Class CassiniSoldner
java.lang.Object
org.apache.sis.io.wkt.FormattableObject
org.apache.sis.referencing.operation.transform.AbstractMathTransform
org.apache.sis.referencing.operation.transform.AbstractMathTransform2D
org.apache.sis.referencing.operation.projection.NormalizedProjection
org.apache.sis.referencing.operation.projection.MeridianArcBased
org.apache.sis.referencing.operation.projection.CassiniSoldner
- All Implemented Interfaces:
Serializable
,Parameterized
,LenientComparable
,org.opengis.referencing.operation.MathTransform
,org.opengis.referencing.operation.MathTransform2D
- Direct Known Subclasses:
CassiniSoldner.Spherical
Cassini-Soldner projection (EPSG codes 9806 and 9833).
See the following references for an overview:
The ellipsoidal form of this projection is suitable only within a few degrees (3° or 4° of longitude)
to either side of the central meridian.
- Since:
- 1.1
- Version:
- 1.2
- See Also:
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Nested Class Summary
Nested ClassesModifier and TypeClassDescription(package private) static final class
Provides the transform equations for the spherical case of the Cassini-Soldner projection.private static enum
The hyperbolic variants of this projection.Nested classes/interfaces inherited from class org.apache.sis.referencing.operation.projection.NormalizedProjection
NormalizedProjection.ParameterRole
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final double
Meridional distance M from equator to latitude of origin φ₀.private static final long
For cross-version compatibility.private static final double
The latitude ofinvalid reference
#VANUA
private final CassiniSoldner.Variant
The type of Cassini-Soldner projection.Fields inherited from class org.apache.sis.referencing.operation.projection.NormalizedProjection
ANGULAR_TOLERANCE, context, eccentricity, eccentricitySquared, ITERATION_TOLERANCE, LARGE_LONGITUDE_LIMIT, MAXIMUM_ITERATIONS, POLAR_AREA_LIMIT
Fields inherited from class org.apache.sis.referencing.operation.transform.AbstractMathTransform2D
DIMENSION
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Constructor Summary
ConstructorsConstructorDescriptionCassiniSoldner
(CassiniSoldner other) Creates a new projection initialized to the same parameters than the given one.CassiniSoldner
(Initializer initializer) Creates a new Cassini-Soldner projection from the given initializer.CassiniSoldner
(org.opengis.referencing.operation.OperationMethod method, Parameters parameters) Creates a Cassini-Soldner projection from the given parameters. -
Method Summary
Modifier and TypeMethodDescriptionorg.opengis.referencing.operation.MathTransform
createMapProjection
(org.opengis.referencing.operation.MathTransformFactory factory) Returns the sequence of normalization →this
→ denormalization transforms as a whole.(package private) final String[]
Returns the names of additional internal parameters which need to be taken in account when comparing twoCassiniSoldner
projections or formatting them in debug mode.(package private) final double[]
Returns the values of additional internal parameters which need to be taken in account when comparing twoCassiniSoldner
projections or formatting them in debug mode.private static Initializer
initializer
(org.opengis.referencing.operation.OperationMethod method, Parameters parameters) Work around for RFE #4093999 in Sun's bug database ("Relax constraint on placement of this()/super() call in constructors").protected void
inverseTransform
(double[] srcPts, int srcOff, double[] dstPts, int dstOff) Converts the specified (x,y) coordinates and stores the result indstPts
(angles in radians).org.opengis.referencing.operation.Matrix
transform
(double[] srcPts, int srcOff, double[] dstPts, int dstOff, boolean derivate) Projects the specified (λ,φ) coordinates (units in radians) and stores the result indstPts
.Methods inherited from class org.apache.sis.referencing.operation.projection.MeridianArcBased
distance, dM_dφ, latitude
Methods inherited from class org.apache.sis.referencing.operation.projection.NormalizedProjection
completeWithWraparound, computeHashCode, delegate, equals, getContextualParameters, getParameterDescriptors, getParameterValues, getWraparoundLongitude, inverse, tryConcatenate, tryConcatenate, variant
Methods inherited from class org.apache.sis.referencing.operation.transform.AbstractMathTransform2D
createTransformedShape, derivative, getSourceDimensions, getTargetDimensions, transform
Methods inherited from class org.apache.sis.referencing.operation.transform.AbstractMathTransform
derivative, equals, formatTo, getDomain, hashCode, isIdentity, transform, transform, transform, transform, transform
Methods inherited from class org.apache.sis.io.wkt.FormattableObject
print, toString, toString, toWKT
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.opengis.referencing.operation.MathTransform
derivative, isIdentity, toWKT, transform, transform, transform, transform, transform
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Field Details
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serialVersionUID
private static final long serialVersionUIDFor cross-version compatibility.- See Also:
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VANUA_LATITUDE
private static final double VANUA_LATITUDEThe latitude ofinvalid reference
#VANUA
- See Also:
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variant
The type of Cassini-Soldner projection. Possible values are:null
if this projection is the standard variant.CassiniSoldner.Variant.HYPERBOLIC
if this projection is the "Hyperbolic Cassini-Soldner" case.CassiniSoldner.Variant.VANUA
if this projection is the "Hyperbolic Cassini-Soldner" case at φ₀=16°15′S.
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M0
private final double M0Meridional distance M from equator to latitude of origin φ₀. This parameter is explicit only for the hyperbolic variants. The standard variant does not need it becauseM0
is subtracted in the denormalization matrix.
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Constructor Details
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CassiniSoldner
public CassiniSoldner(org.opengis.referencing.operation.OperationMethod method, Parameters parameters) Creates a Cassini-Soldner projection from the given parameters. Themethod
argument can be the description of one of the following:- "Cassini-Soldner".
- "Hyperbolic Cassini-Soldner".
- Parameters:
method
- description of the projection parameters.parameters
- the parameter values of the projection to create.
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CassiniSoldner
CassiniSoldner(Initializer initializer) Creates a new Cassini-Soldner projection from the given initializer. -
CassiniSoldner
CassiniSoldner(CassiniSoldner other) Creates a new projection initialized to the same parameters than the given one.
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Method Details
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initializer
@Workaround(library="JDK", version="1.7") private static Initializer initializer(org.opengis.referencing.operation.OperationMethod method, Parameters parameters) Work around for RFE #4093999 in Sun's bug database ("Relax constraint on placement of this()/super() call in constructors"). -
getInternalParameterNames
Returns the names of additional internal parameters which need to be taken in account when comparing twoCassiniSoldner
projections or formatting them in debug mode.- Overrides:
getInternalParameterNames
in classNormalizedProjection
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getInternalParameterValues
final double[] getInternalParameterValues()Returns the values of additional internal parameters which need to be taken in account when comparing twoCassiniSoldner
projections or formatting them in debug mode.- Overrides:
getInternalParameterValues
in classNormalizedProjection
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createMapProjection
public org.opengis.referencing.operation.MathTransform createMapProjection(org.opengis.referencing.operation.MathTransformFactory factory) throws org.opengis.util.FactoryException Returns the sequence of normalization →this
→ denormalization transforms as a whole. The transform returned by this method expects (longitude, latitude) coordinates in degrees and returns (x,y) coordinates in metres. The non-linear part of the returned transform will bethis
transform, except if the ellipsoid is spherical. In the latter case,this
transform may be replaced by a simplified implementation.- Overrides:
createMapProjection
in classNormalizedProjection
- Parameters:
factory
- the factory to use for creating the transform.- Returns:
- the map projection from (λ,φ) to (x,y) coordinates.
- Throws:
org.opengis.util.FactoryException
- if an error occurred while creating a transform.- See Also:
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transform
public org.opengis.referencing.operation.Matrix transform(double[] srcPts, int srcOff, double[] dstPts, int dstOff, boolean derivate) throws ProjectionException Projects the specified (λ,φ) coordinates (units in radians) and stores the result indstPts
. In addition, opportunistically computes the projection derivative ifderivate
istrue
. The results must be multiplied by the denormalization matrix before to get linear distances.- Specified by:
transform
in classNormalizedProjection
- Parameters:
srcPts
- the array containing the source point coordinates, as (longitude, latitude) angles in radians.srcOff
- the offset of the single coordinate tuple to be converted in the source array.dstPts
- the array into which the converted coordinates is returned (may be the same thansrcPts
). Coordinates will be expressed in a dimensionless unit, as a linear distance on a unit sphere or ellipse.dstOff
- the offset of the location of the converted coordinates that is stored in the destination array.derivate
-true
for computing the derivative, orfalse
if not needed.- Returns:
- the matrix of the projection derivative at the given source position,
or
null
if thederivate
argument isfalse
. - Throws:
ProjectionException
- if the coordinates cannot be converted.- See Also:
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inverseTransform
protected void inverseTransform(double[] srcPts, int srcOff, double[] dstPts, int dstOff) throws ProjectionException Converts the specified (x,y) coordinates and stores the result indstPts
(angles in radians).- Specified by:
inverseTransform
in classNormalizedProjection
- Parameters:
srcPts
- the array containing the source point coordinates, as linear distance on a unit sphere or ellipse.srcOff
- the offset of the point to be converted in the source array.dstPts
- the array into which the converted point coordinates is returned (may be the same thansrcPts
). Coordinates will be (longitude, latitude) angles in radians.dstOff
- the offset of the location of the converted point that is stored in the destination array.- Throws:
ProjectionException
- if the point cannot be converted.
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