[x3d-public] Unity to X3Dom - Bina ryGeometry

[Philipp Slusallek]

Hi,

Just for completeness, I would like to point also to the BLAST format
(published in the same Web3D proceedings as SRC :-). See
https://graphics.cg.uni-saarland.de/2014/blast-a-binary-large-structured-transmission-format-for-the-web/.

It uses the same idea as SRC but is more general (IMHO). It allows to
encode, flexibly de/compress (via code on demand), and stream
arbitrarily complex data structures, including entire scene descriptions
or subgraphs thereof.

It is now the default streaming format we use in XML3D and has already
been integrated also in commercial applications. It could probably also
be used in the context of X3D but we have not really looked into this.

The paper contains detailed comparisons with other formats (not SRC as
it was developed in parallel).


Best,

	Philipp

Am 10.02.2015 um 10:30 schrieb Max Limper:
> SRC can package everything (including the structured info, such as
> stride, primitive type, ...) in one single file.
> The format is documented in the corresponding paper, which is available
> on the page.
> On the SRC page (x3dom.org/src), there are aopt commands documented, as
> well as a very simple writer source code in C++ for download.
> 
> For BinaryGeometry, there is no way to put indices and attributes into
> one file, only multiple attributes can be packed into the same one,
> using the 'i' flag ("interleaved"), if I remember correctly.
> I'd suggest to use SRC, though - it is more flexible, more transparent,
> and competitive with glTF (even a bit more efficient in some regards).
> 
> Regards,
> Max
> 
> 
> On 10.02.2015 04:57, Dave A wrote:
>> I've seen a sample where 3 different binary files are referenced for
>> one object (points, uv's, normals or like that).
>> Is there a syntax where ALL binary data can be put into 1 file, and
>> the elements that need it can index into that file (like glTF can do).
>> It would be nice to reduce the number of files, both for file
>> management sake, and number of server requests.
>>
>> This aopt page talks about how to use aopt, is there documentation of
>> the actual format of this binary data such that I can write my own?
>>
>> Dave Arendash
>>
>> On 2/9/2015 12:39 AM, Max Limper wrote:
>>> Hi Dave,
>>>
>>> cool, thanks for sharing this!
>>>
>>> The demo worked nicely on my machine (using Chromium on Ubuntu).
>>>
>>> Just as a hint for optimization, it should be possible to decrease
>>> the long loading time a lot by using BinaryGeometry.:
>>> http://doc.x3dom.org/tutorials/models/aopt/index.html
>>>
>>> Best,
>>> Max
>>>
>>>
>>> On 08.02.2015 07:27, Dave A wrote:
>>>> Check it out:
>>>>
>>>> http://www.davearendash.com/webgl/x3dom
>>>>
>>>>
>>>
>>>
>>> _______________________________________________
>>> x3d-public mailing list
>>> x3d-public at web3d.org
>>> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>>>
>>
> 
> 
> _______________________________________________
> x3d-public mailing list
> x3d-public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org

-------------- next part --------------
A non-text attachment was scrubbed...
Name: slusallek.vcf
Type: text/x-vcard
Size: 441 bytes
Desc: not available
URL: <http://web3d.org/pipermail/x3d-public_web3d.org/attachments/20150211/a4651b1d/attachment-0001.vcf>