Any suggestion or is there a big limitation here?

Is there an invisible top on the bowl with which the ball collides?

No, it's empty. I've tried with the Poser primitive bowl and I also made one. Same results. I also tried splitting a bowl into 4 sections, to see if it would work like connected ramps, but got the same result as well.

I made a 3 part spiral (bottom, and 2 sides) to see if ball would follw that, same result. I tried that scenerio with the spiral imported in 1 piece, and all pieces imported separately, and all turned out the same results.

Hmmm ... curiouser and curiouser ... :sad:

I tried with several props with various concavities. All behaved as if the physics engine is working only with the convex hull. Worse, the hull includes the Joint-editor center and end points, which are only for orienting the object's coordinate system and have nothing to do with collisions. Weird. Looks half baked to me.

I hope they can fix this at some point, really limits my ideas for the physics engine.

I think Nerd explained that the physics simulations only interact with the convex hulls, in one of his training videos.  Or maybe I dreamed it.  :unsure:  Wherever I heard/read that, I thought it was coming from one of the Inside People or Beta Testers, someone who would know.  It does make it difficult to get any decent collisions from the simulator.  :sad:

For the case with the bowl, maybe you could fake it to get the desired effect.  Cut a copy of the bowl into wedges whose convex hulls, taken together, might approximate the desired bowl shape for collisions.  Then run the sim using those proxy props.  If the sim will still collide with hidden props, you can hide the proxies and keep the bowl visible.

The True Joy of Endless Poser Workarounds is that they help us exercise our creativity, and sometimes maybe help us invent new curse words.  :lol:

If you go to the object menu and click spawn prop from convex hull, you will get an object that is visible that will show what is happening.  A did a test with the primitive bowl and it does have a top. 

If you watch the video about bullet physics it talks about the problem with objects not hitting the target before being deflected. It also says Nerb3D was going to discuss work a rounds in a future video.

My work a round would be to place a bunch of flat planes inside the bowl and use them instead of the bowl.  Each object appears to create its own convex hull.  I just did a test with 5 planes and a ball .  The planes were angled to form a crude bowl and the ball bounced inside it like it was real and not stopping at the top as in your video.

Don't know how you make a moving picture as above, so just remove the .txt

Well I guess I'll have to deal with work-arounds until it get's fixed. It's a shame, the physics are the main reason I purchased it and now I find out how extremely limited I am.

Oh well, I can still manage quite a bit, just requires more work.

Quote - Well I guess I'll have to deal with work-arounds until it get's fixed.

What is broke?

Concave can require multiple algorithims (different point counts, etc) and checks to see which one will work with every one generated. Then there is the issue of how things interact with concave. Kind of tuff to drag and drop that code to the script box that isn't there.

Yes there are programs out there that accel at using convex hulls, but chances are better than good that you have script access to the physics engine in order to use them.

Multi Point convex is very easy to compute, setup, and use. You can do most of it with a mouse.

It would be neat to have full access to Bullet in Poser, you can do a lot with it. It would also open the door for lots of other problems and issues as well.

Once you open the scripting up, point and click is out....

Set the bowl as a soft dynamic, apply a self constraint, set all to 1. Removes the hull and fixes the mesh in place.