[PD] Gem coordinates / OpenGL

[David Powers]

So, follow up question:

I can make lines with [polygon 2] - easy enough. But, there is one thing 
I still don't get - what are GEM coordinates supposed to represent? The 
length of "1" or "4" in GEM seems arbitrary. I'm sure there's a logical 
explanation though. I was thinking of trying to sketch out some weird 
things, and render them with GEM, but understanding the coordinate 
system would help a lot!

Also, still interested in the OpenGL tutorial - are there any good 
reasons to use OpenGL wrappers over built in GEM functions? What might I 
be able to do better than GEM, or what is missing in GEM that these 
wrappers have?

Thanks,
David

David Powers wrote:

> Never mind, I guess I was trying to create it without an argument, 
> because I was going to check the arguments AFTER I created it. But 
> without the argument PD won't create it (though I think there should 
> be some default argument built in).
> ~David
>
> David Powers wrote:
>
>> Hello,
>>
>> According to the GEM manual, there are "curve" and "polygon" objects 
>> in GEM. However, I'm not able to create them. Do they exist?
>>
>> Related question, how do I just draw some lines in GEM, is that 
>> possible? Do I need the openGL wrappers, and if so, does anyone know 
>> an easy openGL tutorial that might get me started? Or does someone 
>> have a really simple example patch they could send?
>>
>> Thanks,
>> David
>>
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