Class eniro.maps.MapTypeSrs

Extends eniro.maps.Srs.

Defined in: Srs.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	eniro.maps.MapTypeSrs(id, name) Specialisation of {eniro.maps.Srs} that can be used as type in eniro.maps.MapTypeId.

Method Summary
Method Attributes	Method Name and Description
	getResolution(srsZoom, coord) Returns the resolution (srs-unit per pixel) for the given (srs) zoom level and (optional) coordinate offset.
	getSrsZoom(Resolution, coord) Returns the (closest smaller) zoom level for the given resolution and coordinate.

Methods borrowed from class eniro.maps.Srs:: approxEquals, equals, getId, getName

Class Detail

eniro.maps.MapTypeSrs(id, name)

Specialisation of {eniro.maps.Srs} that can be used as type in eniro.maps.MapTypeId.

Parameters:
{string} id: The identifier of the spatial reference system such as 'EPSG:4326'
{string} name: Human readable name of this system such as 'WGS84'.

Method Detail

{number} getResolution(srsZoom, coord)

Returns the resolution (srs-unit per pixel) for the given (srs) zoom level and (optional) coordinate offset.

Parameters:
{number} srsZoom: Zoom level to get a resolution for.
{eniro.maps.Coordinate} coord Optional: Position to get zoom for, since this can differ depending on location/projection. If not provided, the map center is used.

Returns:: {number} The resolution in srs-unit per pixel for the given srsZoom/location.

{number} getSrsZoom(Resolution, coord)

Returns the (closest smaller) zoom level for the given resolution and coordinate.

Parameters:
{number} Resolution: in srs-unit per pixel.
{eniro.maps.Coordinate} coord Optional: Position to get zoom for, since this can differ depending on location/projection. If not provided, the map center is used.

Returns:: {number} The zoom level that closest matches the given resolution for the give coordinate. If rounded this is rounded floor, i.e. 7.5 is rounded to 7.

Classes