Re: Re : Re: newbie questions

BONNEVILLE David wrote:

>Thanks Curt for your quick answer.
>
>I'll try to compile nurbss with another gcc version.
>
>Could you explain me the way to proceed to build a scenery using HGT files,
>cause TerraGear documentation only makes reference to DEM files ?
>I saw on the net, that HGT files could be 3 arcsec or 1 arcsec resolution. Does
>the procedure remain the same using one resolution or another ?
>
>Thx
>
>David
>
>
>--- Message d'origine ---
>  
>
>>De : "Curtis L. Olson" <[email protected]>
>>À : TerraGear developers discussions <[email protected]>
>>Sujet : Re: [Terragear-devel] newbie questions
>>Date : lun 21 mar 2005 21:54:39 CET
>>
>>BONNEVILLE David wrote:
>>
>>    
>>
>>>Hi there,
>>>
>>>I'm new to FG world. I am looking around tools needed by FG, such as
>>>      
>>>
>>TerraGear.
>>    
>>
>>>I've downloaded it from the website, but i can't compile it on Windows and
>>>      
>>>
>>i
>>    
>>
>>>can't compile it entirely under Linux cause of nurbs++ lib ... 
>>>
>>>* Do you know where i can find a good version of this lib which can work
>>>      
>>>
>>with
>>    
>>
>>>the current version of TerraGear ?
>>>
>>>As I am a newbie in terrain file format, i've looked on the sites listed
>>>      
>>>
>>from
>>    
>>
>>>TerraGear page and google and I saw two different file formats : DEM and
>>>      
>>>
>>HGT
>>    
>>
>>>(http://www.dgadv.com/dgtv/).
>>>I've found HGT (3 arcsec) for my location (France) but no DEM of the same
>>>resolution.
>>>
>>>* HGT looks more accurate, but can TerraGear use it ?
>>>
>>>Maybe you can guide me to a tutorial to understand what TerraGear tools do.
>>> 
>>>
>>>      
>>>
>>Hi David,
>>
>>All the world is modeled and available already for FlightGear.  So if 
>>you just want to fly, you don't need to build your own scenery.  If you 
>>have your own data, or want to do something differently, or just like to 
>>play with the stuff, then please, forge ahead.
>>
>>I believe nurbs++ has some problems compiling with gcc-3.4.x, but 
>>compiles well with earlier versions of gcc.
>>
>>The current flightgear scenery is built from SRTM data (which is HGT 
>>format).
>>    
>>

The procedure is essentially the same.

1. Prep the various world GIS data sources
2. Generate the airport models.
3. Assemble the scenery.

The only difference for the HGT data is that you want to run hgtchop 
instead of demchop to prep the different data source and convert it to 
the terragear intermediate format.

Regards,

Curt.

-- 
Curtis Olson        http://www.flightgear.org/~curt
HumanFIRST Program  http://www.humanfirst.umn.edu/
FlightGear Project  http://www.flightgear.org
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