public class ObliqueStereographic extends Stereographic
libproj4 package
written by Gerald Evenden. His work is acknowledged here and greatly appreciated.
The forward equations used in libproj4 are the same as those given in the
UNB reports for the Double Stereographic. The inverse equations are similar,
but use different methods to iterate for the latitude.
References:
libproj4 is available at
libproj4 MiscellaneaPJ_sterea.c, pj_gauss.c,
pj_fwd.c, pj_inv.c and lib_proj.h| Modifier and Type | Class and Description |
|---|---|
static class |
ObliqueStereographic.Provider
The math transform
provider for a stereographic projection of any kind.
|
MapProjection.AbstractProvidercentralMeridian, en0, en1, en2, en3, en4, excentricity, excentricitySquared, falseEasting, falseNorthing, globalScale, invertible, isSpherical, latitudeOfOrigin, LOGGER, scaleFactor, semiMajor, semiMinor, SKIP_SANITY_CHECKSSINGLE_LINE| Modifier | Constructor and Description |
|---|---|
protected |
ObliqueStereographic(ParameterValueGroup parameters)
Constructs an oblique stereographic projection (EPSG equations).
|
| Modifier and Type | Method and Description |
|---|---|
protected double |
getToleranceForAssertions(double longitude,
double latitude)
Maximal error (in metres) tolerated for assertions, if enabled.
|
protected Point2D |
inverseTransformNormalized(double x,
double y,
Point2D ptDst)
Transforms the specified (x,y) coordinates
and stores the result in
ptDst. |
protected Point2D |
transformNormalized(double x,
double y,
Point2D ptDst)
Transforms the specified (λ,φ) coordinates
(units in radians) and stores the result in
ptDst (linear distance
on a unit sphere). |
equals, getParameterDescriptorscheckReciprocal, getParameterValues, getSourceDimensions, getTargetDimensions, hashCode, inv_mlfn, inverse, mlfn, orthodromicDistance, resetWarnings, transform, transform, transformcreateTransformedShape, derivative, derivative, ensureNonNull, formatWKT, getName, isIdentity, needCopy, normalizeAngle, rollLongitude, transform, transform, transformcleanupThreadLocals, toString, toWKT, toWKT, toWKT, toWKTcreateTransformedShape, derivativederivative, isIdentity, toWKT, transform, transform, transformprotected ObliqueStereographic(ParameterValueGroup parameters) throws ParameterNotFoundException
parameters - The group of parameter values.ParameterNotFoundException - if a required parameter was not found.protected Point2D transformNormalized(double x, double y, Point2D ptDst) throws ProjectionException
ptDst (linear distance
on a unit sphere).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 transforming
ptSrc, or null. Ordinates will be in a
dimensionless unit, as a linear distance on a unit sphere or ellipse.lambda, phi)
and storing the result in ptDst.ProjectionException - if the point can't be transformed.protected Point2D inverseTransformNormalized(double x, double y, Point2D ptDst) throws ProjectionException
ptDst.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.x, y
and storing the result in ptDst.ProjectionException - if the point can't be transformed.protected double getToleranceForAssertions(double longitude,
double latitude)
getToleranceForAssertions in class MapProjectionlongitude - The longitude in decimal degrees.latitude - The latitude in decimal degrees.Copyright © 1996–2017 Geotools. All rights reserved.