I'm still at work. I'll take a detailed look at it in about 2.5 hours,
if no one else has by then
Branan
On Thu, Aug 28, 2008 at 2:14 PM, Henri Häkkinen <hen...@gm...> wrote:
> I am unable to get glmMatLookAt4f function working. I am following the
> formula given in the gluLookAt manpage, but still no luck. Could somebody
> take a look at my code? The test case gives me a failure. Here is my local
> copy of the function (the repos version is outdated).
>
> GLMmat4f *
> glmMatLookAt4f (GLMmat4f *out,
> const GLMvec3f *eye,
> const GLMvec3f *center,
> const GLMvec3f *up)
> {
> GLMmat4f t;
> GLMvec3f f, s, u;
>
> assert (out);
> assert (eye);
> assert (center);
> assert (up);
>
> /* FIXME: not working */
> /* FIXME: unoptimal implementation */
>
> glmVecSub3f (&f, center, eye);
> glmVecNormalize3f (&f, &f);
> glmVecNormalize3f (&u, up);
> glmVecCross3f (&s, &f, &u);
> glmVecCross3f (&u, &s, &f);
>
> out->m00 = s.x;
> out->m01 = s.y;
> out->m02 = s.z;
> out->m03 = 0.0f;
> out->m10 = u.x;
> out->m11 = u.y;
> out->m12 = u.z;
> out->m13 = 0.0f;
> out->m20 = -f.x;
> out->m21 = -f.y;
> out->m22 = -f.z;
> out->m23 = 0.0f;
> out->m30 = 0.0f;
> out->m31 = 0.0f;
> out->m32 = 0.0f;
> out->m33 = 1.0f;
>
> glmMatIdentity4f (&t);
> t.m03 = -eye->x;
> t.m13 = -eye->y;
> t.m23 = -eye->z;
>
> glmMatMul4f (out, out, &t);
> return out;
> }
>
>
> --
> Henri 'henux' Häkkinen
>
>
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