Fluid Source surface node

Automatically scales the volume bounds based on the Edge Location, Feather Length and Sample Distance provided.

Set’s the output volume to be an SDF.

Inverts the output volume.

Controls the sample resolution of the volume and specifies the voxel size in world units. Lower values will increase the resolution. Higher resolutions allow for finer detail in the appearance of the object. However, doubling the divisions requires eight times the memory.

Global volume scale.

Extra padding added to volume bounds. Measured in world units.

Sets the container’s border value. Some fluid operations (such as collisions) expect negative border conditions to work properly. This value enforces a certain bound value.

The exact minimum point to surface will be found and used to build the initial SDF. The resulting field is not signed and is used to generate a shell around the geometry.

Scales the result by the sampled point Source Attribute.

Only available when Minimum Distance is turned off. In that case, Ray Intersect is used to build the SDF and more information is available to distinguish the interior from the exterior of the object.

The volume offset measured in world units relative to the sampled edge of the object. With Minimum Distance this is similar to Edge Thickness because the SDF only holds positive values. In that case, the value can only be increased. Without Minimum Distance, an exact new edge position can be calculated, enabling the object to grow or shrink.

The amount of outwards feather to apply, measured in world units relative to the Edge Location. This softens the volume edge outwards. Using Minimum Distance, this value sets both the inward and outward feather.

The thickness of the edge in world units. This is only available with Minimum Distance turned off.

The amount of inwards feather to apply measured in world units relative to the Edge Location. It softens the volume edge inwards and is only available with Minimum Distance turned off.

Enables the Feather Out Ramp.

Enables the Feather In Ramp. This is only available with Minimum Distance turned off.

Remaps the outward feather volume values.

Remaps the inward feather volume values. This is only available with Minimum Distance turned off.

Creates a volume with the help of an SDF approximation, sampling all the available points. Using this option does not require a Source Attribute. If disabled, the attribute sampling method will be used.

This is only available when Generate SDF From Points is enabled. It scales the result by the sampled point Source Attribute.

Number of points to sample information from. The more points used, the smoother the result. The total weight contributed by points to the cell are normalized if it is greater than the threshold. If the weight is less than the threshold, the particle attribute values will not be normalized and hence drop to zero. This means that for every voxel, enough points need to be available to sample from based on the Sample Distance provided.

The maximum distance to extrapolate point information from. Higher values result in a bigger volume.

Only available when Generate SDF From Points is turned on. Controls the volume feather based on the volume position defined by Sample Distance.

Defines the edge of the volume relative to the Sample Distance provided. A smaller value usually results in a smoother volume.

Enables the use of noise.

The amount of influence turbulence noise has on the previously created volume.

How much influence the cellular pattern has on the previously created volume.

How fast the noise moves. Higher values result in slower movement.

Controls how to blend the generated noise on to the volume. Additive adds, and Multiplicative multiplies. In most cases, additive returns a more dynamic source showing larger internal differences. The final result is always pre-multiplied.

Controls the contrast of the turbulence pattern generated. If Adaptive Cells are enabled, this value controls to great extend how the cellular pattern looks. Higher values result in more warped cells.

Magnitude of turbulence applied.

The amount of influence added bands of Turbulence have, relative to the initial Elements Size.

Levels of turbulence to apply relative to the the initial Element Size. For smoother transitions, use lower values.

Offsets turbulence pattern.

Initialized (base) element size, measured in world units. The value is derived from frequency, ie: 1/FQ.

Controls how to blend the generated noise on to the volume. Additive adds, and Multiplicative multiplies. In most cases, additive returns a more dynamic source showing larger internal differences. The final result is always pre-multiplied.

Inverts the cellular pattern.

Changes the Cell Size based on the generated turbulence pattern. Lower turbulence values result in smaller cells, creating a more organic pattern. This enforces a relationship between the two noise types.

Specifies the border width of the cells.

Offsets the cellular pattern.

Controls the contour of the cells. Lower values result in a sharper cell representation.

The global cell size measured in world units.

Only available when Adaptive Cells is turned on. Controls the minimum cell size. If the pattern becomes too noisy, increase this value.

Only available when Adaptive Cells is turned on. Controls the maximum cell size. The closer this value is to the Minimum Distance, the more uniformly shaped the cells will become.