MSPhysics 1.0.3 (16 October 2017)

Anton_S · 26 Mar 2017, 02:46

Nice! If you change joint solver model to iterative 64 passes, the wobbling should be reduced by a bit.

pilou · 26 Mar 2017, 06:49

Found this!

ecati · 26 Mar 2017, 18:17

I modeled it as shown in the picture, but I could not move it as I wanted. Can you help me.

Anton_S · 26 Mar 2017, 18:47

Ecati, the reason it doesn't work as expected is that the collision generated for the concave group is improper. You must divide the concave group into sub convex groups. Use convexify by fredo6 to do it for you. The link to the plugin is at the main post. Also, to see the actual collision generated for shapes, enable the Collision Wireframe in MSPhysics Simulation UI.

pilou · 26 Mar 2017, 20:32

Testing traditional thing!

Arch was made with the crazzy Convexify by Fredo!

As convexify don't keep gaps you must use Exploded view ;by CPlassais and me!
Carving by Joint Push Pull by Fredo

ecati · 26 Mar 2017, 21:55

Thank you for your reply. The cylindrical piece moves up when I press play, what could be the reason?

SynSuka3D · 26 Mar 2017, 23:09

Anton_S · 27 Mar 2017, 01:52

Hi, Ecati,

@ecati said:

Thank you for your reply. The cylindrical piece moves up when I press play, what could be the reason?

I answered that in my prior post.

Generally there are two ways to do it.

Divide the concave thingy into convex sub-groups. Using Convexify plugin by Fredo6 should do it for you. You must ensure that the group you divide is initially a solid group. You can use CleanUp along with Solid Inspector by ThomThom to help you fix it. Then once the group is divided, the collision should generate properly. I did it for you, so you can see what I mean: ruffler çizim - way1.skp
A more advanced approach is to have the model rely on joints and have the collision be ignored. I'm not going to explain it in depth, but basically you utilize the curvy joint to have the cylinder move along the curve. If you enable the joints layer, you will see it. Here is the model: ruffler çizim - way2.skp

Regards,
Anton

ecati · 27 Mar 2017, 07:39

Hi, Anton,
I am thankful to you. Thank you so much.

Anton_S · 27 Mar 2017, 07:48

Hey, y'all,

I just made a tutorial on making collision based and joint based copy-able chains. It's in Russian, but a picture is worth a thousand words...

Here is the chain model basing on collision:
https://drive.google.com/open?id=0B3qg8f4WrNdHTWFYOWtkZ3g0RUk

Here is the chain model basing on joint connections:
https://drive.google.com/open?id=0B3qg8f4WrNdHU2NxYnNWTXgxLWc

So, if you're interested in making chains, you should definitely check it out.

-- Anton

faust07 · 27 Mar 2017, 08:56

The tutorial is not only interesting for chains. I can imagine the use for other purposes. Everything that hangs and dangles ... Particularly interesting are the comments on the copiable joints. Thanks!

SynSuka3D · 27 Mar 2017, 19:48

erreur Masse !!!! v1.0.0
no reset position ! big masse

Anton_S · 28 Mar 2017, 00:58

@synsuka3d said:

erreur Masse !!!! v1.0.0
no reset position ! big masse

There are two types of buttons to end simulation: one is reset and the other one is stop. If you press the stop button, the group positions will not reset. If you press the reset button, group positions will reset. No I'm not sure if it was an error or you pressing the wrong button. A sample model that causes that error would be appreciated.

Edit: Oops, I didn't know it was an gif animation, not just an image. So, yes, assigning huge masses results in an error. I will ensure that this is fixed in the final release of 1.0.0. Thanks for the report.

delchrys · 29 Mar 2017, 14:43

Anton,
I have another question.
I made my animation by exporting to multiple jpg's with the msphysics plugin.
I also created some scenes for zooming in on the parts also exported them to jpg's.
With makeavi I then combined the two exported still sets to create a movie.
So that's working now.
Ultimately I want an overview of the instalation with a bit of walking around. Then fly in the gripper tool. See it attach to the pipe by closing the gripper and putting in the pin. Then rotating it with the msphysics animation. Then zooming out to overview.
So I was guessing to use a dynamic component in the scenes and activating it by clicking on the parts. But unfortunately the dynamic parts won't work in de scène builder.
So how am I going to accomplish this?

Can I create some more hinges and actions in msphysics. For instance a slider to push the upper pin in and out and another hinge for turning the gripper around the bottom pin?
This way I must use some of the same hinges for different purposes. Is that even possible? Maybe I can use servo motors. And trigger them by button presses.
Hope you can help me out a bit. Really like to make a nice animation altogether.

Kind regards Bert Broek.

Anton_S · 30 Mar 2017, 09:31

Hello, Bert,

@delchrys said:

Ultimately I want an overview of the instalation with a bit of walking around. Then fly in the gripper tool. See it attach to the pipe by closing the gripper and putting in the pin. Then rotating it with the msphysics animation. Then zooming out to overview.

It can be done with MSPhysics, but it won't be simple. It will require adding scripts and other things... I would suggest you use Animator by Fredo6 for animations and camera transitions. It also allows rendering your animations with Thea Render and some other modern rendering programs, which is what you ultimately want.

@delchrys said:

Can I create some more hinges and actions in msphysics. For instance a slider to push the upper pin in and out and another hinge for turning the gripper around the bottom pin?

Yes!

@delchrys said:

This way I must use some of the same hinges for different purposes. Is that even possible? Maybe I can use servo motors. And trigger them by button presses.

And yes, that is possible. I will upload your model with such features tomorrow.

Regards,
Anton

delchrys · 31 Mar 2017, 17:35

@anton_s said:

Hello, Bert,

And yes, that is possible. I will upload your model with such features tomorrow.

Regards,
Anton

Wow, that would be great. I'm still trying to inderstand which of the items should be placed within a group and which ones outside the group. Slowly getting there.

ITman496 · 9 Apr 2017, 08:25

I have not updated this plugin in a very long time, and have recently done so. I have a problem, though. When I click the double back arrow, the model does NOT snap back to its previous state, it acts as if I paused the simulation. I have checked the 'undo on stop' checkbox in the ui, and it does not affect it. What can I do?

Anton_S · 9 Apr 2017, 15:06

Hello, Daniel,

I'm currently working on 1.0.0 and it may address this issue. So, you can wait a bit until I release it. But so we're sure it's fixed, I would appreciate if you PM me the model that causes that.

Regards,
Anton

ITman496 · 9 Apr 2017, 17:25

it must be some kind of conflict on my end, as every model, even a brand new file, causes it. It appears that msphysics has trouble 'undoing' anything. I reverted to an older version and the reset simulation command works again, but if I have 'hide joints' checked, it hides them, but doesn't unhide them. I'm not sure what could be happening.. If you don't have any ideas, I guess I'll just try to reinstall sketchup / my plugins.

Anton_S · 9 Apr 2017, 20:08

I think I know what's going on. It could be that when installing MSPhysics some files failed to overwrite. I suggest you delete MSPhysics and AMS Library from the plugins folder and do a fresh install. The details are listed in the main post.