Package cds.healpix

Class Range

  • public class Range
extends java.lang.Object
    Defines an Hash Range at the deeper depth.
    Author:
    F.-X. Pineau

    • Field Summary

      Fields 
      Modifier and Type Field Description
      long from
      Range lower bound (inclusive).
      long to
      Range lower bound (exclusive).

    • Constructor Summary

      Constructors 
      Constructor Description
      Range​(long from, long to)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void toCells​(CellSink sink)
      Transforms this range in a list of HEALPix cells that are added to the given sink.
      void toCellsGeneralized​(int dim, int absoluteDepthMax, CellSink sink)
      Transforms this range in a list of cells that are added to the given sink.
      void toCellsWithKnowledge​(CellSink sink, int depthMax, int twiceDD, long rangeLenMin, long mask)
      Same as toCells but with additional informations which are (see parameter list).

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • from

        public final long from
        Range lower bound (inclusive).

      • to

        public long to
        Range lower bound (exclusive).

    • Constructor Detail

      • Range

        public Range​(long from,
             long to)

    • Method Detail

      • toCells

        public void toCells​(CellSink sink)
        Transforms this range in a list of HEALPix cells that are added to the given sink. IMPORTANT: the order in which the cells are added follows the natural Z-order curve order!
        Parameters:
        sink - object receiving each cell

      • toCellsGeneralized

        public void toCellsGeneralized​(int dim,
                               int absoluteDepthMax,
                               CellSink sink)
        Transforms this range in a list of cells that are added to the given sink. IMPORTANT: the order in which the cells are added follows the natural Z-order curve order!
        Parameters:
        dim - the z-order curve dimension (2 for HEALPix, 1 for time, ...)
        absoluteDepthMax - max depth (29 for HEALPIX, ...)
        sink - object receiving each cell

      • toCellsWithKnowledge

        public void toCellsWithKnowledge​(CellSink sink,
                                 int depthMax,
                                 int twiceDD,
                                 long rangeLenMin,
                                 long mask)
        Same as toCells but with additional informations which are (see parameter list). This version may have better performances since a large part of the cells in a MOC are at the deepest MOC order.
        Parameters:
        sink - object receiving each cell
        depthMax - the depth of the lower possible cell order in the Range (i.e. the MOC order)
        twiceDD - (29 - depthMax) << 1, provided not ot have to recompute it
        rangeLenMin - 1L << twiceDD, provided not to have to recompute it
        mask - 3L << twiceDD, provided not to have to recompute it