Voronoi on Solid

Dependencies

This node requires both SciPy and FreeCAD libraries to work.

Functionality

This node creates Voronoi diagram on a given Solid object. The result can be output as either series of fragments of the shell of Solid object (series of faces), or as a series of solid bodies.

Note: this node uses FreeCAD’s functionality of solid boolean operations internally. This functionality is known to be slow when working with objects defined by NURBS surfaces, especially when there are a lot of sites used. Also please be warned that this functionality is known to cause Blender crashes on some setups.

Inputs

This node has the following inputs:

• Solid. The solid object, on which the Voronoi diagram is to be generated. This input is mandatory.

• Sites. List of points, for which Voronoi diagram is to be generated. This input is mandatory.

• Inset. Percentage of space to leave between generated Voronoi regions. Zero means the object will be fully covered by generated regions. Maximum value is 1.0. The default value is 0.1. This input can consume either a single value per object, or a list of values per object - one value per site. In the later case, each value will be used for corresponding cell.

• Spatial-> Populate Solid

• Number-> Number Range

• List->List Main-> List Length

• List->List Struct-> List Levels

• Viz-> Viewer Draw

• Text-> Stethoscope

Parameters

This node has the following parameters:

• Mode. The available options are available:

  • Surface. The node will split the surface (shell) of the solid body into regions of Voronoi diagram.

  • Volume. The node will split the volume of the solid body into regions of Voronoi diagram.

  The default value is Surface.

• Flat output. If checked, output single flat list of fragments for all output solids. Otherwise, output a separate list of fragments for each solid. Checked by default.

• Accuracy. This parameter is available in the N panel only. Precision of calculations (number of digits after decimal point). The default value is 6.

Outputs

This node has the following outputs:

• InnerSolid. Solid objects (or their shells, if Surface mode is used) calculated as regions of Voronoi diagram.

• OuterSolid. Solid object, representing the part of volume or shell, which is left between the regions of Voronoi diagram. This object will be empty if Inset input is set to zero.

Examples of usage

Inner solids with Surface mode:

• Generator-> NGon

• Transform-> Move

• Solids-> Polygon Face (Solid)

• Solids-> Revolve Face (Solid)

• Solids-> Solid Viewer

• Spatial-> Populate Solid

• Viz-> Viewer Draw

Outer solid for the same setup:

Inner solids with Volume mode:

Outer solid with Volume mode: