Particle Disintegration

Particle Disintegration of a Lion Statue

Rendering:

Houdini Version: 20.5.278

Renderer: Karma CPU

Avg. Render Time: 2.4 min/ frame

Resolution: 1920 X 1080

Number of Lights: 2 (Spot Light, Environment Light) 

Primary Samples: 25

Min Secondary Samples: 1

Max Secondary Samples: 9

Light Sampling Quality: 3

Technical Breakdown

Particles Source – Pyro Source Spread

I used the temperature attribute in Pyro Source Spread to create the particle source and to delete the geometry for the disintegration effect. 

For more control over how the attribute spreads, I used multiple animated geometries to create the starting point.

Method for adding points in different areas to pyro spread: https://deborahrfowler.com/HoudiniResources/ParticleExampleDisintegrationPyroSourceSpread.html 

 

Image A
Image B

Image A: Particle Source

  • Delete Node
  • Delete based on temperature
  • Deleted by expression so that the particle source was only at the edges of the spread, rather than continuously emitting

Image B: Deleting Geometry

  • Deleted geometry using the temperature attribute that is spread

Scatter Node to create the points that particles will emit from

POP Net

Adding Forces:

  • POP Force
    • Amplitude
      • Keyframed to get larger over time
  • POP Collision Detect
    • Ground Plane
    • Lion Geometry
      • Peak Node (by -0.01)
  • Static Object 
    • Ground Plane
  • Pscale 
    • POP Wrangle
      • Pscale decreases with the lifespan of the particle 
      • Initial pscale = 0.025