org.geotools.referencing.operation.projection
Class Polyconic
Object
Formattable
AbstractMathTransform
MapProjection
Polyconic
- All Implemented Interfaces:
- Serializable, MathTransform, MathTransform2D
public class Polyconic
- extends MapProjection
Polyconic (American).
References:
- John P. Snyder (Map Projections - A Working Manual,
U.S. Geological Survey Professional Paper 1395, 1987)
- "Coordinate Conversions and Transformations including Formulas",
EPSG Guidence Note Number 7, Version 19.
- Since:
- 2.6.1
- Author:
- Andrea Aime
- See Also:
- Polyconic projection on MathWorld,
"Polyconic" on RemoteSensing.org,
Serialized Form
- Module:
modules/library/referencing (gt-referencing.jar)
Fields inherited from class MapProjection |
centralMeridian, en0, en1, en2, en3, en4, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, isSpherical, latitudeOfOrigin, LOGGER, scaleFactor, semiMajor, semiMinor |
Methods inherited from class AbstractMathTransform |
createTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, isIdentity, needCopy, rollLongitude, transform, transform, transform |
Polyconic
protected Polyconic(ParameterValueGroup parameters)
throws ParameterNotFoundException
- Constructs a new map projection from the supplied parameters.
- Parameters:
parameters
- The parameter values in standard units.
- Throws:
ParameterNotFoundException
- if a mandatory parameter is missing.
getParameterDescriptors
public ParameterDescriptorGroup getParameterDescriptors()
- Returns the parameter descriptors for this map projection.
This is used for a providing a default implementation of
MapProjection.getParameterValues()
, as well as arguments checking.
- Specified by:
getParameterDescriptors
in class MapProjection
- Returns:
- The parameter descriptors for this math transform, or
null
. - See Also:
OperationMethod.getParameters()
transformNormalized
protected Point2D transformNormalized(double lam,
double phi,
Point2D ptDst)
throws ProjectionException
- Transforms the specified (λ,φ) coordinates
(units in radians) and stores the result in
ptDst
(linear distance
on a unit sphere).
- Specified by:
transformNormalized
in class MapProjection
- Parameters:
lam
- 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 transforming
ptSrc
, or null
. 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 in ptDst
.
- Throws:
ProjectionException
- if the point can't be transformed.
inverseTransformNormalized
protected Point2D inverseTransformNormalized(double x,
double y,
Point2D ptDst)
throws ProjectionException
- Transforms the specified (x,y) coordinates
and stores the result in
ptDst
.
- Specified by:
inverseTransformNormalized
in class MapProjection
- 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 transforming
ptSrc
, or null
. Ordinates will be in radians.
- Returns:
- the coordinate point after transforming
x
, y
and storing the result in ptDst
.
- Throws:
ProjectionException
- if the point can't be transformed.
getToleranceForAssertions
protected double getToleranceForAssertions(double longitude,
double latitude)
- Description copied from class:
MapProjection
- Maximal error (in metres) tolerated for assertions, if enabled. When assertions are enabled,
every direct projection is followed by an inverse projection, and the result is compared to
the original coordinate. If a distance greater than the tolerance level is found, then an
ProjectionException
will be thrown. Subclasses should override this method if they
need to relax the tolerance level.
- Overrides:
getToleranceForAssertions
in class MapProjection
- Parameters:
longitude
- The longitude in decimal degrees.latitude
- The latitude in decimal degrees.
- Returns:
- The tolerance level for assertions, in meters.
hashCode
public int hashCode()
- Returns a hash value for this projection.
- Overrides:
hashCode
in class MapProjection
equals
public boolean equals(Object object)
- Compares the specified object with this map projection for equality.
- Overrides:
equals
in class MapProjection
- 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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