[Radiance-general] 3D-360 video rendered with Radiance

[Mark Stock]

Greg,

The mesh is the set of computational elements for the fluid
simulation, and, yes, a lot of the effort went into creating a dynamic
mesh refinement and re-coalescence algorithm.

Make sure to download the mp4 when you get your hands on a
GearVR---the quality through YouTube leave a lot to be desired, though
it does give some of the feeling of being enveloped by this writing,
grey mesh.

Mark

On 7/1/16, Greg Ward <gregoryjward at gmail.com> wrote:
> This is really impressive, Mark!  I'll have to try it out next time I have
> access to a GearVR.  Did you create your own dynamic meshing algorithm?
>
> -Greg
>
>> From: Mark Stock <mstock at umich.edu>
>> Date: June 30, 2016 9:16:27 PM PDT
>>
>> Folks,
>>
>> I thought I'd let you know about my recently-completed 4-minute 3D-360
>> video that was rendered with Radiance. The subject is a dynamic
>> triangle mesh from a computational fluid dynamics simulation of a
>> sphere of fluid with a density discontinuity. (Lots of grey
>> cylinders.)
>>
>> The original (2D rendering) video is here:
>> https://www.youtube.com/watch?v=OShSC1VyBi0
>>
>> The new video (3D-360, for GearVR and other VR HMDs) is in multiple
>> places:
>> https://www.youtube.com/watch?v=zGFMqEKiAGM
>> https://vimeo.com/173000788
>> https://www.facebook.com/mark.stock/posts/10153805081796376
>>
>> I'll provide a direct download link for all you Radiance fans, who
>> know how hard this actually was:
>> http://markjstock.org/vr/MarkStock_SmokeWaterFire_UHDlo_360_TB.mp4
>>
>> The rendering took 8 months on a 4.4GHz, 8-core Intel Haswell chip.
>> Each original frame was 11520x11520 (in HDR, of course), but reduced
>> to 3840x3840 for storage, and further reduced to 3840x2160 for
>> publishing. In all, almost 1 Terapixel of primary rays were traced.
>> The directory takes up ~600 GB. I used an rcalc/rtrace trick to
>> generate the 3D-360 frames. The command line for each frame looked
>> like:
>>
>> cnt 11520 11520 | rcalc -f 3d360.cal -e
>> "XD=11520;YD=11520;X=0;Y=0;Z=0;IPD=0.02;EX=0;EZ=0" | rtrace -ab 2 -aa
>> 0 -ad 32 -as 0 -dj 0.7 -ds 0.06 -u+ -dv- -x 11520 -y 11520 -n 3 -fac
>> scene0695.oct > img_0695temp.pic
>>
>> I attached the 3d360.cal file in case anyone else is interested.
>>
>> Have fun, and good night!
>>
>> Mark
>