Class GeoUtilitiesAbstract

Apply buffer to extent

Calculates distance along a path define by array of Coordinates

Converts a TypeFeatureStyle to an Open Layers Style object.

Format the coordinates for degrees - minutes - seconds (lat, long)

Create empty basemap tilelayer to use as initial basemap while we load basemap so the viewer will not fails if basemap is not avialable

Ensures a service URL includes standardized OGC parameters (SERVICE, REQUEST, VERSION), overriding any existing ones with the correct casing and values. The function normalizes query parameter keys, removes lowercase variants (service, request), and ensures the final URL contains correctly capitalized parameters with the specified values. If the VERSION parameter is missing, a default value is added.

Builds a complete DescribeFeatureType URL for a WFS service.

Builds a complete GetCapabilities URL for a specific OGC service.

Builds a complete GetFeature URL for a WMS/WFS service.

Builds a complete GetLegendGraphic URL for a WMS service.

Builds a complete GetStyles URL for a WMS service.

Removes specified query parameters from a URL, preserving all others. This method normalizes a URL by stripping out any query parameters whose keys match the ones provided in removeParams. It works even if the URL contains multiple ? or & characters (e.g., proxy-wrapped URLs).

Converts an esri geometry type string to a TypeStyleGeometry.

Converts an extent to a polygon

Returns the Geometry representation of a given geojson

Function for checking if two geometries have the same coordinates

Returns the WKT representation of a given geometry.

Gets the area of a given geometry

Extracts the base URL (origin + pathname) from a full URL string, removing any query parameters, hash fragments, or authentication data.

Default drawing style for GeoView

Fetch the json response from the ESRI map server to get REST endpoint metadata.

Returns the intersection of 2 extents.

Returns the union of 2 extents.

Generates legend layer icon metadata from a layer legend definition. This method extracts icon imagery and legend item details from the provided layerLegend, handling both vector and non-vector legends. Behavior:

• Vector legends:
  • Iterates through each geometry type in the legend definition.
  • Generates icon images from HTML canvas elements using toDataURL().
  • Supports both simple and categorized style configurations.
  • Builds an iconList of TypeLegendItem entries per geometry type.
  • Assigns:
    • iconImage as the primary icon (first legend item)
    • iconImageStacked as the secondary icon when multiple entries exist
• Non-vector legends:
  • Attempts to extract a canvas image directly from layerLegend.legend.
  • Falls back to 'no data' if no canvas is available. Notes:
• Duplicate legend labels within categorized styles are filtered out.
• Visibility defaults to true unless explicitly set to false.
• Returns undefined if layerLegend is null or undefined.

Extracts and normalizes legend items from a collection of legend layer icons. This method:

• Flattens all iconList entries from the provided legend layer items.
• Handles special layer types (imageStatic and GeoTIFF) by dynamically creating a legend item using the iconImage property. For imageStatic and GeoTIFF schema tags, if at least one icon is present, an additional legend item is created with:
• geometryType set to 'Point'
• name set to 'image'
• icon set from icons[0].iconImage
• isVisible set to true

Gets the length of a given geometry

Return the map server url from a layer service.

Gets meters per pixel for different projections

Return the root server url from a OGC layer service.

Gets the pointer position information from a Map Event and a specified projection.

Fetch the json response from the XML response of a WMS getCapabilities request.

Fetch the json response from the XML response of a WMS getCapabilities request.

Fetch the json response from the XML response of a WMS getCapabilities request.

Checks if a given extent is long/lat.

Checks whether a given value is a valid GeoJSON FeatureCollection object.

Check if a point is contained in an extent

type guard function that redefines a TypeLegend as a TypeVectorLegend if the type attribute of the verifyIfLegend parameter is valid. The type ascention applies only to the true block of the if clause.

Converts a polygon to an extent

Extracts the EPSG code from a GeoJSON object's CRS definition. Accepts either a GeoJSON object or a JSON string. If the GeoJSON contains a crs entry with a properties.name field in the form "urn:ogc:def:crs:EPSG::<code>", it is normalized to "EPSG:<code>".

Extracts the EPSG code from a GeoJSON object's CRS definition. Accepts either a GeoJSON object or a JSON string. If the GeoJSON contains a crs entry with a properties.name field in the form "urn:ogc:def:crs:EPSG::<code>", it is normalized to "EPSG:<code>".

Reads OpenLayers features from an Esri features object.

Reads OpenLayers features from a GeoJSON object.

Reads OpenLayers features from a KML object.

Reads OpenLayers features from an WFS features object.

Reads OpenLayers features from a WKBObject object.

Replaces or adds the BBOX parameter in a WMS GetMap URL.

Checks validity of lat long, LCC, or Web Mercator extent and updates values if invalid.

Validates lat long, LCC, or Web Mercator extent if it is defined.

Converts a WFS geometry type string to a TypeStyleGeometry.

Returns the Geometry representation of a given wkt.

Serializes an OpenLayers geometry into a GML3 string. This method uses the OpenLayers GML3 format to convert the provided Geometry object into a GML XML string, using the specified spatial reference system (srsName).