Re: [sumo-user] Retrieve edge shape via TraCI

[Alexander Brummer <alexander.brummer@xxxxxx>]

Hi Jakob,

Thank you for your answer.

I am already querying the lanes' shapes (for a different purpose). Just 
for the current requirement, the edges' shapes would have been helpful.

So, I guess I'll just go with the lanes or query the net.xml directly.

Best regards,
Alex

On 5/4/22 16:38, Jakob Erdmann wrote:
> The function traci.lane.getShape  is part of the standard TraCI API 
> (though I'm not sure if Veins has exposed this yet).
> If you really need the original edge reference line, there is some 
> geometry code in sumo which you could use to compute it from the lane 
> shape (utils/geom/PositionVector::move2side)
>
> regards,
> Jakob
>
>
> Am Di., 3. Mai 2022 um 13:45 Uhr schrieb Alexander Brummer 
> <alexander.brummer@xxxxxx <mailto:alexander.brummer@xxxxxx>>:
>
>     Hi Jakob,
>
>     Thank you for your suggestion.
>     However, the sumolib is a Python library and thus (usually) only
>     accessible from Python code, right?
>
>     Of course, I could also use any kind of C++ XML parsing library and
>     parse the net.xml file myself. I would just have preferred a solution
>     similar to how existing parameters are exchanged between Veins and SUMO.
>
>     Best regards,
>     Alex
>
>     On 5/2/22 13:59, Jakob Erdmann wrote:
>      > Hello,
>      > you can retrieve static information about an the network via
>     sumolib:
>      > https://sumo.dlr.de/docs/Tools/Sumolib.html
>     <https://sumo.dlr.de/docs/Tools/Sumolib.html>
>      > <https://sumo.dlr.de/docs/Tools/Sumolib.html
>     <https://sumo.dlr.de/docs/Tools/Sumolib.html>>
>      > Relevant calls:
>      > - edge.getRawShape (shape attribute of the edge)
>      > l- ane.getShape (lane shapes derived from the former)
>      >
>      > The spreadType value currently isn't stored within the edge
>     objects but
>      > adding them in
>      >
>     https://github.com/eclipse/sumo/blob/f3bf072cbdc794e3c91d7d0eee790482bd219a60/tools/sumolib/net/__init__.py#L644-L673
>     <https://github.com/eclipse/sumo/blob/f3bf072cbdc794e3c91d7d0eee790482bd219a60/tools/sumolib/net/__init__.py#L644-L673>
>
>      >
>     <https://github.com/eclipse/sumo/blob/f3bf072cbdc794e3c91d7d0eee790482bd219a60/tools/sumolib/net/__init__.py#L644-L673
>     <https://github.com/eclipse/sumo/blob/f3bf072cbdc794e3c91d7d0eee790482bd219a60/tools/sumolib/net/__init__.py#L644-L673>>
>
>      > should be trivial (pull requests welcome).
>      >
>      > regards,
>      > Jakob
>      >
>      >
>      > Am Mo., 2. Mai 2022 um 13:43 Uhr schrieb Alexander Brummer
>      > <alexander.brummer@xxxxxx <mailto:alexander.brummer@xxxxxx>
>     <mailto:alexander.brummer@xxxxxx <mailto:alexander.brummer@xxxxxx>>>:
>      >
>      >     Hi,
>      >
>      >     I use SUMO in combination with Veins.
>      >     For a new model, I need to retrieve the edges' shapes (and
>     spread type)
>      >     from Veins (as for example shown in netedit).
>      >
>      >     Unfortunately, the two parameters do not seem to be available via
>      >     TraCI.
>      >     In fact, they seem to be only present in netedit etc., but
>     not while
>      >     simulating (I understand that they are probably irrelevant
>     for the
>      >     simulation itself).
>      >
>      >     Could you maybe give me a hint about what would be the best
>     way to get
>      >     these values? I have no problem with extending the code, but
>     it seems
>      >     like I would have to make (profound) changes at many places.
>     Therefore,
>      >     I wanted to make sure that I don't overlook an easier solution.
>      >
>      >     Best regards,
>      >     Alex
>      >
>      >
>     
--
Alexander Brummer, M.Sc.

Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Lehrstuhl Informatik 7 - Rechnernetze und Kommunikationssysteme

Mail: alexander.brummer@xxxxxx | Web: https://cs7.tf.fau.de/person/brummer

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