Bullet's cloth system is no replacement for what Blender currently has and I'm not aware of any available library that we could use without having to do a lot of modifications to make it work.
Am Di., 20. Okt. 2020 um 12:26 Uhr schrieb Brecht Van Lommel via Bf-committers <[email protected]>: > The most important thing for cloth is that you can get it to give good > results in real world cases, and the cloth simulation changes were based on > work done for Agent 327. > https://www.youtube.com/watch?v=jU6-cI-z8HA > > In practice you use smaller time steps and the fast-moving cube will get > collided with anyway. > > Continuous collision detection is great for handling fast-moving objects, > but arguably handling cloth that is nearly at rest and continuously > colliding with the character is a much harder problem. Most cloth > simulation demo videos stop while everything is still in motion, but what > happens after is just as important. > > Anyway, there's definitely much room for improvement here, but it should be > tested on real-world cases. For example from what I've seen, Bullet cloth > is more reliable at high frame rates, but does not produce good results or > wrinkling details when turning up the quality. I've not yet seen an > open-source cloth library that we could just plug in and get much better > results, but it would be great if there was one. > > Some work on cloth collision is being done here: > https://developer.blender.org/D8577 > > On Tue, Oct 20, 2020 at 11:52 AM Ton Roosendaal via Bf-committers < > [email protected]> wrote: > > > Hi Joe, > > > > This is a bit harsh, there have been good cloth contributions to Blender > > by Luca Rood. The current module owner for it is Sebastian Parborg > though. > > > > I'd suggest to connect with them to see what steps forward could be. > > > > We are also in the process of making a good node physics system to allow > > solvers like this in a more generic setting. Design for this is ongoing. > > > > It's super cool to see you want to come back, just give it a bit of time > > to figure out who's doing what now. > > > > Als note that we (including Blender Foundation / Institute) are in the > > process of organizing ourselves much better, including onboarding, best > > practices, engineering standards amd strict requirements for a good > > design process - including the docs. > > > > We lack in a lot of areas, and the consensus is to especially put > > efforts in bringing the current state of the code in control (functional > > and technical specs), before recoding modules entirely. > > > > -Ton- > > ---------------------------------------------------------------------- > > Ton Roosendaal - [email protected] - www.blender.org > > Chairman Blender Foundation, Director Blender Institute > > Buikslotermeerplein 161, 1025 ET Amsterdam, the Netherlands > > > > > > On 20/10/2020 00:30, Joe Eagar via Bf-committers wrote: > > > So, ten years ago I wrote several continuous collision detection > systems > > > for cloth/hair, one of which I tried to push into trunk: > > > > > > https://www.youtube.com/watch?v=QBM3TBKO9w8 > > > > > > And, here's how the cloth sim performs today: > > > > > > https://www.youtube.com/watch?v=5462m9yEkU8&feature=youtu.be > > > > > > If the cloth development process is this dysfunctional (this patch > > actually > > > passed review? > > > > https://developer.blender.org/rB0666ece2e2f96571200d693d9d7bee1ca72d026f > > ) > > > then I propose we eliminate the cloth code entirely and go with a third > > > party lib (Bullet?). > > > > > > Joe > > > _______________________________________________ > > > Bf-committers mailing list > > > [email protected] > > > https://lists.blender.org/mailman/listinfo/bf-committers > > _______________________________________________ > > Bf-committers mailing list > > [email protected] > > https://lists.blender.org/mailman/listinfo/bf-committers > > > _______________________________________________ > Bf-committers mailing list > [email protected] > https://lists.blender.org/mailman/listinfo/bf-committers > _______________________________________________ Bf-committers mailing list [email protected] https://lists.blender.org/mailman/listinfo/bf-committers
