r-a-n-d-o-m Posted March 8, 2020 Share Posted March 8, 2020 (edited) Hello, How do you control the birth rate of particles based on the velocity of the source object. So if source object (eg broken wall pieces) stop moving, I don't want particles to spawn there anymore. My emission type is set to POINTS (so I can't use the Emission Attributes). I also have no RBD objects in my DOP network, only POP SOURCE, POPSOLVER, POPOBJECT. How do I grab the velocity and use it in the birth rate field? I also made an @emitSpeed attribute in SOPs. Which works, it goes to zero if the source points stop moving. But I can't write 1000*@emitSpeed in the Const. Birth Rate field. regards r-a-n-d-o-m Edited March 8, 2020 by r-a-n-d-o-m Quote Link to comment Share on other sites More sharing options...
Navneet Arora Posted March 9, 2020 Share Posted March 9, 2020 you can isolate the source points before feeding them to pop solver, would be easier , or just create an attribute by taking a sop solver inside ur dopnet and use that as emission criteria. Regards. Quote Link to comment Share on other sites More sharing options...
KM07 Posted March 9, 2020 Share Posted March 9, 2020 Check in POP SOURCE Emission Attribute Quote Link to comment Share on other sites More sharing options...
r-a-n-d-o-m Posted March 12, 2020 Author Share Posted March 12, 2020 hmm not what I want. Quote Link to comment Share on other sites More sharing options...
KM07 Posted March 15, 2020 Share Posted March 15, 2020 On 3/12/2020 at 2:29 AM, r-a-n-d-o-m said: hmm not what I want. Particle Birth rate based on velocity source 1 Quote Link to comment Share on other sites More sharing options...
r-a-n-d-o-m Posted March 20, 2020 Author Share Posted March 20, 2020 thx ! Quote Link to comment Share on other sites More sharing options...
lobao Posted October 15, 2020 Share Posted October 15, 2020 Very nice, and I couldn't do it. I calculated the velocity of my emitter, changed it to scatter and added the attribute v for emission. Even so it is not emitting only when it moves. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.