Re: [Glsdk-devel] [GLm] api

[H. H. <hen...@gm...>]

Okay.

I think I can say that the GLM API is more or less "set". This does not mean
that there won't be any additions or modifications to it but the general
look of it is fine with me and it has been open for discussion for some
time. So if Korval could at some point take it to his tasks to write the API
reference outline in DocBook which I could fill in with the actual docs. The
'docs/sdk_reference/glm-apiref' file may also be removed in the process.

On Tue, Aug 26, 2008 at 5:16 PM, Henri Häkkinen <hen...@gm...> wrote:

> Okay I see what you mean by that. However I think our mathlib is intended
> mainly to be used for OpenGL (a matrix based system), so mul and div feels a
> bit redundant atm.
>
>
> On Tue, Aug 26, 2008 at 1:20 AM, <gl...@mo...> wrote:
>
>> > What do you mean 'mathematical operations or software operations'?
>>
>> In math we can graphically represent vectors as arrows pointing form
>> (point A to B. It's hard to imagine how we could visualize Mul operation
>> in such form.
>>
>> In graphics library we often use vectors to represent size or other
>> things. Especially when comes to 2D rendering, transforming vectors by
>> means of Add/Mul is more common than transforming my multiplying (x, y,
>> 1.0) vector by 3x3 matrix for the sake of both simplicity and performance.
>>
>> Even in 3D space. Imagine a volume defined as a box with origin at point A
>> and a size of S. If point B lays within this box then C = (B - A) / S
>> gives texture-space coordinate for point B. An alternative would be to
>> define a 4x4 transformation matrix that transforms point B into texture
>> space. Such matrix would be defined as conjunction of glmMatTranslate and
>> glmMatScale.
>>
>>
>> These are the kind of examples showing that even if something is useless
>> in math, it's useful in programming.
>> Sorry for speaking in riddles the first time ;)
>>
>> It's bed time for me. Cheers.
>>
>>
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>
>
>
> --
> Henri 'henux' Häkkinen
>
>


-- 
Henri 'henux' Häkkinen