This question may not be related to obi.

How do I make an Obi Fluid liquid translucent?

Lowering the alpha of ParticleColor in ObiParticleRenderer will not change the appearance.
For example, if you want to make an appropriate 3D model translucent, create an appropriate material, set REnderingMode to Fade, and change the alpha of Color to translucent.

In the same way, we are seeking to change the Color setting to make it translucent.

How can we describe a very sticky liquid, like oil?

For example, something that takes a very long time to fall when it hits a vertical wall.

First, I set Viscosity to 2, using this page as a reference.
http://obi.virtualmethodstudio.com/manua...rials.html

There was indeed a change, but it is still not enough.

Next, I changed the Gravity of the Buoyancy and Obi Solver so that it takes longer to fall.
These are fine if only a little, but changing them significantly can cause undesirable visual effects, such as slower falling speeds.


Therefore, I would like to know if there are any other parameters other than these that would affect the stickiness if changed.

My use case is that I'm working on my own custom fluid shader. The workflow is tedious: Press Play -> Wait for the simulation until the fluid gets to a certain shape I'd like to inspect the shader for -> Tweak the shader.

I figured that if I dump the mesh from BurstFluidMesherSystem as an Unity asset, it would make iterating on the shader much faster. So I added this API:

When the "Skeleton Sampling" is enabling when generating particles from the softbody blueprint editor, the generated particles since to move along with the bones. My questions are:

1. What's the constraint taking place here? Distance? Pin? Shape matching?

2. Can I disable it? In other words, I'd like the particles to be generated at the positions of the bones, but I'd like them to work just like volume particles and surface particles: bound to other particles by shape matching constraints, but not bound to the bone.

It seems that Obi renderers randomly stop working when the "Pause" button is pressed in Unity editor.



Please take a look at this video. The fluid just disappears and reappears randomly. Sometimes it works sometimes it doesn't.

   

ObiFluid (7.0 in this case) prints a lot of shader warning to the console upon entering the play mode.

I suppose these can be safely ignored. However it's very inconvenient to develop/debug anything when your console is spammed like this.

Typicial warning is:

Shader warning in 'ParticleGrid(Clone)': signed/unsigned mismatch, unsigned assumed at kernel BuildFluidDispatch at ParticleGrid.compute(359) (on d3d11)

One possible solution seems to be adding this in MathUtils.cginc:

#pragma warning (disable : 3203)
#pragma warning (disable : 3206)

But I don't think it's necessarily a good idea, and even if it is I'd hope to get it officially fixed, otherwise I'll have to manually put these lines every time I upgrade Obi version.

Is it possible to just assign a mesh to ObitEmitter and make it emit one particle per vertex? I don't want to voxelize the mesh or anything. Just emitting from each vertex.

Hi, i plan to simulate gluing cloth to a softbody, and glued cloth also can be pulling off.I try to use obi attachment doing this,but it require rigidbody for dynamic attachment, how can i do this without applying rigidbody to obi softbody?Any help would be much appreciated. 

ObiParticleRenderer Obi Solver and Obi Emitter look like grains, not liquid.
Using a blueprint that looks like a liquid and uses "FluidViscosity" And "FaucetAndBucket" in the Sample did not solve this problem.


This Obi Fluid Renderer description may be relevant.
http://obi.virtualmethodstudio.com/manua...ering.html

However, specifying the Emitters placed in the scene in the Particle Renderers of the Obi Fluid Renderer did not change the appearance.


Also, all the Obi Fluid Renderer values for "FaucetAndBucket" in the sample "FluidViscosity" look default.

The API document of ObiSoftbody has this description:

Quote:override void Obi.ObiSoftbody.UpdateParticleProperties()
Recalculates shape matching rest state.
Recalculates the shape used as reference for transform position/orientation when there are no fixed particles, as well as the rest shape matching state. Should be called manually when changing the amount of fixed particles and/ or active particles.