Re: GTK+ scene graph

[Emmanuele Bassi <ebassi gmail com>]

hi;

On 3 August 2014 11:08, Sébastien Wilmet <swilmet gnome org> wrote:
> Thanks for the explanation.
>
> On Sun, 2014-08-03 at 01:13 +0100, Emmanuele Bassi wrote:
> > <snip>
>
> > yes, it was considered, and no: "depth" (or similar terms) won't be used.
> >
> > people using a canvas with 3D transformations intuitively grasp the
> > concept of a Z axis, as well as that of a coordinate on that axis.
> > they understand rotations around that axis, as well as scaling and
> > translation.
> >
> > using "depth" would be confused with the possibility of having "real"
> > 3D objects, with a width, height, and depth.
>
> Ok so there are good reasons behind that. "depth-axis" would be a
> solution,

no, "depth-axis" would *not* be a solution, and I wrote exactly why it
wouldn't be.

the term "depth-axis" does not mean what you think it means, and does
not make sense in the context of a 3D space; it also is not a commonly
used term in any other relevant API.

> but it's too long

that's not the reason at all.

> and x/y/z is a widespread convention. I was
> just wondering if the GSK API contains other conventions, maybe less
> widespread.

the conventions are mostly well-established terminology mutuated by
projects like CoreAnimation, the Android view API, and Clutter.

ciao,
 Emmanuele.

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