Package ucar.unidata.geoloc.projection

Class Sinusoidal

java.lang.Object

ucar.unidata.geoloc.ProjectionImpl

ucar.unidata.geoloc.projection.Sinusoidal

All Implemented Interfaces:

Serializable, Projection

public class Sinusoidal
extends ProjectionImpl

Sinusoidal projection, spherical earth. See John Snyder, Map Projections used by the USGS, Bulletin 1532, 2nd edition (1983), p 243

Since:

Feb 24, 2013

See Also:

Serialized Form

Field Summary

Fields inherited from class ucar.unidata.geoloc.ProjectionImpl

atts, defaultMapArea, EARTH_RADIUS, INDEX_LAT, INDEX_LON, INDEX_X, INDEX_Y, isLatLon, name, PI, PI_OVER_2, PI_OVER_4, TOLERANCE

Constructor Summary

Constructors

Constructor	Description
Sinusoidal()	Constructor with default parameters
Sinusoidal(double centMeridian, double false_easting, double false_northing, double radius)	Construct a Sinusoidal Projection.

Method Summary

Modifier and Type	Method	Description
ProjectionImpl	constructCopy()	copy constructor - avoid clone !!
boolean	crossSeam(ProjectionPoint pt1, ProjectionPoint pt2)	Does the line between these two points cross the projection "seam".
boolean	equals(Object o)	Returns true if this represents the same Projection as proj.
double	getCentMeridian()	Get the central Meridian in degrees
double	getEarthRadius()
double	getFalseEasting()	Get the false easting, in km.
double	getFalseNorthing()	Get the false northing, in km.
List<ProjectionPoint>	getMapEdgeIntercepts(ProjectionRect projBB)	Returns the points at which projBB intersects the map edge.
List<ProjectionPoint>	getMapEdgeInterceptsAtX(double x0)	Returns the points at which the line x = x0 intersects the map edge.
List<ProjectionPoint>	getMapEdgeInterceptsAtY(double y0)	Returns the points at which the line y = y0 intersects the map edge.
int	hashCode()
ProjectionPoint	latLonToProj(LatLonPoint latLon, ProjectionPointImpl result)	Convert a LatLonPoint to projection coordinates
String	paramsToString()	Get the parameters as a String
LatLonPoint	projToLatLon(ProjectionPoint world, LatLonPointImpl result)	Convert projection coordinates to a LatLonPoint
LatLonRect	projToLatLonBB(ProjectionRect projBB)	Compute lat/lon bounding box from projection bounding box.
void	setCentMeridian(double centMeridian)	Deprecated.
void	setFalseEasting(double falseEasting)	Deprecated.
void	setFalseNorthing(double falseNorthing)	Deprecated.
String	toString()	Get a String representation of this projection.

Methods inherited from class ucar.unidata.geoloc.ProjectionImpl

addParameter, addParameter, addParameter, findProjectionParameter, getClassName, getDefaultMapArea, getDefaultMapAreaLL, getHeader, getName, getProjectionParameters, getProjectionTypeLabel, isLatLon, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProj, latLonToProjBB, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLon, projToLatLonBBold, setDefaultMapArea, setName

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ucar.unidata.geoloc.Projection

latLonToProj, projToLatLon

Constructor Detail

Sinusoidal

public Sinusoidal()

Constructor with default parameters

Sinusoidal

public Sinusoidal(double centMeridian,
                  double false_easting,
                  double false_northing,
                  double radius)

Construct a Sinusoidal Projection.

Parameters:

centMeridian - central Meridian (degrees)

false_easting - false_easting in km

false_northing - false_northing in km

radius - earth radius in km

Method Detail

constructCopy

public ProjectionImpl constructCopy()

Description copied from class: ProjectionImpl

copy constructor - avoid clone !!

Specified by:

constructCopy in class ProjectionImpl

Returns:

a copy of this Projection. TODO return Projection in ver6

getCentMeridian

public double getCentMeridian()

Get the central Meridian in degrees

Returns:

the central Meridian

getFalseEasting

public double getFalseEasting()

Get the false easting, in km.

Returns:

the false easting.

getFalseNorthing

public double getFalseNorthing()

Get the false northing, in km.

Returns:

the false northing.

getEarthRadius

public double getEarthRadius()

setCentMeridian

@Deprecated
public void setCentMeridian(double centMeridian)

Deprecated.

Set the central Meridian

Parameters:

centMeridian - central Meridian in degrees

setFalseEasting

@Deprecated
public void setFalseEasting(double falseEasting)

Deprecated.

Set the false_easting, in km. natural_x_coordinate + false_easting = x coordinate

Parameters:

falseEasting - x offset

setFalseNorthing

@Deprecated
public void setFalseNorthing(double falseNorthing)

Deprecated.

Set the false northing, in km. natural_y_coordinate + false_northing = y coordinate

Parameters:

falseNorthing - y offset

equals

public boolean equals(Object o)

Description copied from class: ProjectionImpl

Returns true if this represents the same Projection as proj.

Specified by:

equals in interface Projection

Specified by:

equals in class ProjectionImpl

Parameters:

o - projection in question

Returns:

true if this represents the same Projection as proj.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Description copied from class: ProjectionImpl

Get a String representation of this projection.

Overrides:

toString in class ProjectionImpl

Returns:

the name of the projection. This is what gets displayed when you add the projection object to a UI widget (e.g. label, combobox)

paramsToString

public String paramsToString()

Get the parameters as a String

Specified by:

paramsToString in interface Projection

Specified by:

paramsToString in class ProjectionImpl

Returns:

the parameters as a String

crossSeam

public boolean crossSeam(ProjectionPoint pt1,
                         ProjectionPoint pt2)

Does the line between these two points cross the projection "seam".

Specified by:

crossSeam in interface Projection

Specified by:

crossSeam in class ProjectionImpl

Parameters:

pt1 - the line goes between these two points

pt2 - the line goes between these two points

Returns:

false if there is no seam

latLonToProj

public ProjectionPoint latLonToProj(LatLonPoint latLon,
                                    ProjectionPointImpl result)

Convert a LatLonPoint to projection coordinates

Specified by:

latLonToProj in interface Projection

Specified by:

latLonToProj in class ProjectionImpl

Parameters:

latLon - convert from these lat, lon coordinates

result - the object to write to

Returns:

the given result

projToLatLon

public LatLonPoint projToLatLon(ProjectionPoint world,
                                LatLonPointImpl result)

Convert projection coordinates to a LatLonPoint

Specified by:

projToLatLon in interface Projection

Specified by:

projToLatLon in class ProjectionImpl

Parameters:

world - convert from these projection coordinates

result - the object to write to

Returns:

LatLonPoint the lat/lon coordinates

projToLatLonBB

public LatLonRect projToLatLonBB(ProjectionRect projBB)

Description copied from interface: Projection

Compute lat/lon bounding box from projection bounding box.

Specified by:

projToLatLonBB in interface Projection

Overrides:

projToLatLonBB in class ProjectionImpl

Parameters:

projBB - projection bounding box

Returns:

lat, lon bounding box.

getMapEdgeIntercepts

public List<ProjectionPoint> getMapEdgeIntercepts(ProjectionRect projBB)

Returns the points at which projBB intersects the map edge.

Parameters:

projBB - defines a bounding box that may intersect the map edge, in projection coordinates.

Returns:

the points at which projBB intersects the map edge. May be empty.

getMapEdgeInterceptsAtX

public List<ProjectionPoint> getMapEdgeInterceptsAtX(double x0)

Returns the points at which the line x = x0 intersects the map edge.

Parameters:

x0 - defines a line that may intersect the map edge, in projection coordinates.

Returns:

the points at which the line x = x0 intersects the map edge. May be empty.

getMapEdgeInterceptsAtY

public List<ProjectionPoint> getMapEdgeInterceptsAtY(double y0)

Returns the points at which the line y = y0 intersects the map edge.

Parameters:

y0 - defines a line that intersects the map edge, in projection coordinates.

Returns:

the points at which the line y = y0 intersects the map edge. May be empty.