[Gnash-dev] Re: Coordinate Spaces

[strk]

On Wed, Apr 23, 2008 at 10:35:07AM +0200, strk wrote:
> It seems time for a Coordinate Spaces cleanup.
> The current code is pretty confusing in that reguard, and
> we'll nead a clean interface for implementing Stage alignment,
> which is currently causing misalignments on YouTube (for example).

Started a wiki page:
        http://wiki.gnashdev.org/CoordinateSystem

Didn't add the "Window Coordinate Space" definition yet as I don't
really like the name. There's not necessarely a window, could be
any kind of I/O device, right ?

--strk;

> My proposal for a naming convention is as follow:
> 
> = Stage Coordinate Space =
> 
>  This is the coordinate reference system used by the core library.
>  Units are in twips. 
> 
> = Window Coordinate Space =
> 
>  This is the coordinate reference system used by the Gui.
>  Units are in pixels. 
> 
> The core lib should know NOTHING about the Window Coordinate Space,
> leaving any conversion to the Gui.
> 
> If you agree on the definitions I'd go on reviewing some core and Gui
> interfaces to use those names. Any question/concern ?