[Bf-gamedev] Scientific Visualization with BGE - DeDaLo

[Mike Erwin]

I worked on point cloud support last summer for architectural viz firm
Floored. That was in blender the modeler, not BGE really. Rendered as
simple GL_POINTS with diminishing size based on distance. Biggest model we
had was 17 million points (position + color) which ran ~20 fps on a decent
laptop.

Mike Erwin
musician, naturalist, pixel pusher, hacker extraordinaire

On Wed, Mar 25, 2015 at 7:44 PM, <miroslavhorvath at email.cz> wrote:

> Hi Roberto,
>
> how many points approximately should BGE handle? What should be a point
> visual representation (dot,cube,sphere)? Will these points be of a regular
> grid shape or have random position?
> Currently I'm working on a visualization of point clouds as result of
> smoke particles calculations in OPENFoam. I had to involve LOD system,
> streaming(libload) and spatial partitioning of the scene and I'm able to
> visualize over 2 milion points, represented either as cubes(at far
> distance) or "halo" faces with various colors(at close distance), where at
> the close distance it has to be possible to click on a point and get some
> information. I haven't tried more than 2milion, but I believe BGE could
> handle even more. This project should be done in two months so I hope I'll
> be allowed to showcase it publicly.
>
> Regards,
>
> Miro
>
> --
> Miroslav Horváth
> miroslavhorvath at email.cz
>
>
> ---------- Původní zpráva ----------
> Od: Roberto Casalegno <roberto.casalegno at b2fh.org>
> Komu: bf-gamedev at blender.org
> Datum: 25. 3. 2015 17:58:02
> Předmět: [Bf-gamedev] Scientific Visualization with BGE - DeDaLo
>
> Hello everybody,
>
> with the help of some contributors (B2FH <http://www.b2fh.org>, ASAIP
> <https://asaip.psu.edu/>), I am working on a project for scientific
> visualization of Big Data, in particular for astronomy.
> The project is called DeDaLo (shortly described here
> <http://www.b2fh.org/DeDaLoProject/tabid/507/Default.aspx>), and will
> help scientists to work in real time with 3D data sets.
>
> We are using Blender and python, and are really interested in the BGE
> future.
> At the present our effort is only on developing a demo of what DeDaLo can
> do, there are no resources to work on BGE code itself.
>
> After this premise, I would ask you about a feature I've read of here
> <http://blenderartists.org/forum/showthread.php?256512-Unlimited-Detail-in-the-BGE>:
> Point Cloud for BGE. To display hundreds of thousands points is something
> complex, and if you have meshes (faces), it's almost impossible. Is there
> any proposal about Point Cloud in GE?
>
> Thank for your time,
> Roberto
>
> --
> _______________________________
> NAM| Roberto Casalegno
> SKY| casalegno.roberto
> PHO| +39 335 6837810
> FAX| 1782719301 (Italy)
> WEB| www.b2fh.org
> TZO| GMT+1
> _______________________________
>
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