Yon Posted September 11, 2016 Share Posted September 11, 2016 I am using the inherit velocity from point velocity option on the packed object. Which applies v from the sop path on the first frame. But my geo becomes active later in the frame range. What's a efficient way to update the velocity? I know I could bring the centroids into a sop solver and attribute transfer v onto my geo but I have had a bad experience with the sop solvers haha and am wondering if any1 has a better idea for this thx Quote Link to comment Share on other sites More sharing options...
Atom Posted September 11, 2016 Share Posted September 11, 2016 (edited) You could try a CHOP delay node then calculate velocity based upon the delayed transformation. In this setup I have the sphere move 2 units over 24 frames, however the particles do not start to emit until frame #26. Inside the CHOP the delay is set to 26 frames so the velocity from frame #1 starts on frame 26 and the particles are set to inherit it. ap_delayed_particle_velocity.hiplc Edited September 11, 2016 by Atom 1 Quote Link to comment Share on other sites More sharing options...
mestela Posted September 11, 2016 Share Posted September 11, 2016 Here's another way: 1 Quote Link to comment Share on other sites More sharing options...
Yon Posted September 12, 2016 Author Share Posted September 12, 2016 thanks for the help guys, learned from both. Comparing @active of the previous frame to the current to trigger when velocity is applied solved the continuous problem I wasn't aware I would run into when posting ^^ Quote Link to comment Share on other sites More sharing options...
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