Hello everyone
I am using Obi Rope for a crane simulation. However the rope doesn't react the way I want it to. I am using the lowest amount of particles which is 2. However we make it so we adjust the rope length, and every time I change the length, it adds particles and it looses the stiffness which makes the crane act weirdly because of the rope. Is there anyway I can make it so, it doesn't add more particles when I change the rope length via code? The attachment shows the way I have my ropes. and it's parameters.

Hello Obi,

Sometimes when I generate distance fields, they look strange in the preview. Namely there are artefacts that are not close to the mesh. I checked in blender that the mesh does not have holes. Have you seen this before?

pic:

  Screen Shot 2019-04-10 at 4.50.05 PM.png (Size: 16.82 KB / Downloads: 19)

Hello Obi,

I've been trying very hard to remove tunnelling effects on mesh collider with mediocre results.

The tunnelling is happening consistently for sharp objects or at sharp points of objects.

Things I've tried:

- increase cloth particle count. The cloth is a plane of about 3000 particles.
- reduce gravity
- use distance field. decreased max error
- increase obi solver distance iterations = 24, collision iterations = 17
- increase obi collider thickness

Here is a picture of the tunnelling on a chair mesh:

[attachment=328]

Any help would be greatly appreciated!

This is how it looks without obiCloth
The cloth weight is transferred from the rigged character as I followed from the TrenchCoat Example.

*Final IK + Grounder has been used



Once I attached the ObiCloth this happens.



This is how I set up based on your tutorial webpage

Obi Solver on the Character Root
Obi Cloth on the Skinned Mesh Object

*Player Object is a root





Setting on the Animator on the root (Player) 

What I used
- Obi Slover
- Final IK FBBIK
- Grounder



This is the Script Execution Order



Please Help! I try to solve this problem for a week but I can't.
Thank you in advance!

Hello.
I did a simple test using Obi Cloth Proxy.
I chose a plane for source object and a sphere for target object.

Result

Deformation worked great as I had expected. But the shading of the deformed sphere was somewhat awkward (not smooth enough). It seems that something is wrong with normals.
Is there any way to fix this?

Thanks!

Is there a way to make a softbody really bouncy? I'm trying to make a ball bounce on a softbody and I want the ball to not lose velocity when it hits the rigidbody.

I am not an expert at all in physics. but what defines the attributes, of a softbodie. I know normally outside softbodies, we use rigidbodies to define, mass/weight, etc. what makes the softbodies over all attributes. like how soft something is, can you inflate things like a tire, can you make things more bouncy. only thing that changed most of the charactistics for me was the friction of an object, but that just made it slide or not slide on surface. maybe I need to reread the documents. but some things don't make sense yet.

How to attach a rope to softbody and how to make the rope can interact with softbody ?

Hi guy's,

I'm a AR/VR developer for industrial applications.
We bought ObiRope 4.0.

i would like to highlight a touched particle with a Controller.
I see in patchNote 3.3, exactly what I want in thread :  Per Particle Color & Thickness.
http://blog.virtualmethodstudio.com/2018...whats-new/

Is there an example of per particle scripting coloration ? 

Thanks.

BTW : Really nice package !

Here original code from ObiRope
public override void RegenerateRestPositions(){

            var distanceBatch = DistanceConstraints.GetFirstBatch();
            if (distanceBatch.ConstraintCount > 0)
            {
                // Iterate trough all distance constraints in order:
                int particle = -1;
                int lastParticle = -1;
                float accumulatedDistance = 0;
                for (int i = 0; i < distanceBatch.ConstraintCount; ++i)
                {
                    if (i == 0)
                    {
                        lastParticle = particle = distanceBatch.springIndices[i * 2];
                        restPositions[particle] = new Vector4(0, 0, 0, 1);
                    }
                    accumulatedDistance += Mathf.Min(interParticleDistance, principalRadii[particle][0],principalRadii[lastParticle][0]);
                    particle = distanceBatch.springIndices[i * 2 + 1];
                    restPositions[particle] = Vector3.right * accumulatedDistance;
                    restPositions[particle][3] = 1; // activate rest position
                }
            }

            PushDataToSolver(ParticleData.REST_POSITIONS);
        }
First: this code generate (distanceBatch.ConstraintCount-1) float[3] arrays while Mathf.Min function, this makes unity garbage collector crazy.
Second: lastParticle  newer updated in cycle, this result in accumulatedDistance sum of distances from rope start to current point, not from previous to current point.
So finally accumulatedDistance  contains not total rope length but (distanceBatch.ConstraintCount-1)*ropeLength/2.
Are you sure that is right, because this is strange.
This is my implementation
public override void RegenerateRestPositions(){
            ObiDistanceConstraintBatch distanceBatch = DistanceConstraints.GetFirstBatch();
            if (distanceBatch.ConstraintCount > 0)
            {
                Vector3 right=Vector3.right;
                // Iterate trough all distance constraints in order:
                int lastParticle = distanceBatch.springIndices[0];
                float accumulatedDistance = 0;
                restPositions[0] = new Vector4(0, 0, 0, 1);
                for (int i = 0; i < distanceBatch.ConstraintCount; ++i)
                {
                    int particle = distanceBatch.springIndices[i * 2 + 1];
                    accumulatedDistance += Mathf.Min(interParticleDistance, Math.Min(principalRadii[particle][0],principalRadii[lastParticle][0]));
                    var ditanceoffset = right * accumulatedDistance;
                    restPositions[particle] =new Vector4(ditanceoffset.x,ditanceoffset.y,ditanceoffset.z,1);
                    lastParticle = particle;
                }
                PushDataToSolver(ParticleData.REST_POSITIONS);
            }
        }