Namespace: GeoData

GeoData

Contains functions for loading and querying map data.

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Members

(static) bbox

Bounding box, used to set bounds of quadtree.

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(static) nodes :Object.<number, OSMNode>

Contains OSMNodes in JSON format, indexed by ID.

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(static) nodesQuadtree

Contains the IDs of OSMWays contained in GeoData.ways in a quadtree, indexed by spatial location.

Example query:

// Retrieves nodes in quads intersecting a quad of width (0.001, 0.0008) at (long, lat).
var quad = {
   x: long,
   y: lat,
   width: 0.001,
   height:0.0008
};
var candidates = GeoData.footpathsQuadtree.retrieve(quad);​
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(static) ways :Object.<number, OSMWay>

Contains OSMWays in JSON format, indexed by ID.

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Methods

(static) addBuildings(json)

Takes OSM JSON as input, and adds buildings and nodes to GeoData.ways, GeoData.nodes, and GeoData.nodesQuadtree.

Call before addConstruction.

Parameters:
Name Type Description
json Object

The OSM JSON data in Object format to load.
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(static) addConstruction(json)

Takes GeoJSON as input and marks nodes in GeoData.nodes as untraversable if they overlap.

Parameters:
Name Type Description
json *
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(static) addFootpaths(json)

Takes OSM JSON as input, and adds footpaths and nodes to GeoData.ways, GeoData.nodes, and GeoData.nodesQuadtree.

Call before addConstruction.

Parameters:
Name Type Description
json Object

The OSM JSON data in Object format to load.
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(static) getFootpaths() → {Object.<number, OSMWay>}

Gets a dictionary of OSMWays in OSM JSON format.

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Returns:
Type
Object.<number, OSMWay>

(static) initFootpaths() → {void}

Clears GeoData.ways, GeoData.nodes, and GeoData.nodesQuadtree.

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Returns:
Type
void

(static) nearestFootpath(point) → {Object|undefined}

Parameters:
Name Type Description
point Array.<number>

Long/lat coordinates in array form.
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Returns:

A quad from the nodes quadtree, or undefined if not found. See GeoData.nodesQuadtree for object layout.

Type
Object | undefined