(18-03-2019, 01:21 PM)icl92 Wrote: When i try the SpringRod sample scene,the Obi rod works fine, but when i try to create a new obi rod game object and simulate the same effect it does not work. I even tried copying all the components of the Obirod game object from SpringRod sample scene and the output was not the same.

I have attached the screenshots from the unity scene  with this post.

How can i properly use the obi rod component inside Unity.

kindly waiting for the reply.

(18-03-2019, 01:21 PM)icl92 Wrote: When i try the SpringRod sample scene,the Obi rod works fine, but when i try to create a new obi rod game object and simulate the same effect it does not work. I even tried copying all the components of the Obirod game object from SpringRod sample scene and the output was not the same.

I have attached the screenshots from the unity scene  with this post.

How can i properly use the obi rod component inside Unity.

kindly waiting for the reply.

(18-03-2019, 02:11 PM)icl92 Wrote: Now Even the rope to rope collision in the freight lift is not working, is there any issue with the new obi rope 4.0.2 plugin.

Example : https://www.youtube.com/watch?v=Ih7A_Wc_sRo

I have tested on unity 2018.1.8f1 & 2018.3.6f1.

Please help me out. I am not understanding what is the issue, tried to create new project and reimported obi rope and still the rope to rope collision in fright life is not working.

(18-03-2019, 01:38 PM)josemendez Wrote: Hi,

Make sure all per-particle properties of your rod are the same as the examples. The sample rod has fairly high rotational mass, so the particles offer more resistance to rotation.

kind regards,

(18-03-2019, 02:31 PM)josemendez Wrote: No, there's no issue with 4.0.2. That video shows a modified version of the sample scene, specially set up for collision detection.

By default the amount of particle collision constraint iterations and substeps is too low, because it is not needed in most cases.

(19-03-2019, 09:32 AM)icl92 Wrote: Hi,

I created a new  new Obi rod (3DObject->Obi->ObiRod(fully set-up) and copied all the components from the Obi rod Example, the physics did not work.

(19-03-2019, 08:06 PM)Hi,Thank you for the reply. Wrote: We want to simulate the following cable twisting effect using obi rod.


https://www.youtube.com/watch?v=bxjSZji1sGA


The Obi rod example already has the above effect, the only issue is, if we change any variable the simulation fails.

Is there any documentation explaining all the properties required for the obi rod , at-least a tutorial how to simulate the obi rod twisting example.


The final output which we are trying to achieve is to combine multiple cable and perform twisting on them.


Example : https://www.youtube.com/watch?v=vvG-lPYfzcY


We want to know, Can we use multiple Obi rod using same obi solver for combined cable twisting.

Is there any tutorial or post explaining how to simulate the the obi rod twisting effect using two wires, are any parameters to be taken care for the collision to work.


The Final Output will be as shown in the Below image






Kindly waiting for your reply.



josemendezHi,

Sorry but we're unable to reproduce this. It works just fine for us. Can you specify exactly what does not work?

Note that the sample scenes often tweak per-particle attributes to get the desired stiffness (particle masses and rotational masses, specifically). Creating a rod from scratch won't yield the same results as the ones in the sample scenes. To increase rod stiffness (resistance to bending), increase your particle's rotational mass.

Same goes for particle phases. Phases dictate which particle-particle and particle-collider contacts are pruned, and which ones progress to actual collisions. Make sure your rope particles are set up in different phases, or they will ignore collisions with each other. See:

http://obi.virtualmethodstudio.com/tutorials/collisions.html

(22-03-2019, 08:32 AM)josemendez Wrote: Hi,

What do you mean by the simulation "fails" if you change any parameter?

Yes, you can use ObiRods to simulate twisting of multiple cables. Collision detection will take place between particles that have different phases, or the same phase if the actor has the "self collisions" checkbox enabled. See the manual for more info on how  to setup collisions and inter collisions:

http://obi.virtualmethodstudio.com/tutorials/collisions.html

Regarding particle editing and fixing, see:
http://obi.virtualmethodstudio.com/tutorials/particleediting.html
http://obi.virtualmethodstudio.com/tutorials/attachments.html