Package javax.media.j3d

Class LOD

  • Direct Known Subclasses:
    DistanceLOD
    public abstract class LOD
extends Behavior
    An LOD leaf node is an abstract behavior class that operates on a list of Switch group nodes to select one of the children of the Switch nodes. The LOD class is extended to implement various selection criteria.

    • Constructor Detail

      • LOD

        public LOD()
        Constructs and initializes an LOD node.

    • Method Detail

      • addSwitch

        public void addSwitch​(Switch switchNode)
        Appends the specified switch node to this LOD's list of switches.
        Parameters:
        switchNode - the switch node to add to this LOD's list of switches

      • setSwitch

        public void setSwitch​(Switch switchNode,
                      int index)
        Replaces the specified switch node with the switch node provided.
        Parameters:
        switchNode - the new switch node
        index - which switch node to replace

      • insertSwitch

        public void insertSwitch​(Switch switchNode,
                         int index)
        Inserts the specified switch node at specified index.
        Parameters:
        switchNode - the new switch node
        index - position to insert new switch node at

      • removeSwitch

        public void removeSwitch​(int index)
        Removes the switch node at specified index.
        Parameters:
        index - which switch node to remove

      • getSwitch

        public Switch getSwitch​(int index)
        Returns the switch node specified by the index.
        Parameters:
        index - which switch node to return
        Returns:
        the switch node at location index

      • getAllSwitches

        public java.util.Enumeration getAllSwitches()
        Returns the enumeration object of all switches.
        Returns:
        the enumeration object of all switches

      • numSwitches

        public int numSwitches()
        Returns a count of this LOD's switches.
        Returns:
        the number of switches controlled by this LOD

      • indexOfSwitch

        public int indexOfSwitch​(Switch switchNode)
        Retrieves the index of the specified switch node in this LOD node's list of switches.
        Parameters:
        switchNode - the switch node to be looked up.
        Returns:
        the index of the specified switch node; returns -1 if the object is not in the list.
        Since:
        Java 3D 1.3

      • removeSwitch

        public void removeSwitch​(Switch switchNode)
        Removes the specified switch node from this LOD node's list of switches. If the specified object is not in the list, the list is not modified.
        Parameters:
        switchNode - the switch node to be removed.
        Since:
        Java 3D 1.3

      • removeAllSwitches

        public void removeAllSwitches()
        Removes all switch nodes from this LOD node.
        Since:
        Java 3D 1.3

      • updateNodeReferences

        public void updateNodeReferences​(NodeReferenceTable referenceTable)
        Callback used to allow a node to check if any nodes referenced by that node have been duplicated via a call to cloneTree. This method is called by cloneTree after all nodes in the sub-graph have been duplicated. The cloned Leaf node's method will be called and the Leaf node can then look up any node references by using the getNewObjectReference method found in the NodeReferenceTable object. If a match is found, a reference to the corresponding Node in the newly cloned sub-graph is returned. If no corresponding reference is found, either a DanglingReferenceException is thrown or a reference to the original node is returned depending on the value of the allowDanglingReferences parameter passed in the cloneTree call.

        NOTE: Applications should not call this method directly. It should only be called by the cloneTree method.

        Overrides:
        updateNodeReferences in class Behavior
        Parameters:
        referenceTable - a NodeReferenceTableObject that contains the getNewObjectReference method needed to search for new object instances.
        See Also:
        NodeReferenceTable, Node.cloneTree(), DanglingReferenceException