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+--- Thread: spawn towards nearest particle possible? (/thread-684.html)
spawn towards nearest particle possible? - joe_coke - 05-23-2019
I've got 10000 particles scattered on a torus surface. I want to grow splines to join the paricles, however i want to start from 1 particle (or some random ones) and i thought spawning via travel distance from this origin to its neighbours (based on a distance threshold). Is this possible? I intend to spawn from these neighbour particles outwards etc until the torus is covered.
I have tried flocking with rubbish results.
RE: spawn towards nearest particle possible? - joe_coke - 05-23-2019
Ok so i'm now trying to get a fake growth setup to work. I figured i could birth 1 particle then spawn multiple offset a distance using the spread operator. After that i spawned at a rate per sec and tested against a binding absolute distance to keep the particles apart and end up with a nice even (not symmetrical) cover of the surface. Problem is the spawned particles jump position every frame, so i added a test against event time to freeze after they had found a valid position. alas, still plenty of position jumping.
https://www.dropbox.com/s/nsl0lat9en4cfw6/Screenshot%202019-05-23%2017.09.06.png?dl=0
RE: spawn towards nearest particle possible? - tyFlow - 05-24-2019
You can use groups and neighbor tests to simulate growth, and then use those same groups within a spline operator (set to neighbor mode) to bind only between the particles of the growing group.
Attached is an example scene for you to reference.
RE: spawn towards nearest particle possible? - joe_coke - 05-24-2019
that is such a simple solution, thanks for the scene.
RE: spawn towards nearest particle possible? - MonosP - 05-24-2019
That's awesome and thanks for the sample scene, I was about to ask a very similar question when birthing with voxels.
RE: spawn towards nearest particle possible? - joe_coke - 05-24-2019
now, if i wanted to take this further - as the splines snap on with the distance threshold and the paricles not moving.
Could i substitute the distance threshold for maybe a time threshold, so as particles become active in the group the spline can use the variable radius on age instead of length?
RE: spawn towards nearest particle possible? - joe_coke - 05-24-2019
Well i got a little something by adding an intermediate event with some variable time delay and a flocking force.
https://www.dropbox.com/s/qyxxoqrkurf4v08/Screenshot%202019-05-24%2017.45.49.png?dl=0