Class NewZealandMapGrid

All Implemented Interfaces:
Serializable, MathTransform, MathTransform2D

public class NewZealandMapGrid extends MapProjection
The NZMG (New Zealand Map Grid) projection.

This is an implementation of algorithm published by Land Information New Zealand. The algorithm is documented here.

Implementation note
This class make extensive use of Complex type which may be costly unless the compiler can inline on the stack. We assume that Jave 6 and above can do this optimization.

Since:
2.2
Author:
Justin Deoliveira, Martin Desruisseaux
See Also:
  • Constructor Details

    • NewZealandMapGrid

      protected NewZealandMapGrid()
      Constructs a new map projection with default parameter values.
    • NewZealandMapGrid

      protected NewZealandMapGrid(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.
  • Method Details

    • 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:
    • 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 in ptDst (linear distance on a unit sphere).
      Specified by:
      transformNormalized in class MapProjection
      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 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.