Disintegration

Introduce

This is a particle FX I made with Houdini. The sheep skull and its texture are from internet resources.

Break Down

Description

The effects contains 3 parts,  they are “skull”, “cubes”, and “particle”, as the images shown blow.

1. Skull

The skull is “cut” by taking another animated object (in this case is a box). It has had noise applied (mountain), and I put “”$T” in the offset box, so the noise is animated as well.

2. Cubes

When the cube  is cutting the skull, it also creates a touch surface between cube and skull. I extract this surface from “Boolean” node. Under the  “Output Primitive Group “, check the box “B inside A”. Then I got the touch surface (a primitive group) as shown as blow:

Scattering the surface and copy with cubes in random scale.

3. Particle

The particle part is also based on the touch surface.

In addition, in POP network, I also adjusted the “Life values”, so I got a decay information in the points. Every point has start time and end time. Based on age and life values, I can control the particle’s scale, from large (start) to small (end).