Creating Particle Trails with Time Reversal in Houdini Using VEX | Patreon
https://buymeacoffee.com/faddyvfx/e/335492
In this Houdini VEX code, we create a particle trail effect by storing the positions of particles over time and applying a time reversal effect. The trail attribute is initialized and updated for each particle, storing its position history up to a maximum length defined by the user. When the particle reaches the maximum history length, the oldest position is removed to make room for the new one. The time reversal effect is achieved by interpolating the particle's current position towards the last recorded position in the trail, with a user-controlled reverse_factor to control the strength of the effect. This setup is ideal for creating dynamic motion trails with customizable history lengths and time manipulation effects, adding a more organic, fluid look to simulations in Houdini.