Tinker Code

A step closer to particle surfaces

Hi all 🙂

Last night I finished the implementation of surface refinement for particles, this allows to increase the resolution of the mesh for smoother surfaces. I still need to redefine my current surface evaluation from particles because I’m getting the wrong isosurfaces 😛 but still I could show you my progress.
This will be useful not only for particle fluids but also for the whole particle system (Newtonian,Boids,Keyed), that’s why we plan to release first the fluid particles engine independently from the surface generator very soon 🙂

here´s some screenshots:

particle iso surface resolution of 1
particle iso surface resolution of 1
particle iso surface resol 2
particle iso surface resol 2
particle iso surface resol 3
particle iso surface resol 3
particle iso surface resol 4
particle iso surface resol 4

10 responses to “A step closer to particle surfaces”

  1. manuel Avatar
    manuel

    great thing. it’s really fun to visit your blog once in a while and see all the progress.

    I’ve got one tiny question. Let’s say if I used this fluid particle system with the famous ‘fill glass with liquid’ setup, would the generated surfaces show up smooth when being rendered or show little steps like the elbeem fluids do at rather high or medium resolutions?

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  2. farsthary Avatar
    farsthary

    @manuel

    It should be smooth , but that is heavilly dependant on the implicit function used, if the function is more metaball like , then it will be smoother but other options are aviable, this is an active field of research

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  3. ZanQdo Avatar
    ZanQdo

    That looks great Raul, I usually just add a couple smooth modifiers to the geometry at the end to achieve the final adjustments :)Thanks for the updates!

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  4. manuel Avatar
    manuel

    Thanks for your quick answer. I am looking forward to see the progress.

    i imagined it like:
    http://graphics.stanford.edu/courses/cs348b-competition/cs348b-09/finals/wine.png (where fluid and glass mesh meet) or maybe here http://area.autodesk.com/th.gen/?i/u4pbn-b1vap-d9z54-wejev:720×0.jpg (nparticles SPH)

    something i found. maybe you already know or it’s not related to your project: http://levelofdetail.wordpress.com/2007/09/28/screen-space-meshes/

    @ZanQdo:
    Yeah, that’s what I do too. I smooth the mesh (smooth modifer) and then (depending on the resolution of the simulation of course) use a subsurfaces Modifier. But if you use a rather high-res sim in e.g. a cylinder shaped glass you get you get visible steps which need to be smoothed a lot and if you smooth it too much it can look odd too. I have experimented with a duplicated, slightly scaled glass duplicate and a boolean modifier, to cut off those steps but this can result in nasty edges when rendering an animation.

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  5. me Avatar
    me

    Does this type of simulation model capillary action?

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  6. RH2 Avatar
    RH2

    This stuff has many uses beyond particles.

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  7. Max Puliero Avatar
    Max Puliero

    I think that the best way to use your SPH would be with metasphere, also in maya and XSI is the right way 🙂

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  8. Dennis F. Avatar
    Dennis F.

    Does that mean, blender will generate a surface based on particles geometrical position-data?
    Sorry i don´t understand 😀

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  9. Ruddy Avatar
    Ruddy

    Hi Dennis,
    Yes, if Stephen, Farsthary and Janne manage to do that, you will be able to simulate fluid in blender in a similar way than Realflow (http://www.realflow.com/), that is to say without being constrained by a domain for your simulation
    –> very convenient when you spread fluid all over your scene, as it would require a “huge” domain size with the current flow simulator (too cpu hungry)
    regards

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  10. mobile samsung Avatar
    mobile samsung

    End of thread. No more comments.

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