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The Volume Rasterize operation takes a curve and creates a VDB volume based on it. It has been designed to complement Draw Curve SOP since it will use point attributes created by the Stroke SOP such as
stroke_pressure, but will work with a standard curve created using a Draw Curve. It will create the needed attributes with default values of 1. The volumes created are based on the Output parameters.
The point attributes
density are used to control the generated volume. They are derived from
stroke_pressure that are created by the Draw Curve/Stroke SOPs. If missing, it will create those values at default value of 1.
If missing stroke point attributes this asset will create default ones set to 1.
Type of volume created. Color creates a float density field and a vector 3
Cd field. Mask creates a float density field. SDF creates a float signed surface field.
Size of the voxels of the created volume
Fast Composite (Color Output)
Multiple volumes are merged together with their densities unaffected. When off the volumes are combined according to their density which is treated like an alpha channel.
Fast Rasterize (Mask Output)
Density field multiplier.
Distance used to sample the curves.
Falloff of the density over the length of the stroke curve.
Strength of the density created over the length of the stroke curve.
Merge Method (Mask Output)
Specifies which operation is used when merging multiple curves densities.