Foundation

These nodes are the basic nodes from which many functions are inherited

ygCAVEViewer	establishes a view point for the CAVE library rendering
ygNode	the base class from which all scripted Ygdrasil nodes are derived
ygSoundServer	creates a bergen sound server and manages sound clients
ygSpace	defines a space that is rectangular, spherical, cylindrical, point or infinite in volume
ygViewer	establishes a view point for the rendering library
ygWorld	the class that loads scene files and maintains the scene graph

User

These nodes are used to establish user presence and navigation

body	a transform that is a fixed distance below the head of the user
grabNavigator	a navigator that can grab and move with respect to another node
vectorNavigator	a navigator that takes a direction and rotation vector
ygCAVEHead	creates a transform tracked with sensor 0 and a ygHead child node
ygCAVENavigator	creates a navigator with CAVE navigation data for the user
ygCAVETracker	creates a tracked simple transform from a CAVE sensor
ygCAVEWand	creates a wand that detects CAVE wand button events
ygHead	creates a transform tracked with sensor 0 for the user head
ygNavigator	creates a navigator with navigation data for the user
ygUser	aggregates the user related functions of wands, navigators, and trackers
ygWand	creates a wand for the user and adds it to the user wand list

Geometry

These nodes are used to load or create objects seen by the user

mirror	a space within which all subject geometry and users are mirrored
morpher	creates a morphed object between two or more models
particleSystem	a node that creates a particle system
quadparts	creates a number of falling particles in a range about the user
rain	creates any number of rain particles in a range about the user
reference	creates another instance of Performer geometry
reflection	a transform that reflects scene geometry about an axis
smoke	creates a rising plume of smoke
snow	creates any number of snow particles in a range about the user
surface	a tri-strip surface of variable size
text	a node that creates a 3D string of text
visualPriority	a node that sets the visual priority of children
waves	a tri-strip surface with a sinusoidal wave motion
ygGeometry	a base class for ygGeometry nodes
ygObject	loads and transforms models from any one of the accepted Performer model formats
ygScene	a node that loads a scene file
ygTexture	load a texture and place it on a polygon

Sound

These nodes are used to create or manipulate sounds heard by the user

amplitude	a node that generates events with the value of the microphone amplitude
ratSource	creates a positional sound within a space using a RAT source
soundRecorder	creates a node that will record the microphone input to a file
tone	creates a positional tone at a specified frequency within a space
whiteNoise	creates a positional whiteNoise source within a space
ygSound	creates a positional sound within a space using one of several file formats

Transformation

These nodes are used to place or move geometry in the scene

billboard	a transform that orients to face the viewer about a point or axis
grabber	a transform that moves with respect to a wand or other transformed node
gravity	a transform that moves down to the first floor intersection found
manipulator	a transform that moves with respect to a wand or other transformed node
mover	a quaternian based motion path between two positions and orientations
moveToNode	a mover that takes end coordinates from a node
orientAxis	a transform that orients itself about an axis
pathRandom	a transform that will move an object throught a random path inside a volume
physics	a transform that uses simple physics for dynamic motion
pointAtNode	a transform that orients to face a node about a point or axis
pointFollower	a transform that moves a percentage along a path of points
pointMover	a transform that moves a percentage along a path of points and orientations
poserAnimator	allows the loading and animation of poser motion file
ygGrid	a grid for snapping transformations
ygTransform	creates a transformation matrix with position, orientation, and scale

Selection

These nodes are used to select which geometry will be shown

flipbook	a selector that rotates through the sequence in a fixed duration
levelOfDetail	a selector based on distance from the viewer
localData	a switch that is only turned on for the host site
localFlipbook	a selector that rotates through the sequence in a fixed duration
userSwitch	sets up an independent Performer switch state for each user
visibility	a switch that changes state if a user is in one or more spaces
ygSelector	selects one child node for node processing and Performer traversal
ygSwitch	toggles the child for node processing and Performer traversal

Attributes

These nodes are used to change geometry attributes

applyTexture	applies a texture to the existing texture on objects below it
CAVEEyes	a node that allows drawing to one or both eyes
clipPlane	a clipping plane that can be positioned within the scene
geometrySwitch	a node that switches intersection and draw state
highlight	adds highlighting to the nodes below it
layer	set the heirerchy for rendering of coplanar surfaces
material	adjusts the material properties of all nodes below it
movieTexture	replaces the texture on objects below it with that of a movie file
spotLight	creates a point light source
stencilBuffer	a node that implements stencil buffering
textureTransform	adjust the texture matrix of all nodes below this node
videoTexture	displays a live video stream
viewTexture	replaces the texture on objects below it with that of a rendered view
ygEnvironment	establishes sky color, fog, and clipping plane parameters within a space
ygLight	creates a light source with direction, ambient, diffuse, and specular settings

Trigger

These nodes trigger events

keyboard	creates events from keyboard input
nodeTrigger	a space that generates position events in the presence of a node type
pointAtTrigger	detects a wand pointing at any geometry below it and produces an event
userTrigger	a space that generates events in the presence of a user head
wandTrigger	a space that generates events in the presence of a user and wand

Math

These nodes are used for timing, numerical calculations, and logic operations

add	a value node that computes the sum of its children
and	a boolean node that computes the AND of its children
boolean	a variable size array of boolean values
clock	a value node that computes the current time
distance	a node that generates the distance to a node
divide	a value node that computes the quotient of its children
equalTo	a boolean node that does an = test on its children
greaterEqual	a boolean node that does a >= test on its children
greaterThan	a boolean node that does a > test on its children
interpolate	an array that interpolates between a start array and an end array
lessEqual	a boolean node that does a <= test on its children
lessThan	a boolean node that does a < test on its children
mathematics	a value node that performs common mathematic operations
maximum	a value node that computes the maximum of its children
minimum	a value node that computes the minimum of its children
multiply	a value node that computes the product of its children
Negate	a value node that computes the negative of its last child
not	a boolean node that computes the NOT of its last child
or	a boolean node that computes the OR of its children
positioner	a valuator that can only take positions and orientations listed in a file
proximity	a node that generates the distance to the nearest user
readFile	an array that is read from a file
remoteValue	an array that is created and updated on each client
String	a node that stores and manipulates a character string
subtract	a value node that computes the difference of its children
timer	a timer that generates changing values over a duration
valuator	an interpolate node with transformed position and orientation values
value	a variable size array of values
writeFile	an array that is read from a file

System

These nodes are used to support various interface functions

CAVEWindow	generates events with the size of the simulator window
classListing	generates events describing node class types
directoryListing	generates events describing directory files
eventListing	generates events describing node event names
nodeListing	generates events describing node names
nodeMessages	generates events describing node messages
sceneGraph	a node that creates a graph of scene nodes
System	a node that executes a character string as a shell command