(10-05-2021, 10:26 AM)davidsedrakyan Wrote: Hello! I own asset obi fluid, and I'm wondering is there any way to get few particles, for example, 3 particles and place them with your fluid shader, I just need some sort of blob/raymarching effect on 2 spheres, maybe you can give me some advice how to use that. I need to get this kind of effect

(10-05-2021, 10:35 AM)josemendez Wrote: Hi there,

You can just create a blueprint with capacity 3 (or any other low number). At runtime you can set their positions to whatever values you like using the particle API. See: http://obi.virtualmethodstudio.com/tutorials/scriptingparticles.html

(10-05-2021, 10:49 AM)davidsedrakyan Wrote: Thanks a lot, and also one "advice", if you have time, you can make some kind of fake ray marching thing with your shader and techniques me and lots of guys like me will buy that asset, just for having that kind of effect out of the box!

(10-05-2021, 10:52 AM)josemendez Wrote: What do you mean by "fake raymarching"? Isn't exactly that what the fluid renderer does already?

Ray marching works by generating a distance field of the fluids surface (or any other surface), then "marching" along a ray and calculating the distance to the closest point on the surface using its distance field. Once you hit the surface, you get its depth along the ray, surface normal, and any other info you need for rendering. This is done at least once per pixel.

Obi's fluid renderer generates the fluids surface by smoothing particles in screen space and generating a fullscreen normal+depth buffer, which is what the output of ray marching would look like. So this is quite literally "fake raymarching" since the results are similar to ray marching, but arrived at in a much cheaper and faster way.

(10-05-2021, 11:07 AM)davidsedrakyan Wrote: Yes, It does the same, I was saying just to have that kind of ray marching shader effect without fluid feature, just separated from the obi fluid asset!

For example, we can't move any particle from unity scene view, but it will be pretty handy to have that kind of feature, just to add shader for example on sphere and get that mixing-raymarching effect

(10-05-2021, 11:08 AM)josemendez Wrote: Oh I see! so you mean to separate the fluid renderer from the fluid simulation itself as a separate package right?

Could be done, I'll think about it

(10-05-2021, 10:35 AM)josemendez Wrote: Hi there,

You can just create a blueprint with capacity 3 (or any other low number). At runtime you can set their positions to whatever values you like using the particle API. See: http://obi.virtualmethodstudio.com/tutorials/scriptingparticles.html

(25-07-2021, 08:24 PM)davidsedrakyan Wrote: hey, I'm trying to achieve this effect, but I generally need kind of 3D Object with collisions and rigidbodies to use as a single "blob" material, do you have any idea how I can achieve that? Would be perfect If I can use some fluid shader on unity basic sphere, or cube , but I understand that it's not possible, is there any workaround ?