Package gaiasky.scenegraph

Class SceneGraph

java.lang.Object
gaiasky.scenegraph.SceneGraph
All Implemented Interfaces:
com.badlogic.gdx.utils.Disposable, ISceneGraph
public class SceneGraph extends Object implements ISceneGraph

  • Field Details

    • root

      public SceneGraphNode root
      The root of the tree

    • index

      protected final Map<String,SceneGraphNode> index
      Quick lookup map. Name to node.

    • hipMap

      protected final Map<Integer,IPosition> hipMap
      Map from integer to position with all Hipparcos stars, for the constellations

    • hasOctree

      protected boolean hasOctree
      Does it contain an octree

    • hasStarGroup

      protected boolean hasStarGroup
      Does it contain a star group

  • Constructor Details

    • SceneGraph

      public SceneGraph(int numNodes)

  • Method Details

    • initialize

      public void initialize(com.badlogic.gdx.utils.Array<SceneGraphNode> nodes, ITimeFrameProvider time, boolean hasOctree, boolean hasStarGroup)
      Builds the scene graph using the given nodes.
      Specified by:
      initialize in interface ISceneGraph
      Parameters:
      nodes - The list of nodes
      time - The time provider
      hasOctree - Whether the list of nodes contains an octree
      hasStarGroup - Whether the list contains a star group

    • update

      public void update(ITimeFrameProvider time, ICamera camera)
      Description copied from interface: ISceneGraph
      Updates the nodes of this scene graph
      Specified by:
      update in interface ISceneGraph
      Parameters:
      time - The current time provider
      camera - The current camera

    • insert

      public void insert(SceneGraphNode node, boolean addToIndex)
      Description copied from interface: ISceneGraph
      Inserts a node
      Specified by:
      insert in interface ISceneGraph
      Parameters:
      node - The node to add
      addToIndex - Whether to add the ids of this node to the index

    • remove

      public void remove(SceneGraphNode node, boolean removeFromIndex)
      Description copied from interface: ISceneGraph
      Removes a node
      Specified by:
      remove in interface ISceneGraph
      Parameters:
      node - The node to remove
      removeFromIndex - Whether to remove the ids of this node from the index

    • addToIndex

      protected boolean addToIndex(SceneGraphNode node)
      Adds the given node to the index. Returns false if it was not added due to a naming conflict (name already exists) with the same object (same class and same names).
      Parameters:
      node - The node to add.
      Returns:
      False if the object already exists.

    • addNodeAuxiliaryInfo

      public void addNodeAuxiliaryInfo(SceneGraphNode node)
      Description copied from interface: ISceneGraph
      Updates the string to node map and the star map if necessary.
      Specified by:
      addNodeAuxiliaryInfo in interface ISceneGraph
      Parameters:
      node - The node to add

    • removeNodeAuxiliaryInfo

      public void removeNodeAuxiliaryInfo(SceneGraphNode node)
      Description copied from interface: ISceneGraph
      Removes the info of the node from the aux lists.
      Specified by:
      removeNodeAuxiliaryInfo in interface ISceneGraph
      Parameters:
      node - The node to remove

    • matchingFocusableNodes

      public void matchingFocusableNodes(String name, SortedSet<String> results)
      Description copied from interface: ISceneGraph
      Returns focusable nodes matching the given string, to a maximum of 10.
      Specified by:
      matchingFocusableNodes in interface ISceneGraph
      Parameters:
      name - The name.
      results - The results.

    • matchingFocusableNodes

      public void matchingFocusableNodes(String name, SortedSet<String> results, int maxResults, AtomicBoolean abort)
      Description copied from interface: ISceneGraph
      Returns focusable nodes matching the given string, to a maximum of maxResults.
      Specified by:
      matchingFocusableNodes in interface ISceneGraph
      Parameters:
      name - The name.
      results - The results.
      maxResults - The maximum number of results.
      abort - To enable abortion mid-computation.

    • containsNode

      public boolean containsNode(String name)
      Description copied from interface: ISceneGraph
      Whether this scene graphs contains a node with the given name
      Specified by:
      containsNode in interface ISceneGraph
      Parameters:
      name - The name
      Returns:
      True if this scene graph contains the node, false otherwise

    • getNode

      public SceneGraphNode getNode(String name)
      Description copied from interface: ISceneGraph
      Returns the node with the given name, or null if it does not exist.
      Specified by:
      getNode in interface ISceneGraph
      Parameters:
      name - The name of the node.
      Returns:
      The node with the name.

    • getNodes

      public com.badlogic.gdx.utils.Array<SceneGraphNode> getNodes()
      Specified by:
      getNodes in interface ISceneGraph

    • getFocusableObjects

      public com.badlogic.gdx.utils.Array<IFocus> getFocusableObjects()
      Specified by:
      getFocusableObjects in interface ISceneGraph

    • findFocus

      public IFocus findFocus(String name)
      Specified by:
      findFocus in interface ISceneGraph

    • getSize

      public int getSize()
      Specified by:
      getSize in interface ISceneGraph

    • dispose

      public void dispose()
      Specified by:
      dispose in interface com.badlogic.gdx.utils.Disposable

    • getRoot

      public SceneGraphNode getRoot()
      Specified by:
      getRoot in interface ISceneGraph

    • getStarMap

      public Map<Integer,IPosition> getStarMap()
      Description copied from interface: ISceneGraph
      Gets a star map: HIP -> IPosition It only contains the stars with HIP number
      Specified by:
      getStarMap in interface ISceneGraph
      Returns:
      The HIP star map

    • getNObjects

      public int getNObjects()

    • getObjectPosition

      public double[] getObjectPosition(String name, double[] out)
      Description copied from interface: ISceneGraph
      Gets the current position of the object identified by the given name. The given position is in the internal reference system and corrects stars for proper motions and other objects for their specific motions as well.
      Specified by:
      getObjectPosition in interface ISceneGraph
      Parameters:
      name - The name of the object
      out - The out double array
      Returns:
      The out double array if the object exists, has a position and out has 3 or more slots. Null otherwise.