> generators

Explode

generators/explode·v1.5.1

IN:2 OUT:1

SUMMARY

The Explode partitions a polygonal mesh into pieces and creates one packed point per piece, carrying its position, rest frame and bounds, so every POPX operator after it moves the pieces as instances. Pieces come from each primitive, from clusters of primitives around seed points, or from a Voronoi Fracture that cuts the mesh along the cells of the seeds.

Seeds are scattered on the mesh or supplied on the second input, Voronoi Fracture keeps open surface shells or caps solid, watertight shards from a closed mesh, and Fuse Pieces joins each piece into one connected surface. The rest frame is built from the surface normals with an optional custom up vector, and POPX Reorient can adjust it without rotating the pieces.

PARAMETERS

PAGEExplode

[+]Partition Method	Partitionmethod	Determines how the geometry is split into pieces.
[+]Voronoi Fracture	Fracturemode	Surface Shell makes open Voronoi patches. Solid Pieces makes capped, watertight shards and needs a closed mesh.
Fuse Pieces	Fusepieces	Merges the points each piece shares, so every piece is one connected surface. Points on the border between two pieces stay separate.
[+]Scatter Method	Scattermethod	Determines how the seed points are scattered: Per Primitive, Volume (Non-Deterministic) or Volume.
Number of Clusters/Cells	Numberofclusters	Number of scattered seeds, as clusters or Voronoi cells. Not used when the seeds come from the second input.
Clusters/Cells Seed	Clustersseed	Sets the random seed of the scattered clusters or cells.
Max Neighbors	Maxneighbors	Number of nearby cells tested per triangle. Use 8 or more for Solid Pieces.
[+]Cell Size	Cellsize	Stretches the Voronoi cells in each axis. A value of 1 on every axis gives regular cells.
Visualize Pieces	Visualizepieces	Display each piece with a unique color.
Visualization Seed	Visualizationseed	Numerical value that initializes the random piece colors.

PAGEOrient

Generate Vertex Normals	Generatenormals	Enable generating vertex normals.
Max Number of Primitives per Point	Maxprimsperpoint	Used to allocate temporary storage, it should be set to the maximum number of primitives a point can be a part of in the input geometry.
Angle	Angle	For vertex normals, the threshold angle between faces above which the shared edge vertices don't share normals.
Compute Source Orient	Computesourceorient	When on, each piece's rest frame is built from the surface normals. When off, the identity frame is used.
Use Custom Up Vector	Usecustomupvector	Use Custom Up Vector as the up of the frame instead of deriving it from the normal.
[+]Custom Up Vector	Customupvector	The up direction used for the piece frames.
Invert N	Invertn	Enable flipping the N direction.
Invert Up	Invertup	Flip the up direction by 180 degrees.

PAGECommon

Free Extra GPU Memory

Freeextragpumem

Free memory that has accumulated when output memory has grown and shrunk.

INPUTS

Input 0 POP - Geometry

Input 1 POP - Cluster/Voronoi Seeds

OUTPUTS

Output 0 POP - POPX Geometry