Voronoi Fracture

Updated: 3 Feb 2025

Fracture the parent mesh into voronoi chunks

Example .dfx

Method #

This node fractures the parent mesh into chunks using Voronoi fracture. A set of seed points is generated within the parent mesh, and the Voronoi graph is generated from those points and used to split the mesh. The chunks are then capped to make them solid. Further deformers may be used to move the resulting chunks.

Generation of closed chunks depends on the quality of the input mesh. The mesh must be closed, manifold and clean to give the process the best chance of working. Meshes with overlapping polygons, vertices that are not welded, or internal faces will likely fail to generate closed chunks. “Surface Only” mode will work even on meshes which do not fit this criteria.

Parameters

Attributes

These properties control the core behaviours of the node.

Parameter	Details
Mode	The fracture mode. Solid : Solid, closed chunks are generated. Surface : Only the polygons in the parent mesh are fractured and output.
Point Distribution Mode	The method by which the seed points are distributed. Random : Points are distributed at random. On Surface : Points are concentrated on the surface of the mesh.
Voronoi Points	The number of seed points.
Seed	The random seed used for seed point generation.
Colour By Voronoi Point	The resulting vertices are coloured by their voronoi chunk index.

Inputs

Name	Description	Typical Input
Cut Material	The material to use for the new faces generated by the voronoi cuts.	Material
Points Bounding Box	Bounding box input for where to allow point generation.	Bounding Box
Generated Weightmap	Add a weightmap to vary the strength of the deformer across the surface.	Generate Weightmap
Transform Modifiers	Apply the transforms of another node to this node.	Null
Target Node	Modifiy the rotations of the node to always direct the z axis towards the input.	Null
Local Transform Override	Apply the transforms of another node to this node, relative to its parent.	Null