference. Higher values yield smoother cylinders. | 12 | | pointsMerge([boolean]) | Getter/setter for whether to merge all the point meshes into a single ThreeJS object, for improved rendering performance. Visually both options are equivalent, setting this option only affects the internal organization of the ThreeJS objects. | `false` | | pointsTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate point changes involving geometry modifications. A value of `0` will move the objects immediately to their final position. New objects are animated by scaling them from the ground up. Only works if `pointsMerge` is disabled. | 1000 | | onPointClick(fn) | Callback function for point (left-button) clicks. The point object is included as single argument: `onPointClick(point)`. Only works if `pointsMerge` is disabled. | - | | onPointRightClick(fn) | Callback function for point right-clicks. The point object is included as single argument: `onPointRightClick(point)`. Only works if `pointsMerge` is disabled. | - | | onPointHover(fn) | Callback function for point mouse over events. The point object (or `null` if there's no point under the mouse line of sight) is included as the first argument, and the previous point object (or `null`) as second argument: `onPointHover(point, prevPoint)`. Only works if `pointsMerge` is disabled. | - | ### Arcs Layer <a href="//vasturiano.github.io/globe.gl/example/random-arcs/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/random-arcs/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | arcsData([array]) | Getter/setter for the list of links to represent in the arcs map layer. Each link is displayed as an arc line that rises from the surface of the globe, connecting the start and end coordinates. | `[]` | | arcLabel([str or fn]) | Arc object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | arcStartLat([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the line's start latitude coordinate. | `startLat` | | arcStartLng([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the line's start longitude coordinate. | `startLng` | | arcEndLat([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the line's end latitude coordinate. | `endLat` | | arcEndLng([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the line's end longitude coordinate. | `endLng` | | arcColor([str, [str, ...] or fn]) | Arc object accessor function or attribute for the line's color. Also supports color gradients by passing an array of colors. | `() => '#ffffaa'` | | arcAltitude([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the arc's maximum altitude (ocurring at the half-way distance between the two points) in terms of globe radius units (`0` = 0 altitude (ground line), `1` = globe radius). If a value of `null` or `undefined` is used, the altitude is automatically set proportionally to the distance between the two points, according to the scale set in `arcAltitudeAutoScale`. | `null` | | arcAltitudeAutoScale([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the scale of the arc's automatic altitude, in terms of units of the great-arc distance between the two points. A value of `1` indicates the arc should be as high as its length on the ground. Only applicable if `arcAltitude` is not set. | 0.5 | | arcStroke([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the line's diameter, in angular degrees. A value of `null` or `undefined` will render a [ThreeJS Line](https://threejs.org/docs/#api/objects/Line) whose width is constant (`1px`) regardless of the camera distance. Otherwise, a [TubeGeometry](https://threejs.org/docs/#api/en/geometries/TubeGeometry) is used. | `null` | | arcCurveResolution([num]) | Getter/setter for the arc's curve resolution, expressed in how many straight line segments to divide the curve by. Higher values yield smoother curves. | 64 | | arcCircularResolution([num]) | Getter/setter for the radial geometric resolution of each line, expressed in how many slice segments to divide the tube's circumference. Only applicable when using Tube geometries (defined `arcStroke`). | 6 | | arcDashLength([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the length of the dashed segments in the arc, in terms of relative length of the whole line (`1` = full line length). | 1 | | arcDashGap([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the length of the gap between dash segments, in terms of relative line length. | 0 | | arcDashInitialGap([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the length of the initial gap before the first dash segment, in terms of relative line length. | 0 | | arcDashAnimateTime([num, str or fn]) | Arc object accessor function, attribute or a numeric constant for the time duration (in `ms`) to animate the motion of dash positions from the start to the end point for a full line length. A value of `0` disables the animation. | 0 | | arcsTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate arc changes involving geometry modifications. A value of `0` will move the arcs immediately to their final position. New arcs are animated by rising them from the ground up. | 1000 | | onArcClick(fn) | Callback function for arc (left-button) clicks. The arc object is included as single argument: `onArcClick(arc)`. | - | | onArcRightClick(fn) | Callback function for arc right-clicks. The arc object is included as single argument: `onArcRightClick(arc)`. | - | | onArcHover(fn) | Callback function for arc mouse over events. The arc object (or `null` if there's no arc under the mouse line of sight) is included as the first argument, and the previous arc object (or `null`) as second argument: `onArcHover(arc, prevArc)`. | - | ### Polygons Layer <a href="//vasturiano.github.io/globe.gl/example/choropleth-countries/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/choropleth-countries/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | polygonsData([array]) | Getter/setter for the list of polygon shapes to represent in the polygons map layer. Each polygon is displayed as a shaped cone that extrudes from the surface of the globe. | `[]` | | polygonLabel([str or fn]) | Polygon object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | polygonGeoJsonGeometry([str or fn]) | Polygon object accessor function or attribute for the GeoJson geometry specification of the polygon's shape. The returned value should have a minimum of two fields: `type` and `coordinates`. Only GeoJson geometries of type `Polygon` or `MultiPolygon` are supported, other types will be skipped. | `geometry` | | polygonCapColor([str or fn]) | Polygon object accessor function or attribute for the color of the top surface. | `() => '#ffffaa'` | | polygonSideColor([str or fn]) | Polygon object accessor function or attribute for the color of the cone sides. | `() => '#ffffaa'` | | polygonStrokeColor([str or fn]) | Polygon object accessor function or attribute for the color to stroke the polygon perimeter. A falsy value will disable the stroking. | - | | polygonAltitude([num, str or fn]) | Polygon object accessor function, attribute or a numeric constant for the polygon cone's altitude in terms of globe radius units (`0` = 0 altitude (flat polygon), `1` = globe radius). | 0.1 | | polygonsTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate polygon altitude changes. A value of `0` will size the cone immediately to their final altitude. New polygons are animated by rising them from the ground up. | 1000 | | onPolygonClick(fn) | Callback function for polygon (left-button) clicks. The polygon object is included as single argument: `onPolygonClick(polygon)`. | - | | onPolygonRightClick(fn) | Callback function for polygon right-clicks. The polygon object is included as single argument: `onPolygonRightClick(polygon)`. | - | | onPolygonHover(fn) | Callback function for polygon mouse over events. The polygon object (or `null` if there's no polygon under the mouse line of sight) is included as the first argument, and the previous polygon object (or `null`) as second argument: `onPolygonHover(polygon, prevPolygon)`. | - | ### Paths Layer <a href="//vasturiano.github.io/globe.gl/example/random-paths/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/random-paths/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | pathsData([array]) | Getter/setter for the list of lines to represent in the paths map layer. Each path is displayed as a line that connects all the coordinate pairs in the path array. | `[]` | | pathLabel([str or fn]) | Path object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | pathPoints([array, str or fn]) | Path object accessor function, attribute or an array for the set of points that define the path line. By default, each path point is assumed to be a 2-position array (`[<lat>, <lon>]`). This default behavior can be modified using the `pathPointLat` and `pathPointLng` methods. | `pnts => pnts` | | pathPointLat([num, str or fn]) | Path point object accessor function, attribute or a numeric constant for the latitude coordinate. | `arr => arr[0]` | | pathPointLng([num, str or fn]) | Path point object accessor function, attribute or a numeric constant for the longitude coordinate. | `arr => arr[1]` | | pathPointAlt([num, str or fn]) | Path point object accessor function, attribute or a numeric constant for the point altitude, in terms of globe radius units (`0` = 0 altitude (ground), `1` = globe radius). | 0.001 | | pathResolution([num]) | Getter/setter for the path's angular resolution, in lat/lng degrees. If the ground distance (excluding altitude) between two adjacent path points is larger than this value, the line segment will be interpolated in order to approximate the curvature of the sphere surface. Lower values yield more perfectly curved lines, at the cost of performance. | 2 | | pathColor([str, [str, ...] or fn]) | Path object accessor function or attribute for the line's color. Also supports color gradients by passing an array of colors. Transparent colors are not supported in Fat Lines with set width. | `() => '#ffffaa'` | | pathStroke([num, str or fn]) | Path object accessor function, attribute or a numeric constant for the line's diameter, in angular degrees. A value of `null` or `undefined` will render a [ThreeJS Line](https://threejs.org/docs/#api/objects/Line) whose width is constant (`1px`) regardless of the camera distance. Otherwise, a [FatLine](https://github.com/vasturiano/three-fatline) is used. | `null` | | pathDashLength([num, str or fn]) | Path object accessor function, attribute or a numeric constant for the length of the dashed segments in the path line, in terms of relative length of the whole line (`1` = full line length). | 1 | | pathDashGap([num, str or fn]) | Path object accessor function, attribute or a numeric constant for the length of the gap between dash segments, in terms of relative line length. | 0 | | pathDashInitialGap([num, str or fn]) | Path object accessor function, attribute or a numeric constant for the length of the initial gap before the first dash segment, in terms of relative line length. Not supported in Fat Lines with set width. | 0 | | pathDashAnimateTime([num, str or fn]) | Path object accessor function, attribute or a numeric constant for the time duration (in `ms`) to animate the motion of dash positions from the start to the end point for a full line length. A value of `0` disables the animation. Not supported in Fat Lines with set width. | 0 | | pathTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate path changes. A value of `0` will move the paths immediately to their final position. New paths are animated from start to end. | 1000 | | onPathClick(fn) | Callback function for path (left-button) clicks. The path object is included as single argument: `onPathClick(arc)`. | - | | onPathRightClick(fn) | Callback function for path right-clicks. The path object is included as single argument: `onPathRightClick(arc)`. | - | | onPathHover(fn) | Callback function for path mouse over events. The path object (or `null` if there's no path under the mouse line of sight) is included as the first argument, and the previous path object (or `null`) as second argument: `onPathHover(path, prevPath)`. | - | ### Hex Bin Layer <a href="//vasturiano.github.io/globe.gl/example/earthquakes/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/earthquakes/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | hexBinPointsData([array]) | Getter/setter for the list of points to aggregate using the hex bin map layer. Each point is added to an hexagonal prism 3D object that represents all the points within a tesselated portion of the space. | `[]` | | hexLabel([str or fn]) | Hex object accessor function or attribute for label (shown as tooltip). An hex object includes all points binned, and has the syntax: `{ points, sumWeight, center: { lat, lng } }`. Supports plain text or HTML content. | - | | hexBinPointLat([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the latitude coordinate. | `lat` | | hexBinPointLng([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the longitude coordinate. | `lng` | | hexBinPointWeight([num, str or fn]) | Point object accessor function, attribute or a numeric constant for the weight of the point. Weights for points in the same bin are summed and determine the hexagon default altitude. | 1 | | hexBinResolution([num]) | The geographic binning resolution as defined by [H3](https://uber.github.io/h3/#/documentation/core-library/resolution-table). Determines the area of the hexagons that tesselate the globe's surface. Accepts values between `0` and `15`. Level 0 partitions the earth in 122 (mostly) hexagonal cells. Each subsequent level sub-divides the previous in roughly 7 hexagons. | 4 | | hexMargin([num or fn]) | The radial margin of each hexagon. Margins above `0` will create gaps between adjacent hexagons and serve only a visual purpose, as the data points within the margin still contribute to the hexagon's data. The margin is specified in terms of fraction of the hexagon's surface diameter. Values below `0` or above `1` are disadvised. This property also supports using an accessor method based on the hexagon's aggregated data, following the syntax: `hexMargin(({ points, sumWeight, center: { lat, lng }}) => ...)`. This method should return a numeric constant. | 0.2 | | hexTopColor([fn]) | Accessor method for each hexagon's top color. The method should follow the signature: `hexTopColor(({ points, sumWeight, center: { lat, lng }}) => ...)` and return a color string. | `() => '#ffffaa'` | | hexSideColor([fn]) | Accessor method for each hexagon's side color. The method should follow the signature: `hexSideColor(({ points, sumWeight, center: { lat, lng }}) => ...)` and return a color string. | `() => '#ffffaa'` | | hexBinMerge([boolean]) | Getter/setter for whether to merge all the hexagon meshes into a single ThreeJS object, for improved rendering performance. Visually both options are equivalent, setting this option only affects the internal organization of the ThreeJS objects. | `false` | | hexTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate hexagon changes related to geometry modifications (altitude, radius). A value of `0` will move the hexagons immediately to their final position. New hexagons are animated by scaling them from the ground up. Only works if `hexBinMerge` is disabled. | 1000 | | onHexClick(fn) | Callback function for hexagon (left-button) clicks. The hex object including all points binned is included as single argument: `onHexClick({ points, sumWeight, center: { lat, lng } })`. Only works if `hexBinMerge` is disabled. | - | | onHexRightClick(fn) | Callback function for hexagon right-clicks. The hex object including all points binned is included as single argument: `onHexRightClick({ points, sumWeight, center: { lat, lng } })`. Only works if `hexBinMerge` is disabled. | - | | onHexHover(fn) | Callback function for hexagon mouse over events. The hex object (or `null` if there's no hex under the mouse line of sight) is included as the first argument, and the previous hex object (or `null`) as second argument: `onHexHover(hex, prevHex)`. Each hex object includes all points binned, and has the syntax: `{ points, sumWeight, center: { lat, lng } }`. Only works if `hexBinMerge` is disabled. | - | ### Hexed Polygons Layer <a href="//vasturiano.github.io/globe.gl/example/hexed-polygons/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/hexed-polygons/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | hexPolygonsData([array]) | Getter/setter for the list of polygon shapes to represent in the hexed polygons map layer. Each polygon is displayed as a tesselated group of hexagons that approximate the polygons shape according to the resolution specified in `hexPolygonResolution`. | `[]` | | hexPolygonLabel([str or fn]) | Hexed polygon object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | hexPolygonGeoJsonGeometry([str or fn]) | Hexed polygon object accessor function or attribute for the GeoJson geometry specification of the polygon's shape. The returned value should have a minimum of two fields: `type` and `coordinates`. Only GeoJson geometries of type `Polygon` or `MultiPolygon` are supported, other types will be skipped. | `geometry` | | hexPolygonColor([str or fn]) | Hexed polygon object accessor function or attribute for the color of each hexagon in the polygon. | `() => '#ffffaa'` | | hexPolygonAltitude([num, str or fn]) | Hexed polygon object accessor function, attribute or a numeric constant for the polygon's hexagons altitude in terms of globe radius units (`0` = 0 altitude, `1` = globe radius). | 0.001 | | hexPolygonResolution([num, str or fn]) | Hexed polygon object accessor function, attribute or a numeric constant for the geographic binning resolution as defined by [H3](https://uber.github.io/h3/#/documentation/core-library/resolution-table). Determines the area of the hexagons that tesselate the globe's surface. Accepts values between `0` and `15`. Level 0 partitions the earth in 122 (mostly) hexagonal cells. Each subsequent level sub-divides the previous in roughly 7 hexagons. | 3 | | hexPolygonMargin([num, str or fn]) | Hexed polygon object accessor function, attribute or a numeric constant for the radial margin of each hexagon. Margins above `0` will create gaps between adjacent hexagons within a polygon. The margin is specified in terms of fraction of the hexagon's surface diameter. Values below `0` or above `1` are disadvised. | 0.2 | | hexPolygonsTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate hexed polygons altitude and margin changes. A value of `0` will move the hexagons immediately to their final state. New hexed polygons are animated by sizing each hexagon from `0` radius. | 0 | | onHexPolygonClick(fn) | Callback function for hexed polygon (left-button) clicks. The polygon object is included as single argument: `onHexPolygonClick(polygon)`. | - | | onHexPolygonRightClick(fn) | Callback function for hexed polygon right-clicks. The polygon object is included as single argument: `onHexPolygonRightClick(polygon)`. | - | | onHexPolygonHover(fn) | Callback function for hexed polygon mouse over events. The polygon object (or `null` if there's no polygon under the mouse line of sight) is included as the first argument, and the previous polygon object (or `null`) as second argument: `onHexPolygonHover(polygon, prevPolygon)`. | - | ### Labels Layer <a href="//vasturiano.github.io/globe.gl/example/world-cities/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/world-cities/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | labelsData([array]) | Getter/setter for the list of label objects to represent in the labels map layer. | `[]` | | labelLabel([str or fn]) | Label object accessor function or attribute for its own tooltip label. Supports plain text or HTML content. | - | | labelLat([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the latitude coordinate. | `lat` | | labelLng([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the longitude coordinate. | `lng` | | labelText([str or fn]) | Label object accessor function or attribute for the label text. | `text` | | labelColor([str or fn]) | Label object accessor function or attribute for the label color. | `() => 'lightgrey'` | | labelAltitude([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the label altitude in terms of globe radius units. | 0 | | labelSize([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the label text height, in angular degrees. | 0.5 | | labelTypeFace([typeface ]) | Getter/setter for the text font typeface JSON object. Supports any typeface font generated by [Facetype.js](http://gero3.github.io/facetype.js/). | [helvetiker regular](https://github.com/mrdoob/three.js/blob/dev/examples/fonts/helvetiker_regular.typeface.json) | | labelRotation([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the label rotation in degrees. The rotation is performed clockwise along the axis of its latitude parallel plane. | 0 | | labelResolution([num]) | Getter/setter for the text geometric resolution of each label, expressed in how many segments to use in the text curves. Higher values yield smoother labels. | 3 | | labelIncludeDot([bool, str or fn]) | Label object accessor function, attribute or a boolean constant for whether to include a dot marker next to the text indicating the exact `lat`, `lng` coordinates of the label. If enabled the text will be rendered offset from the dot. | `true` | | labelDotRadius([num, str or fn]) | Label object accessor function, attribute or a numeric constant for the radius of the dot marker, in angular degrees. | 0.1 | | labelDotOrientation([str or fn]) | Label object accessor function or attribute for the orientation of the label if the dot marker is present. Possible values are `right`, `top` and `bottom`. | `() => 'bottom'` | | labelsTransitionDuration([num]) | Getter/setter for duration (ms) of the transition to animate label changes involving position modifications (`lat`, `lng`, `altitude`, `rotation`). A value of `0` will move the labels immediately to their final position. New labels are animated by scaling their size. | 1000 | | onLabelClick(fn) | Callback function for label (left-button) clicks. The label object is included as single argument: `onlabelClick(label)`. | - | | onLabelRightClick(fn) | Callback function for label right-clicks. The label object is included as single argument: `onlabelRightClick(label)`. | - | | onLabelHover(fn) | Callback function for label mouse over events. The label object (or `null` if there's no label under the mouse line of sight) is included as the first argument, and the previous label object (or `null`) as second argument: `onlabelHover(label, prevlabel)`. | - | ### Custom Layer <a href="//vasturiano.github.io/globe.gl/example/custom-layer/"><img width="70%" src="https://vasturiano.github.io/globe.gl/example/custom-layer/preview.png"></a> | Method | Description | Default | | --- | --- | :--: | | customLayerData([array]) | Getter/setter for the list of items to represent in the custom map layer. Each item is rendered according to the `customThreeObject` method. | `[]` | | customLayerLabel([str or fn]) | Object accessor function or attribute for label (shown as tooltip). Supports plain text or HTML content. | `name` | | customThreeObject([Object3d, str or fn]) | Object accessor function or attribute for generating a custom 3d object to render as part of the custom map layer. Should return an instance of [ThreeJS Object3d](https://threejs.org/docs/index.html#api/core/Object3D). The callback method's signature includes the object's data as well as the globe radius: `customThreeObject((objData, globeRadius) => { ... })`. | `null` | | customThreeObjectUpdate([str or fn]) | Object accessor function or attribute for updating an existing custom 3d object with new data. This can be used for performance improvement on data updates as the objects don't need to be removed and recreated at each update. The callback method's signature includes the object to be update, its new data and the globe radius: `customThreeObjectUpdate((obj, objData, globeRadius) => { ... })`. | `null` | | onCustomLayerClick(fn) | Callback function for custom object (left-button) clicks. The custom object is included as single argument: `onCustomLayerClick(obj)`. | - | | onCustomLayerRightClick(fn) | Callback function for custom object right-clicks. The custom object is included as single argument: `onCustomLayerRightClick(obj)`. | - | | onCustomLayerHover(fn) | Callback function for custom object mouse over events. The custom object (or `null` if there's no object under the mouse line of sight) is included as the first argument, and the previous custom object (or `null`) as second argument: `onCustomLayerHover(obj, prevObj)`. | - | ### Render control | Method | Description | Default | | --- | --- | :--: | | pointOfView({ lat, lng, altitude }, [ms]) | Getter/setter for the camera position, in terms of geographical `lat`, `lng`, `altitude` coordinates. Each of the coordinates is optional, allowing for motion in just some direction. The 2nd optional argument defines the duration of the transition (in ms) to animate the camera motion. A value of 0 (default) moves the camera immediately to the final position. | By default the camera will aim at the cross between the equator and the prime meridian (`0,0` coordinates), at an altitude of `2.5` globe radii. | | pauseAnimation() | Pauses the rendering cycle of the component, effectively freezing the current view and cancelling all user interaction. This method can be used to save performance in circumstances when a static image is sufficient. | | | resumeAnimation() | Resumes the rendering cycle of the component, and re-enables the user interaction. This method can be used together with `pauseAnimation` for performance optimization purposes. | | | enablePointerInteraction([boolean]) | Getter/setter for whether to enable the mouse tracking events. This activates an internal tracker of the canvas mouse position and enables the functionality of object hover/click and tooltip labels, at the cost of performance. If you're looking for maximum gain in your globe performance it's recommended to switch off this property. | `true` | | onZoom(fn) | Callback function for point-of-view changes by zooming or rotating the globe using the orbit controls. The current point of view (with the syntax `{ lat, lng, altitude }`) is included as sole argument. | | | scene() | Access the internal ThreeJS [Scene](https://threejs.org/docs/#api/scenes/Scene). Can be used to extend the current scene with additional objects not related to globe.gl. | | | camera() | Access the internal ThreeJS [Camera](https://threejs.org/docs/#api/cameras/PerspectiveCamera). | | | renderer() | Access the internal ThreeJS [WebGL renderer](https://threejs.org/docs/#api/renderers/WebGLRenderer). || | controls() | Access the internal ThreeJS [orbit controls object](https://threejs.org/docs/#examples/controls/OrbitControls). || ### Utility | Method | Description | | --- | --- | | getCoords(lat, lng [,altitude]) | Utility method to translate spherical coordinates. Given a pair of latitude/longitude coordinates and optionally altitude (in terms of globe radius units), returns the equivalent `{x, y, z}` cartesian spatial coordinates. || | toGeoCoords({ x, y, z }) | Utility method to translate cartesian coordinates to the geographic domain. Given a set of 3D cartesian coordinates `{x, y, z}`, returns the equivalent `{lat, lng, altitude}` spherical coordinates. 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