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:
    Serialized Form
    • Constructor Detail

      • NewZealandMapGrid

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

      • 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.