SiRpRoHxO Posted November 20, 2019 Share Posted November 20, 2019 (edited) Hello everyone, I've a project where i want to simulate some hair with vellum. The hair should break and fall to the ground over time but i can't get it to work properly. As you can see in my simple example, the breaking is working for the guide hair just fine but resulting in a misbehavior when it comes to hairgeneration itself. The vellum sim is somehow not correctly transferred, resulting in the hair just dissolving... I tried a vellum hair sim without the breaking before and it is just working fine, so i really don't know where the error comes from. I attached a simple example of what i tried; any help is much appreciated Test_Vellum_Groom_simple_hair_drop.hiplc Edited November 20, 2019 by SiRpRoHxO Quote Link to comment Share on other sites More sharing options...
SiRpRoHxO Posted November 22, 2019 Author Share Posted November 22, 2019 Hello again, as I couldn't figure out how to transfer the guide hair to the actual hairgen with the breaking activated, I tried doing the vellum sim right after the hair generation itself. This is indeed working but comes with a slight issue. As you can see, most of the hair is falling down as expected but some haitstrings stay attached to the surface. I really have no clue why this is happening at all as all of the hair should break with a threshold of 0. Please have a look at the right branch of my file. Any help is much appreciated. Test_Vellum_Groom_simple_hair_drop.hiplc Quote Link to comment Share on other sites More sharing options...
Noobini Posted November 23, 2019 Share Posted November 23, 2019 (edited) if you do an extremely simple test case where your hair just hang in midair with no colliders...it works fine, breaking fine. If you then add a collider like a character's head, the scalp, the hairs tend to get stuck and not all would break as you want. In your scene, in vellumsolver2>solver set Collision Passes to 0 set Post Collision Passes to 1 voila...no more hair... vu_AdvancedHairYeahYeah.hiplc Edited November 23, 2019 by Noobini 3 Quote Link to comment Share on other sites More sharing options...
SiRpRoHxO Posted November 23, 2019 Author Share Posted November 23, 2019 wow thank you, it's so easy sometimes; but it would have never occurred to me to do this Good thing is: animating the breaking threshold in the solver is still working, nice. I just hope I can transfer this technique to my actual geo, but so far good work and cheers Quote Link to comment Share on other sites More sharing options...
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