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2d: Geometry in 2d, like connecting lines, calculating coordinates etc.
3d: Geometry in 3d.
4d:
Animation: Things which will animate over time and therefore have an internal state; Generate motion, smooth and filter motion, record and store values. FlipFlops and other Logic nodes.
Astronomy: Everything having to do with the Earth and the Universe; Current Time, calculation of earth, moon and sun’s parameters.
Boolean:
Color: Working with color, color addition, subtraction, blending, color models etc.
Debug: Displaying system status information in various undocumented formats.
Devices: Control external devices, and get data from them
Differential: Create ultra smooth motions by working with position and velocity at the same time
DShow9: Audio and Video playback and effects based on Microsofts Direct Show Framework
DX9: High speed DirectX9 based rendering system
Enumerations: Work with enumerated data types
EX9: The High speed DirectX9 based rendering system made more Explicit. So geometry generation is separated from geometry display in the shader.
File: Operations on the file system. Read, write, copy, delete, parse files etc.
Flash: Everything related to the Flash Renderer
GDI: Old school simple rendering system. Simple nodes for didactical use and lowtek graphics.
HTML: Nodes making use of HTML strings local or on the internet
Network: Internet functionality like HTTP, IRC, NetSend, NetReceive
Node: Operations on the generic so called node pins
ODE: The Open Dynamics Engine for physical behaviour
Quaternion: Work with Quaternion vectors for rotations
Spectral: Operations for reducing value spreads to some few values. Summing, Averaging etc.
Spreads: Operations creating value spreads out of few key values. Also spread operations.
Strings: String functions, appending, searching, sorting, string spread and spectral operations
System: Control of built in hardware, like mouse, keyboard, sound card mixer, power management etc.
Transforms: Nodes for creating and manipulating 3d-transformations
TTY: Old school tty console rendering system for printing out status and debug messages.
Value: Everything dealing with numercial values: Mathematical operations, Boolean operations
VVVV: Everything directly related to the running vvvv instance: Command line parameters, Event outputs, Quit command
Windows: Control Windows´ Windows, Desktop Icons etc.