com.metsci.glimpse.util.geo.projection

Class MercatorProjection

java.lang.Object

com.metsci.glimpse.util.geo.projection.MercatorProjection

All Implemented Interfaces:

GeoProjection, Serializable

public class MercatorProjection
extends Object
implements GeoProjection, Serializable

Mercator cylindrical map projection.

Author:

ulman

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MercatorProjection()
MercatorProjection(double originLongitudeDeg)

Method Summary

Modifier and Type	Method and Description
Vector2d	project(LatLonGeo latLon) Convert LatLon to (nearly) equivalent projected x,y position.
Vector2d	reprojectFrom(double x, double y, GeoProjection fromProjection) Reproject an x,y position from a previous projection to this projection.
KinematicVector2d	reprojectPosVelFrom(double x, double y, double vx, double vy, GeoProjection fromProjection) Reproject x, y position and corresponding x, y velocity vector at that location from a previous projection to this projection.
LatLonGeo	unproject(double x, double y) Convert projected x,y position back to (nearly) equivalent LatLon.

Methods inherited from class java.lang.Object

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

Constructor Detail

MercatorProjection

public MercatorProjection(double originLongitudeDeg)

MercatorProjection

public MercatorProjection()

Method Detail

project

public Vector2d project(LatLonGeo latLon)

Description copied from interface: GeoProjection

Convert LatLon to (nearly) equivalent projected x,y position.

Specified by:

project in interface GeoProjection

Returns:

projected x, y

unproject

public LatLonGeo unproject(double x,
                           double y)

Description copied from interface: GeoProjection

Convert projected x,y position back to (nearly) equivalent LatLon.

Specified by:

unproject in interface GeoProjection

Parameters:

x - projected x position

y - projected y position

Returns:

latLon

reprojectFrom

public Vector2d reprojectFrom(double x,
                              double y,
                              GeoProjection fromProjection)

Description copied from interface: GeoProjection

Reproject an x,y position from a previous projection to this projection.

This is equivalent to unprojecting the x,y position from the old projection and then projecting it to this projection, but in a single step, which may be performed more efficiently.

Specified by:

reprojectFrom in interface GeoProjection

Parameters:

x - previously projected x position

y - previously projected y position

fromProjection - previous projection

Returns:

projected position

reprojectPosVelFrom

public KinematicVector2d reprojectPosVelFrom(double x,
                                             double y,
                                             double vx,
                                             double vy,
                                             GeoProjection fromProjection)

Description copied from interface: GeoProjection

Reproject x, y position and corresponding x, y velocity vector at that location from a previous projection to this projection.

Specified by:

reprojectPosVelFrom in interface GeoProjection

Parameters:

x - previously projected x position

y - previously projected y position

vx - previous x velocity component in projection space

vy - previous y velocity component in projection space

fromProjection - previous projection

Returns:

projected position and velocity