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Channel Modifiers

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NoiseChannel Noise

This motion generator creates smoothly changing random value by taking a 1D slice through a 3D fractal noise field.

Input: x-coordinate for slice

: y-coordinate for slice

: scale time to make z-coordinate for slice

Seed: random start time to move z-coordinate

: number of 'octaves' of noise to add together

Frequency Ratio
: ratio of frequencies of successive octaves

Amplitude Ratio
: ratio of amplitudes of successive octaves

Amplitude: Scaling factor for the output

Offset added to the output



OscillatorChannel Oscillator

This modifier can be considered more of a motion generator, since it simply generates the standard sine wave so common in nature. When applied to a channel, this modifier creates smoothly undulating values. Use a 'Channel Noise' generator for a more random effect.

Amplitude: Size of base waveform without damping. The channel will range from -amplitude to +amplitude.

: Frequency of wave in cycles per second (Hz)

: Phase shift for wave in form of a percent of a wavelength/cycle (i.e. 90 deg shift = 90/360 = 25%)

: Damping amount for wave expressed as fraction of amplitude lost per cycle

: A 'DC' offset added to the wave. The value will range from 'offset - amplitude' to 'offset + amplitude'.



Channel RelationshipChannel Relationship

The 'Channel Relationship' modifier defines a non-linear relationship between two values that can be visually modified using a Graph curve. Unlike a standard direct link where, once applied, modifying the incoming channel instantly affects the outgoing channel, once a relationship is linked, the relationship itself must be defined numerically in the Relationship interface window that appears in the 3D viewport. This only appears when the 'Channel Relationship' item itself is selected.

Relationships are defined via the buttons in the window, the two channels are listed as Driver and Driven, meaning the values of one output (Driver) are controlling the input of another (Driven). The white square button sets a relationship key based on the current Driver and Driven values. The arrows jump between keys and the red x deletes the current key. The 'Graph' button opens the graph editor for further curve refinement. These videos will demonstrate the use and application of the Relationship Modifier-

 Relationship Basics
 Firehose Demonstration




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