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Stretching verts uniforml...
Forum: Obi Softbody
Last Post: josemendez
Yesterday, 04:32 PM
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Scripting rod forces
Forum: Obi Rope
Last Post: chenji
11-09-2025, 01:15 PM
» Replies: 25
» Views: 3,015

Burst error causing crash...
Forum: Obi Rope
Last Post: josemendez
10-09-2025, 07:03 AM
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Controlling speed of emit...
Forum: Obi Fluid
Last Post: josemendez
06-09-2025, 06:29 AM
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Looks nice on editor but ...
Forum: Obi Fluid
Last Post: josemendez
04-09-2025, 07:20 AM
» Replies: 3
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How to Shorten or Scale t...
Forum: Obi Rope
Last Post: josemendez
02-09-2025, 09:53 AM
» Replies: 5
» Views: 842

The Limitation of Using O...
Forum: Obi Rope
Last Post: josemendez
01-09-2025, 10:30 PM
» Replies: 1
» Views: 579

Bug Where a Straight Segm...
Forum: Obi Rope
Last Post: josemendez
01-09-2025, 08:46 PM
» Replies: 1
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Having an issue with obi ...
Forum: Obi Rope
Last Post: Ben_bionic
29-08-2025, 04:23 PM
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Non-uniform particle dist...
Forum: Obi Rope
Last Post: chenji
29-08-2025, 09:05 AM
» Replies: 4
» Views: 887

Plastic Deformation Capable?

Posted by: peterson79 - 26-06-2019, 04:53 AM - Forum: Obi Softbody - Replies (3)

	Hello, is it possible to simulate plastic, clay, metal, deformation with Obi Softbody? For example dropping a rock into clay or bending metal? Thanks!

ClearTasks / GetPointCloudAnisotropy

Posted by: yoke_sune - 25-06-2019, 07:57 AM - Forum: Obi Cloth - Replies (24)

Hi,

We've been experiencing a bug with Obi for the past few weeks. It is really hard to reproduce, but sometimes it happens out of the blue. It mostly happens in scenes where we have two solvers. Sometimes at startup, sometimes when we're instantiating a GameObject with an ObiCloth.

The stack trace indicates the issues is with GetPointCloudAnisotropy, but this method is only used in the SoftBody script, which we're not using. I even tried to comment the line in Oni.cs but it is still trying to call it. Here is the stack trace:

0x00007FFE554D0805 (libOni) ClearTasks
0x00007FFE554D6FF5 (libOni) ClearTasks
0x00007FFE55504399 (libOni) GetPointCloudAnisotropy
0x00007FFE5550A28A (libOni) GetPointCloudAnisotropy
0x00007FFE5550A579 (libOni) GetPointCloudAnisotropy
0x00007FFE5552D470 (libOni) GetPointCloudAnisotropy
0x00007FFE876D7E94 (KERNEL32) BaseThreadInitThunk
0x00007FFE887CA251 (ntdll) RtlUserThreadStart

Do you have any indications of what this could be caused by? Our timestep is 0.04 and the max allowed timestep is also 0.04, which works fine for our simulations.

We're running Unity 2019.1.7 and we're using HDRP, but that shouldn't affect Obi(?).

Best,
Sune

Console Support

Posted by: TimLewis - 24-06-2019, 03:33 PM - Forum: Obi Fluid - Replies (2)

Hey Obi team,

We're currently using both Obi Fluid and Obi Rope for a game releasing 2020, and we're currently talking with Sony to port onto PSVR.

I have read elsewhere that you plan on supporting PlayStation and Xbox and I'd like to ask where you're at with this, what the complications regarding console are, and if these are something that is within DLLs or source code?

Is there a contact I could have a more detailed chat with this about? It'd be great if I could go into more detail on a non public forum Gran sonrisa

Thanks for all the work you're doing!

Tim

I need to config rope

Posted by: jirawatball - 24-06-2019, 07:17 AM - Forum: Obi Rope - Replies (7)

	this is my config. https://www.youtube.com/watch?v=LX28L1sfU8Y it so soft i need it stronger. and this thing i want. https://www.youtube.com/watch?v=ehUyS_2_ke4

Tearing Cloth manually with ParticleInActor.indexInActor...

Posted by: jabza - 23-06-2019, 09:02 PM - Forum: Obi Cloth - Replies (1)

Hey,

I am seeing some issues trying to manually 'Tear()' a ObiTearableCloth, upon detecting a collision via the ObiSolver OnCollision event.

I'm using the following method:

Code:
    private void HandleSailCollision(object sender, Obi.ObiSolver.ObiCollisionEventArgs e) {

        foreach(Oni.Contact contact in e.contacts) {

            if(contact.distance < 0.01) {

                Collider collider = ObiColliderBase.idToCollider[contact.other] as Collider;

                ObiSolver.ParticleInActor pa = sail.Solver.particleToActor[contact.particle];

                if(collider.tag == "Projectile" && pa.actor == sail) {

                    (sail as ObiTearableCloth).Tear(pa.indexInActor);

                    break;

                }

            }

        }

    }

This works, and Tear() is called with a valid particle index (I've also confirmed this is the index I'd expect, based on the collision - center of the Mesh), however the Tare() call fails. Triste

I can confirm the Logic flows through the following code, and that the particle to be Torn has invMass > 0. It is the following 'Oni' call - TearDeformableMeshAtVertex, that appears to be rejecting my Tear request (both calls to it return false). I'm not really sure on the inner workings of this, perhaps it is to do with 'updatedHalfEdges'?

Code:
        if (invMasses[splitIndex] == 0 ||

            !Oni.TearDeformableMeshAtVertex(deformableMesh,splitIndex,ref v1,ref normal,updatedHalfEdges,ref numUpdatedHalfEdges))

        {

            // Try to split the other particle:

            int aux = splitIndex;

            splitIndex = intactIndex;

            intactIndex = aux;

            v1 = transform.worldToLocalMatrix.MultiplyPoint3x4(solver.positions[particleIndices[splitIndex]]);

            v2 = transform.worldToLocalMatrix.MultiplyPoint3x4(solver.positions[particleIndices[intactIndex]]);

            normal = (v2-v1).normalized;

            if (invMasses[splitIndex] == 0 || 

                !Oni.TearDeformableMeshAtVertex(deformableMesh,splitIndex,ref v1,ref normal,updatedHalfEdges,ref numUpdatedHalfEdges))

                return;

        }

For context I am using a local space solver with world space ObiColliders.

My ObiTareableCloth has the following settings:
[Image: 888IDhw.png]

(I've set tearRate to 0, to ensure no 'miss-firings' and so Tears only happen when I explicitly call it)

Thanks again for the support, much appreacited!

This mesh causes "Index was outside the bounds of the array"

Posted by: cubrman - 22-06-2019, 11:27 AM - Forum: Obi Cloth - Replies (7)

	Please check this mesh: https://drive.google.com/file/d/1hlYs6T7...sp=sharing when I try creating topology for it I get an error:

Obi Fluid 2D - Flipping Camera Horizontal Axis

Posted by: docgonzzo - 22-06-2019, 01:55 AM - Forum: Obi Fluid - Replies (1)

Greetings! Gran sonrisa

I wanted to implement a "Camera Flip" mode where left is right and right is left etc. but the controls remain the same

Below is what I ended up with. It gets attached to the main camera.

Everything still works and looks fine, except the 2D fluid is now invisible.

Hoping to get some hints on where i'm going wrong.

Thanks!

Code:
//attached to MainCamera

public bool flipHorizontal; //toggle me on/off

void OnPreCull()

    {

        camera.ResetWorldToCameraMatrix();

        camera.ResetProjectionMatrix();

        Vector3 scale = new Vector3(flipHorizontal ? -1 : 1, 1, 1);

        camera.projectionMatrix = camera.projectionMatrix * Matrix4x4.Scale(scale);

    }

    void OnPreRender()

    {

        GL.invertCulling = flipHorizontal;

    }

    void OnPostRender()

    {

        GL.invertCulling = false;

    }

FishingRod and SmoothCursor?

Posted by: ayoci - 21-06-2019, 03:49 PM - Forum: Obi Rope - Replies (1)

hi. Sonrisa

Obi Rods suitable for FishingRods(bending, custom 3d model)?

And

I'm calculating the rope stretch with:

Code:
stretch = rope.CalculateLength() - rope.RestLength;

if 0 or negative the rope not stretched, but if i use

Code:
cursor.ChangeLength(rope.RestLength + hookExtendRetractSpeed * 15 * Time.deltaTime);

I want to simulate the opened reel when stretch > 0

My Stretch value goes extremely high. my default stretch when i'm moving with the rod 0.1-0.2 but if i use Cursor this value goes between: 0.8-!!16!! and my rope breaks instant. I'm using it wrong? Or ObiRope has smoothCursor? Sonrisa

Rod in Rigidbody

Posted by: Evgenius - 21-06-2019, 08:59 AM - Forum: Obi Rope - Replies (6)

	Hello again! If I add Gameobject of rod as a child to gameobject with rigidbody, it (object with rigidbody) flies away and jumps around. Why is that and how could it be fixed? (Collisions in solver are disabled and rod don't even touch anything)

Kitepower simulation

Posted by: kitepower - 21-06-2019, 08:49 AM - Forum: Obi Rope - No Replies

	Hello, we from Kitepower.nl need help with implementing a dynamic kite simulation in unity using obi rope or filo. If you are interested please write to jobs@kitepower.nl Cheers Johannes

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