+- tyFlow Forum (https://forum.tyflow.com)
+-- Forum: tyFlow Discussion (https://forum.tyflow.com/forum-1.html)
+--- Forum: General Discussion (https://forum.tyflow.com/forum-2.html)
+--- Thread: particles growing along the surface of trees (/thread-2987.html)
particles growing along the surface of trees - walterlee - 03-10-2022
I tried to animate particles growing along the surface of trees. Mainly used the “find target” operator to make. But there are some problems. First of all, only some particles will find the target, while the other part seems to be blocked by something. Moreover, the "control by time" option in the “find target” operator does not work properly. Using time control will make the particles unable to bind to the tree surface.
This is my test file, thank you.
https://drive.google.com/file/d/1pLouSw0YWuFR9Oh-vN27gQnU7Rc_Y--E/view?usp=sharing
RE: particles growing along the surface of trees - tyFlow - 03-14-2022
Control by Time is not what you want to use here, because it's a position-based control that won't work well with operators that expect particles to be moved around with forces.
The reason particles are getting stuck is just due to the nature of the geometry....forces are attempting to move particles in certain directions, but the topology of your Object Bind mesh causes them to snap back to the same spot or get stuck on creases/edges, making them appear to freeze in place. This is mostly caused by the fact that your branches are all separate elements, so particles are getting stuck on the edge of one element and are not able to jump to the next. You can overcome this issue (mostly) by converting your tree to a single element (ex: with a tyMesher in blobmesh mode). That way all topology will connect in a single surface and particles won't get stuck as easily...but there still will be some that do get stuck...for those you could manually cull with a Select operator.