[Jonathan Warner]

Johnny,

Sorry it took me so long to respond, been a crazy week…

Thanks for your advice. Unfortunately that tutorial you recommended wasn’t what I was after (though it was informative). I really needed to flow my liquid inside of a specific hose shape that morphed between “before” and “after”.

In the end, I decided to precompose a long thin rectangle of particles going straight. Then I brute forced that rectangle into shape using Mesh Warp. Luckily, you didn’t need to see that the particles were really “circular” (there were so many it was more of a continuous flow) so you could not tell how much I distorted things. This method worked for this shot.

Of course, I’d still love to be able to shoot particles along a specific path of my choosing and have that path change shape over time…

Thanks again,
Jonathan