" type="cite"> Manta is not really supported on windows.  If you output the images straight to a file it might be ok, but the interactive viewer won't work.  As for the acceleration structure, that's not the full problem.  Another issue is that you need to load all the triangles into memory in order for the acceleration structures to work, but if you're doing something out-of-core, then by definition that's not possible.  An out-of-core solution would require a preprocessing step on your mesh to put it in a form that can then be loaded in pieces as rays need it.  Perhaps each piece is a smaller BVH...  Finally you'd have to have some way to evict BVHs once you start running out of memory.  To be honest, if you need out-of-core ray tracing, chances are you either have way too little RAM and need to spend a few hundred dollars and buy more RAM (8GB is dirt cheap) or if it really is a massive mesh, then simplifying it to use less triangles.

Thiago

On 10/10/12 2:04 PM, Kaveh Rassoulzadegan wrote:

" type="cite"> Dear Carson,

You guys are so cool, thanks !
Much thanks also for the info about vis tools paraview, visit and for manta takin in NRRD, I am definitely checking this out !

Kindest regards and all the best,
Kaveh

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Dear Thiago,

First of all I feel very happy to have Thiago himself to give me a hand on this. Much thanks for your precious contributions.

Tons of thanks for letting me know about ply and obj, you are saving me precious hours here.
I was painfully trying to have manta to build on windows this afternoon, not getting yet why some stuff won't compile.
Mega-tons of thanks for the info about out-of-core. I was fearing such kind of answer, I guess I am ok for a "couple" of deep readings about bvh's and octree's. If you feel like for some favorite data structure for storage and access on a view dependent basis, please share.

Kindest regards and thanks again for your message,
Kaveh

On 10/10/2012 8:21 PM, Thiago Ize wrote:

" type="cite"> Hi Kaveh,
Manta is able to read obj and ply files.  Examples for that are here: http://mantawiki.sci.utah.edu/manta/index.php/Trianglesceneviewer
You could also look at the source code for one of the mesh readers, located in Model/Readers and modify it to load your own triangle format.  As for out-of-core, Manta doesn't have any support for that, so you would need to extend Manta to handle this.

Thiago

On 10/10/12 5:26 AM, Kaveh Rassoulzadegan wrote:

" type="cite"> Hello,

Much thanks for this splendid ray-tracer.

I would like to find a good out of core visualization of massive data solution and think manta could do but I could not find much information on how to turn my dataset (either triangles or density fields) into a manta one.

Sorry but I am an acceleration structure / BVH ultra-noob. Could you provide an hint on where to get started in order to bake data for manta ?

Much thanks for your help.

Kindest regards,
Kaveh Rassoulzadegan