Package it.tidalwave.mapviewer.spi

Class MercatorProjection

java.lang.Object

it.tidalwave.mapviewer.spi.MercatorProjection

All Implemented Interfaces:

Projection

public class MercatorProjection
extends Object
implements Projection

An implementation of the Mercator Projection.

Author:

Fabrizio Giudici

Constructor Summary

Constructors

Constructor	Description
MercatorProjection()

Method Summary

Modifier and Type	Method	Description
MapPoint	coordinatesToMapPoint(MapCoordinates coordinates, double zoomLevel)	Returns a MapPoint converted from the given coordinates and zoom level.
MapCoordinates	mapPointToCoordinates(MapPoint mapPoint, double zoomLevel)	Returns MapCoordinates converted from the point coordinates and zoom level.
final double	metersPerPixel(MapCoordinates coordinates, double zoomLevel)	Returns the map scale (expressed in meters per pixel) at the given zoom level.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MercatorProjection

public MercatorProjection()

Method Details

coordinatesToMapPoint

@Nonnull
public MapPoint coordinatesToMapPoint(@Nonnull
 MapCoordinates coordinates,
 double zoomLevel)

Returns a MapPoint converted from the given coordinates and zoom level..

Specified by:

coordinatesToMapPoint in interface Projection

Parameters:

coordinates - the coordinates to convert

zoomLevel - the zoom level

Returns:

a MapPoint converted from the given coordinates and zoom level

mapPointToCoordinates

@Nonnull
public MapCoordinates mapPointToCoordinates(@Nonnull
 MapPoint mapPoint,
 double zoomLevel)

Returns MapCoordinates converted from the point coordinates and zoom level..

Specified by:

mapPointToCoordinates in interface Projection

Parameters:

mapPoint - the point

zoomLevel - the zoom level

Returns:

MapCoordinates converted from the point coordinates and zoom level

metersPerPixel

public final double metersPerPixel(@Nonnull
 MapCoordinates coordinates,
 double zoomLevel)

Returns the map scale (expressed in meters per pixel) at the given zoom level..

Specified by:

metersPerPixel in interface Projection

Parameters:

coordinates - coordinates

zoomLevel - the zoom level

Returns:

the map scale (expressed in meters per pixel) at the given zoom level