Field Noise
Generates a flow field (FlowField) from curl noise. It takes the curl of a potential function (2-octave fbm of valueNoise), so the result is a flow of vortices only, with no sources and no sinks. The time phase is Speed × deltaTime integrated every frame, and the Offset input is added on top of it.
- Scale — the spatial scale. Clamped to 0.25-16, default 3. The larger it is, the finer the vortices. The strength of the field is also proportional to Scale (the output is
curl × 0.02 × Scale) - Speed — how fast the phase advances. Clamped to -4 to 4, default 0.5. Negative values play in reverse
- Offset — a value added directly to the phase (
Offsetinput port /offsetInput). Not clamped - Seed — an integer. When a node is newly created it is a random number determined automatically from the runtime value (a saved value is restored as is)
The output resolution is 1/4 of the global resolution. The field is a low-frequency signal, so it is built light on the assumption that the consumer reads it with bilinear filtering. The format is RGHalf (signed; the values are “displacement in UV space per second”).
To increase or decrease the strength, place a Field Scale after it.
Video
Input ports
| Port ID | Type |
|---|---|
Offset | float |
Output ports
| Port ID | Type |
|---|---|
Flow | FlowFieldOutput |
Scriptable members
| Path | Type |
|---|---|
offsetInput | float |
currentScale | float |
currentSpeed | float |
currentOffset | float |
currentSeed | int |
Synapse Apps (scripting)
await synapse.modules.create({ type: "FieldNoise" })
