All Implemented Interfaces:
Serializable, MathTransform, MathTransform2D

public final class Gnomonic extends MapProjection
The gnomonic projection using a spheroid algorithm.
Since:
12.3
Author:
Simon Schafer
See Also:
  • 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:
    • getParameterValues

      public ParameterValueGroup getParameterValues()
      Returns the parameter values for this map projection.
      Overrides:
      getParameterValues in class MapProjection
      Returns:
      A copy of the parameter values for this map projection.
      See Also:
    • transformNormalized

      protected Point2D transformNormalized(double lambda, 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:
      lambda - 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)
      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.
    • 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.
    • hashCode

      public int hashCode()
      Returns a hash value for this map projection.
      Overrides:
      hashCode in class MapProjection