[PD-dev] Accessing Gem_State pointer from a flext-external [resolved]

[marius schebella]

so this means, I can write gem externals using flext?
are there examples/documentation around?
thanks!
marius.

2009/2/20 Jean-Yves Gratius <jygratius at club.fr>:
> Hi Thomas,
> oups sorry, I forgot to describe my problem.
> yes it compiled, didn't crash.
> it just sended data that didn't correpond to the gem_state struct.
> Indeed i found my error:
> I read that gem_state is followed by 2 pointers : gem_state <*GemCache>
> <*GemState>
> If I replace in my code GetPointer(argv[0]) by GetPointer(argv[1]),
> everything is ok.
> J.Y.
>
> Thomas Grill a écrit :
>> Hi,
>> it would be useful to know in which way your code doesn't do what you
>> want.
>> Does it compile or not, are there runtime problems, does it crash?
>> gr~~~
>>
>> Am 19.02.2009 um 14:25 schrieb Jean-Yves Gratius:
>>
>>> Hi,
>>> I'm triing to write a flext external thats reads a gem_state struct.
>>> I 'd like to access the pixBlock data.
>>> I wrote the following method ( registered as
>>> FLEXT_ADDMETHOD_(0,"gem_state", gem_state)    )
>>> I don't know where I am wrong in my code....
>>> any hint ?
>>> thanks,
>>> Jean-Yves
>>>
>>> void my_flext_external::gem_state(int argc, t_atom *argv)
>>> {
>>>    GemState *my_pointer;
>>>    if (CanbePointer(argv[0]))
>>>    {
>>>        my_pointer =  (GemState *) GetPointer(argv[0]);   // retrieve
>>> gem pointer
>>>        if (!my_pointer)
>>>           {   post ("no pixblock !");   return;  }
>>>           else
>>>              {  //accessing to fields
>>>                post ("dirty field = %d", my_pointer->dirty);
>>>                post ("inDisplayList field = %d",
>>> my_pointer->inDisplayList);
>>>                post ("lighting field = %d", my_pointer->lighting);
>>>                post ("texture field = %d", my_pointer->texture);
>>>                post ("*image field = %d", my_pointer->image);
>>>                post ("*texCoords field = %d", my_pointer->texCoords);
>>>                post ("multiTexUnits field = %d",
>>> my_pointer->multiTexUnits);
>>>                    // etc...
>>>               }
>>>
>>>    }
>>>
>>>
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