Package org.locationtech.proj4j.proj
Class Eckert4Projection
- java.lang.Object
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- org.locationtech.proj4j.proj.Projection
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- org.locationtech.proj4j.proj.Eckert4Projection
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
public class Eckert4Projection extends Projection
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description private static double
C_p
private static double
C_x
private static double
C_y
private static double
EPS
private int
NITER
private static double
RC_p
private static double
RC_y
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Fields inherited from class org.locationtech.proj4j.proj.Projection
a, alpha, DTR, e, ellipsoid, EPS10, es, falseEasting, falseNorthing, fromMetres, geocentric, lonc, maxLatitude, maxLongitude, minLatitude, minLongitude, name, one_es, projectionLatitude, projectionLatitude1, projectionLatitude2, projectionLongitude, rone_es, RTD, scaleFactor, spherical, totalScale, trueScaleLatitude, unit
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Constructor Summary
Constructors Constructor Description Eckert4Projection()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
hasInverse()
Tests whether this projection has an inverse.boolean
isEqualArea()
Tests whether this projection is equal-area An equal-area projection preserves relative sizes of projected areas.ProjCoordinate
project(double lplam, double lpphi, ProjCoordinate out)
Computes the projection of a given point (i.e.ProjCoordinate
projectInverse(double xyx, double xyy, ProjCoordinate out)
Computes the inverse projection of a given point (i.e.java.lang.String
toString()
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Methods inherited from class org.locationtech.proj4j.proj.Projection
clone, equals, getAlpha, getAxisOrder, getEllipsoid, getEPSGCode, getEquatorRadius, getFalseEasting, getFalseNorthing, getFromMetres, getHeightOfOrbit, getLonC, getMaxLatitude, getMaxLatitudeDegrees, getMaxLongitude, getMaxLongitudeDegrees, getMinLatitude, getMinLatitudeDegrees, getMinLongitude, getMinLongitudeDegrees, getName, getPrimeMeridian, getPROJ4Description, getProjectionLatitude, getProjectionLatitude1, getProjectionLatitude1Degrees, getProjectionLatitude2, getProjectionLatitude2Degrees, getProjectionLatitudeDegrees, getProjectionLongitude, getProjectionLongitudeDegrees, getScaleFactor, getSouthernHemisphere, getTrueScaleLatitude, getTrueScaleLatitudeDegrees, getUnits, hashCode, initialize, inside, inverseProject, inverseProjectRadians, isConformal, isGeographic, isRectilinear, normalizeLongitude, normalizeLongitudeRadians, parallelsAreParallel, project, projectRadians, setAlpha, setAlphaDegrees, setAxisOrder, setEllipsoid, setFalseEasting, setFalseNorthing, setFromMetres, setGamma, setGammaDegrees, setHeightOfOrbit, setLonC, setLonCDegrees, setMaxLatitude, setMaxLongitude, setMaxLongitudeDegrees, setMinLatitude, setMinLongitude, setMinLongitudeDegrees, setName, setNoUoff, setPrimeMeridian, setProjectionLatitude, setProjectionLatitude1, setProjectionLatitude1Degrees, setProjectionLatitude2, setProjectionLatitude2Degrees, setProjectionLatitudeDegrees, setProjectionLongitude, setProjectionLongitudeDegrees, setRadius, setScaleFactor, setSouthernHemisphere, setTrueScaleLatitude, setTrueScaleLatitudeDegrees, setUnits
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Field Detail
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C_x
private static final double C_x
- See Also:
- Constant Field Values
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C_y
private static final double C_y
- See Also:
- Constant Field Values
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RC_y
private static final double RC_y
- See Also:
- Constant Field Values
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C_p
private static final double C_p
- See Also:
- Constant Field Values
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RC_p
private static final double RC_p
- See Also:
- Constant Field Values
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EPS
private static final double EPS
- See Also:
- Constant Field Values
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NITER
private final int NITER
- See Also:
- Constant Field Values
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Method Detail
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project
public ProjCoordinate project(double lplam, double lpphi, ProjCoordinate out)
Description copied from class:Projection
Computes the projection of a given point (i.e. from geographics to projection space). This should be overridden for all projections.- Overrides:
project
in classProjection
- Parameters:
lplam
- the geographic x ordinate (in radians)lpphi
- the geographic y ordinatee (in radians)out
- the projected coordinate (in coordinate system units)- Returns:
- the target coordinate
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projectInverse
public ProjCoordinate projectInverse(double xyx, double xyy, ProjCoordinate out)
Description copied from class:Projection
Computes the inverse projection of a given point (i.e. from projection space to geographics). This should be overridden for all projections.- Overrides:
projectInverse
in classProjection
- Parameters:
xyx
- the projected x ordinate (in coordinate system units)xyy
- the projected y ordinate (in coordinate system units)out
- the inverse-projected geographic coordinate (in radians)- Returns:
- the target coordinate
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hasInverse
public boolean hasInverse()
Description copied from class:Projection
Tests whether this projection has an inverse. If this method returns true then theProjection.inverseProject(ProjCoordinate, ProjCoordinate)
andProjection.inverseProjectRadians(ProjCoordinate, ProjCoordinate)
methods will return meaningful results.- Overrides:
hasInverse
in classProjection
- Returns:
- true if this projection has an inverse
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isEqualArea
public boolean isEqualArea()
Description copied from class:Projection
Tests whether this projection is equal-area An equal-area projection preserves relative sizes of projected areas.- Overrides:
isEqualArea
in classProjection
- Returns:
- true if this projection is equal-area
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toString
public java.lang.String toString()
- Overrides:
toString
in classProjection
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