BRL.vec, BRL.matrix

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Leadwerks

I also use vec4's for planes and colors. That's why I call it a vec4 and not a quat:

Type TEntity

Field color:TVec4=New TVec4

Method SetColor(r,g,b,a=255)
color.x=float(r)/255.0
color.y=float(g)/255.0
color.z=float(b)/255.0
color.w=float(a)/255.0
EndMethod

glLightfv GL_LIGHT0,GL_DIFFUSE,entity.color

All that GLSL makes me think in terms of vectors. My advice is to convert everything to OO vectors, because if you mix OO vectors with a lot of individual floats you won't get the full advantage of how much it shrinks your code.