Package gaiasky.data.octreegen.generator

Class OctreeGeneratorMag

java.lang.Object
gaiasky.data.octreegen.generator.OctreeGeneratorMag
All Implemented Interfaces:
IOctreeGenerator
public class OctreeGeneratorMag
extends java.lang.Object
implements IOctreeGenerator
Implements a f: mag -> level bijective map, where octree nodes in a level are filled with magnitude-sorted stars until one of them is saturated before proceeding to lower levels. This uses more memory than the outdated OctreeGeneratorPart but it generally produces an artifact-free octree. The technique is called MS-LOD.

  • Field Summary

    Fields inherited from interface gaiasky.data.octreegen.generator.IOctreeGenerator

    logger

  • Constructor Summary

    Constructors
    Constructor Description
    OctreeGeneratorMag​(OctreeGeneratorParams params)  

  • Method Summary

    Modifier and Type Method Description
    OctreeNode generateOctree​(java.util.List<IParticleRecord> catalog)  
    int getDiscarded()  
    java.lang.Long getPositionOctantId​(double x, double y, double z, int level)
    Gets the id of the node which corresponds to the given xyz position

    Methods inherited from class java.lang.Object

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

  • Constructor Details

  • Method Details

    • generateOctree

      public OctreeNode generateOctree​(java.util.List<IParticleRecord> catalog)
      Specified by:
      generateOctree in interface IOctreeGenerator

    • getDiscarded

      public int getDiscarded()
      Specified by:
      getDiscarded in interface IOctreeGenerator

    • getPositionOctantId

      public java.lang.Long getPositionOctantId​(double x, double y, double z, int level)
      Gets the id of the node which corresponds to the given xyz position
      Parameters:
      x - Position in x
      y - Position in y
      z - Position in z
      level - Level
      Returns:
      Id of node which contains the position. The id is a long where the two least significant digits indicate the level and the rest of digit positions indicate the index in the level of the position.