Class EquidistantConic
- Object
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- Formattable
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- AbstractMathTransform
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- MapProjection
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- EquidistantConic
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- All Implemented Interfaces:
Serializable
,MathTransform
,MathTransform2D
public class EquidistantConic extends MapProjection
Equidistant Conic Projection.NOTE: formulae used below are from a port, to Java, of the
proj4
package of the USGS survey. USGS work is acknowledged here.References:
- Proj-4.4.7 available at trac.osgeo.org/proj/.
Relevant files are:PJ_eqdc.c
,pj_mlfn.c
,pj_msfn.c
,pj_fwd.c
andpj_inv.c
.
- Since:
- 2.6.1
- Author:
- Ivan Boldyrev
- See Also:
- Conic Equidistant projection on mathworld.wolfram.com, "Equidistant Conic" on www.remotesensing.org, Serialized Form
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
EquidistantConic.Provider
The math transform provider for a EquidistantConic 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
EquidistantConic(ParameterValueGroup parameters)
Creates a transform from the specified group of parameter values.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ParameterDescriptorGroup
getParameterDescriptors()
Returns the parameter descriptors for this map projection.ParameterValueGroup
getParameterValues()
Returns the parameter values 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 x, double y, 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, equals, getSourceDimensions, getTargetDimensions, getToleranceForAssertions, hashCode, 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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EquidistantConic
protected EquidistantConic(ParameterValueGroup parameters) throws ParameterNotFoundException
Creates a transform from the specified group of parameter values.- Parameters:
parameters
- The group of parameter values.- Throws:
ParameterNotFoundException
- if a required parameter was not found.- Since:
- 2.4
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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 x, double y, 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:
x
- The longitude of the coordinate, in radians.y
- 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) throws ProjectionException
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
. - Throws:
ProjectionException
- if the point can't be transformed.
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