FieldGrid

The FieldGrid node samples the input field at points in a grid and stores it internally. The output is a linear interpolation of the grid. This node is useful if you have a field which is slow to compute. You can add a FieldGrid to bake it down into a grid. The grid might be slow to create, but the resulting field can be much faster, although less accurate. FieldGrid will rebake the grid whenever the input field changes.

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
Input	fld	The field to which you intend to apply the grid.

Control (UI)	Knob (Scripting)	Default Value	Function
FieldGrid Tab
Grid Container	gridContainer	Field3d	Specify the type of grid to apply.
Count	xcount, ycount, zcount	10, 10, 10	Specify the size of the grid. The maximum size is kMaxFieldSize.
Bounds	bounds	x = -0.5, y = -0.5, n = -0.5, r = 0.5, t = 0.5, f = 0.5	Specify the bounds of the grid.
Set bounds from input	set_bbox	N/A	Select this button to set the bounds based on the size of the field connected via the fld input.
Display Tab
Draw Bounding Box	preview_bounds	off	Draw the bounding box of the field if it has one.
Draw Preview	preview_on	off	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.