Re: [Jsbsim-devel] new ground-reaction with real terrain

[grtuxhangar t. <grt...@gm...>]

Hello, Erik

Ok, i understand why i have some models which get some strange behaviour.

Looking at your code within jsbsim.cxx i find the following:

static SGPropertyNode_ptr terrain_nas =
fgGetNode("/fdm/jsbsim/environment/terrain-hight", false);
   if (!terrain_nas && material) {

thus the condition at ("/fdm/jsbsim/environment/terrain-hight", false)
makes fg terrain taken in account or not.
Unfortunately "/fdm/jsbsim/environment/terrain-hight"  is not ever present
it depends on the aircraft and the age of the models ( older have not that
property).

So the condition cannot be hardcoded on it.


We must  define a flag which will be used by every JSBSim Aircraft.

Bertrand is right  the feature could be disabled by default, and the flag
if present will enable the feature
That's the best way to be sure we don't break the others models (jsbsim).

Thanks

Josh



On 18 January 2014 15:49, grtuxhangar team <grt...@gm...> wrote:

> Oh yes,
>
>  Did not know  there was disciple.
> Or only because of:
>  the same requirements leads to the same solution
>
> Josh
>
>
>
> On 18 January 2014 15:37, Bertrand Coconnier <bco...@gm...> wrote:
>
>> 2014/1/18 grtuxhangar team <grt...@gm...>
>>
>>> Hello, Bertrand
>>>
>>> You are right, however we may make an exception, since that Nasal script
>>> with JSB systems workaround seems to be not popular ( only the Gerard's
>>> models were using it ).
>>> However if there is an easy way with switch (with  FG terrain or without
>>> ), we "buy"  it :)
>>>
>>> thanks
>>>
>>> Josh
>>>
>>>
>>
>> Flug seems to have conducted an effort similar to yours (see
>> http://forum.flightgear.org/viewtopic.php?f=49&t=21780&start=60#p197817).
>> So I would not bet that your models would the only ones to be affected.
>>
>> Bertrand.
>>
>>
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>