Re: [Glsdk-devel] Geometry generation

[Branan R. <br...@gm...>]

There's no point passing a *out variable. The generation function has
to allocate memory for the structure members anyway, so it may as well
allocate the whole structure.

And if we return a structure like that, do we have a glsDrawShape()
function, or do we make the user draw it?

On Sat, Aug 23, 2008 at 4:37 PM, Henri Häkkinen <hen...@gm...> wrote:
>
>
> On Sun, Aug 24, 2008 at 2:21 AM, Branan Riley <br...@gm...> wrote:
>>
>> I'm going to start on geometry generation functions. I think sphere,
>> cube, cylinder, and cone are good to start with.
>>
>> I do have a couple questions about how we want to use these, though.
>>
>> 1) Should they return data in a pre-defined format, so that the user
>> has to set up the VBOs to send the data (reinforcing the steps needed
>> to get geometry to the GL), or should they handle it automatically (to
>> make things simpler for code that's demonstrating shader effects)
>>
>> 2) What should the prefix be? I'm thinking gls for "OpenGL Shape"
>>
>> 3) If we want to have it return data, what's a good format for the data?
>>
>
> I propose a some sort structure or an object which the functions return.
>
> typedef struct GLSshape_s {
>   ...
> } GLSshape;
>
> void glsCreateSphere (GLSshape *out, GLfloat radius);
> ...
>
> Members are public so that the caller may directly access them. We could
> later extend this library to load .obj files.
>
>>
>> Branan
>>
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>
>
> --
> Henri 'henux' Häkkinen
>
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