Re: Re: Photo

mat churchill wrote:
> Have now positioned and scaled my custom coastline based scenery and
> aded srtm- 3 data, see coast-withSRTM3.jpg here:
> 
> file://localhost/home/mat/Flightgearweb/index.html

:-)

> This again has been done by hand, but I do now have an idea of how Atlas
> could be used to make this semi - automatic. I want to see how it looks
> with photo scenery draped over it before I proceed in working on a
> method of accurately and quickly aligning photo scenery and custom
> coastline. (to see if there is any point)
> 
> I am however still having a learning curve moment with the difference
> between scenery tiles and the polygons. 
> 
> What I am trying to do is to assign a few test pieces of photo scenery
> texture to my custom coastline.
> 
> 
> The polygon described here is a very large 3d block of landmass several
> miles square, it's file name is for instance 2859777.btg.gz and
> additional text file (2859777.stg) adds further features to the area it
> covers. This polygon has a default scenery texture applied according to
> the one allocated to it when it is built. This can be changed to for
> instance Freeway from Default and then a very large image can be created
> to replace the original Freeway texture which will then cover all of
> this polygon ?
> 
> This hasn't worked for me so far,

Be aware that each polygon type is prioritized.  If you have some other 
polygon defined for the same area that has a higher precidence type, it 
will win out over your freeway.

 > tguserdef has worked fine after I
> modified the xml file pointed out by Jon.
> 
> <PropertyList>
> 
> <polygon>
>   <name>WestPenwith</name>
>   <material>Default</material>
>   <contour>
>    <hole>false</hole>
>    <v>
> -5.47734174757282 50.2169528918023
> -5.47667184466019 50.2169528918023
> -5.4751645631068 50.2147920642248
> -5.47499708737864 50.2148028683627
> -5.4748463592233 50.2148028683627
> ..........etc
> 
> If I change this to Freeway or change the properties of the file it
> creates, the area with the Freeway property does not get built. Also I
> don't understand the relationship between this and the grid of textures
> I see laid over the polygon. It was this grid I used to create my
> original test photo "tile". This was easy, as I could use gimp to
> visually align photo scenery with the grid. 
> I tried creating a 4 x larger rgb texture to see if the grid spacing was
> related to the size of the texture and the texture loads OK, but the
> grid is still the same size. So I'm not sure if I can cover all of the
> 2859777.btg.gz with one texture.
> 
> If so I think I might have misunderstood completely and there is some
> way of referencing each tile on the grid and asssigning it individual
> textures ?

We probably need to modify or adapt an existing tool to do the specific 
task.  The photo tool was an attempt to do something similar, although as 
others have pointed out, it doesn't carry over all the underlying terrain 
vertices, only the ones at it's grid boundaries.

Regards,

Curt.


> Also I tried to use the --useUKgrid option to fgfs-tools server and
> client with no success (tried it with tguserdef just in case too !)
> 
> Hope I've made myself clear on this, any help on this would be greatly
> appreciated
> 
> 
> Regards
> 
> Mat Churchill
> 
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> 
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-- 
Curtis Olson   HumanFIRST Program               FlightGear Project
Twin Cities    curt 'at' me.umn.edu             curt 'at' flightgear.org
Minnesota      http://www.flightgear.org/~curt  http://www.flightgear.org