FieldVolume

The FieldVolume node allows you to load in an OpenVDB volume file. The resulting field is the direct sampling of the volume values. If the file contains more than one grid, you can choose which one to sample. The field type will depend on the type in the VDB file: signed distance for OpenVDB Level Set grids, or density otherwise.

Note:  This is a LABS node, indicated in Nuke with the tag:
LABS nodes are experimental and not intended to be used for production.

Inputs and Controls

Connection Type	Connection Name	Function
No inputs.

Control (UI)	Knob (Scripting)	Default Value	Function
FieldVolume Tab
File	file_name	N/A	Load in an OpenVDB volume file.
Grid	grid_index	N/A	Select the grid index.
Reload	reload	N/A	Reload the file if it has changed.
Display Tab
Draw Bounding Box	preview_bounds	off	Draw the bounding box of the field if it has one.
Draw Preview	preview_on	on	Draw a rough preview of the field.
Preview Opacity	preview_opacity	0.5	The opacity at which to draw the preview.
Scale	preview_scale	1	A value by which the field is multiplied before drawing. You may need to increase this to display faint volumes for example.
Offset	preview_offset	0	A value added to the field before drawing (after scaling).
Detail	preview_detail	1	The detail level at which the preview is drawn. Large values are more accurate but slower to draw.