Class Gnomonic
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- All Implemented Interfaces:
Serializable
,MathTransform
,MathTransform2D
public final class Gnomonic extends MapProjection
The gnomonic projection using a spheroid algorithm.- Since:
- 12.3
- Author:
- Simon Schafer
- See Also:
- Serialized Form
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
Gnomonic.Provider
The math transform provider for a Gnomonic projection-
Nested classes/interfaces inherited from class MapProjection
MapProjection.AbstractProvider
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Field Summary
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Fields inherited from class MapProjection
centralMeridian, en0, en1, en2, en3, en4, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, invertible, isSpherical, latitudeOfOrigin, LOGGER, scaleFactor, semiMajor, semiMinor, SKIP_SANITY_CHECKS
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Fields inherited from class Formattable
SINGLE_LINE
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Constructor Summary
Constructors Modifier Constructor Description protected
Gnomonic(ParameterValueGroup parameters)
Constructs a gnomonic projection using a spheroid algorithm.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
equals(Object object)
Compares the specified object with this map projection for equality.ParameterDescriptorGroup
getParameterDescriptors()
Returns the parameter descriptors for this map projection.ParameterValueGroup
getParameterValues()
Returns the parameter values for this map projection.int
hashCode()
Returns a hash value for this map projection.protected Point2D
inverseTransformNormalized(double x, double y, Point2D ptDst)
Transforms the specified (x,y) coordinates and stores the result inptDst
.protected Point2D
transformNormalized(double lambda, double phi, Point2D ptDst)
Transforms the specified (λ,φ) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).-
Methods inherited from class MapProjection
checkReciprocal, getSourceDimensions, getTargetDimensions, getToleranceForAssertions, inv_mlfn, inverse, mlfn, orthodromicDistance, resetWarnings, transform, transform, transform
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Methods inherited from class AbstractMathTransform
createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, isIdentity, needCopy, normalizeAngle, rollLongitude, transform, transform, transform
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Methods inherited from class Formattable
cleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKT
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Methods inherited from interface MathTransform
derivative, isIdentity, toWKT, transform, transform, transform
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Methods inherited from interface MathTransform2D
createTransformedShape, derivative
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Constructor Detail
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Gnomonic
protected Gnomonic(ParameterValueGroup parameters) throws ParameterNotFoundException
Constructs a gnomonic projection using a spheroid algorithm.- Parameters:
parameters
- The parameter values in standard units.- Throws:
ParameterNotFoundException
- if a mandatory parameter is missing.
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Method Detail
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getParameterDescriptors
public ParameterDescriptorGroup getParameterDescriptors()
Returns the parameter descriptors for this map projection. This is used for a providing a default implementation ofMapProjection.getParameterValues()
, as well as arguments checking.- Specified by:
getParameterDescriptors
in classMapProjection
- Returns:
- The parameter descriptors for this math transform, or
null
. - See Also:
OperationMethod.getParameters()
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getParameterValues
public ParameterValueGroup getParameterValues()
Returns the parameter values for this map projection.- Overrides:
getParameterValues
in classMapProjection
- Returns:
- A copy of the parameter values for this map projection.
- See Also:
Operation.getParameterValues()
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transformNormalized
protected Point2D transformNormalized(double lambda, double phi, Point2D ptDst) throws ProjectionException
Transforms the specified (λ,φ) coordinates (units in radians) and stores the result inptDst
(linear distance on a unit sphere).- Specified by:
transformNormalized
in classMapProjection
- Parameters:
lambda
- The longitude of the coordinate, in radians.phi
- The latitude of the coordinate, in radians.ptDst
- the specified coordinate point that stores the result of transformingptSrc
, ornull
. Ordinates will be in a dimensionless unit, as a linear distance on a unit sphere or ellipse.- Returns:
- the coordinate point after transforming (
lambda
,phi
) and storing the result inptDst
. - Throws:
ProjectionException
- if the point can't be transformed.
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inverseTransformNormalized
protected Point2D inverseTransformNormalized(double x, double y, Point2D ptDst)
Transforms the specified (x,y) coordinates and stores the result inptDst
.- Specified by:
inverseTransformNormalized
in classMapProjection
- Parameters:
x
- The easting of the coordinate, linear distance on a unit sphere or ellipse.y
- The northing of the coordinate, linear distance on a unit sphere or ellipse.ptDst
- the specified coordinate point that stores the result of transformingptSrc
, ornull
. Ordinates will be in radians.- Returns:
- the coordinate point after transforming
x
,y
and storing the result inptDst
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equals
public boolean equals(Object object)
Compares the specified object with this map projection for equality.- Overrides:
equals
in classMapProjection
- Parameters:
object
- The object to compare with this transform.- Returns:
true
if the given object is a transform of the same class and if, given identical source position, the transformed position would be the equals.
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hashCode
public int hashCode()
Returns a hash value for this map projection.- Overrides:
hashCode
in classMapProjection
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