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Particle Systems

Description

  • A means for of modeling fuzzy objects, such as fire, clouds, smoke, water, etc.

    • Don’t have smooth well-defined surfaces
    • non-rigid objects

  • Term coined by William Reeves who first used particle systems in “Star Trek II”

Modeling

  • An object is not represented by a set of primitive surface elements, but as clouds of primitive particles that define its volume.

  • A particle system is not a static entity, its particles change form and move.

  • An object represented by a particle system is not deterministic, its shape and form is not completely specified. Stochastic!

Advantages

  • Complex systems can be created with little human effort.
  • The level of detail can be easily adjusted.

Basic Model

  • New particles are generated
  • Each new particle is assigned its own set of attributes
  • Any particles that have existed for a predetermined time are destroyed
  • The remaining particles are transformed and moved according to their dynamic attributes
  • An image of the remaining particles is rendered

Demo


If gif not viewable, please checkout the YouTube Link: https://youtu.be/eslsMUzghZ4

Extras

Collision of particles with a static wall

If gif not viewable, please checkout the YouTube Link: https://youtu.be/8bdWzFA6IQ4