VRML - Re: How to understand GeoVRML ? Was: Nurbs

Author

Re: How to understand GeoVRML ? Was: Nurbs > Vrml converter

Joerg Scheurich aka MUFTI

2004-09-20, 12:17 pm

> whats this mufti...so there IS something that you dont know.....bout
> vrml.........this the first in so many years of
> comp.lang.vrml....

There is a lot, i do not know about VRML.

Anything about VRML is in ISO/IEC 14772/2002

http://www.web3d.org/x3d/specificat..._IEC_14772-All/

but if you do not understand the text, you are lost 8-(

For me, the missing part is

http://www.web3d.org/x3d/specificat...cepts.html#4.15

unfortunatly, i am not a geodesist/land surveyor 8-(

Can someone tell me, what is needed to do, when i would begin to add
GeoVRML support to white_dune ?

so long
MUFTI
--
Muschelfluchtabfolge
(Stichwort: Shell escape)

Joe D Williams

2004-09-20, 12:17 pm

Hi Mufti,
Please also look at:

http://www.web3d.org/x3d/specifications/
ISO-IEC-19775-FDIS-X3dAbstractSpecification/
Part01/components/geodata.html

in addition to all of the VRML97.

How about ...
it is like an elevation grid,
only it is a geoid. :)

Thanks and Best Regards,
Joe

"Joerg Scheurich aka MUFTI" <rusmufti@helpdesk.rus.uni-stuttgart.de> wrote in
message news:cimh9s$9rq$1@infosun2.rus.uni-stuttgart.de...
>
> There is a lot, i do not know about VRML.
>
> Anything about VRML is in ISO/IEC 14772/2002
>
> http://www.web3d.org/x3d/specificat..._IEC_14772-All/
>
> but if you do not understand the text, you are lost 8-(
>
>
> For me, the missing part is
>
>
http://www.web3d.org/x3d/specificat...rt1/concepts.ht
ml#4.15
>
> unfortunatly, i am not a geodesist/land surveyor 8-(
>
> Can someone tell me, what is needed to do, when i would begin to add
> GeoVRML support to white_dune ?
>
> so long
> MUFTI
> --
> Muschelfluchtabfolge
> (Stichwort: Shell escape)

Joerg Scheurich aka MUFTI

2004-09-20, 7:17 pm

> http://www.web3d.org/x3d/specifications/
> ISO-IEC-19775-FDIS-X3dAbstractSpecification/
> Part01/components/geodata.html

Thanks, this is a bit more than in 14772, but it still do not teach much
about how to handle this projections. A geodesist simply know it 8-(

> How about ...
> it is like an elevation grid,
> only it is a geoid. :)

It requires a lot of much imagination, to see projections of different
ellipsoids as a elevation grid 8-(

| Internally, a X3D browser will transform all geographic coordinates into
| earth-fixed geocentric
| coordinates, i.e. an (x,y,z) displacement from the center of the earth in
| units of metres.

If there would be known functions to do this, then it is possibly not
more difficult than handling a elevation grid.
Unfortunalty, there i no Open Source to do this 8-(

so long
MUFTI
--
Muschelfluchtabfolge
(Stichwort: Shell escape)

Joerg Scheurich aka MUFTI

2004-09-24, 12:21 pm

satyendra verma

2004-09-28, 7:27 am

> > whats this mufti...so there IS something that you dont know.....bout
>

> There is a lot, i do not know about VRML.
>
> Anything about VRML is in ISO/IEC 14772/2002
>
> http://www.web3d.org/x3d/specificat..._IEC_14772-All/
>
> but if you do not understand the text, you are lost 8-(
>
>
> For me, the missing part is
>
> http://www.web3d.org/x3d/specificat...cepts.html#4.15
>
> unfortunatly, i am not a geodesist/land surveyor 8-(
>
> Can someone tell me, what is needed to do, when i would begin to add
> GeoVRML support to white_dune ?
>
> so long
> MUFTI

yup i can...i got into vrml only for the "geo" part
and got hooked...but really its a whole wide world there...id
suggest..improve white dune to make it easier to edit vrml
file......your getting into "geo" may make vrml loose one the
brightest guys...you..!!

regards
satyendra verma