[news.eclipse.tools.gef] Re: Lines disappearing on grid

["Pratik Shah" <ppshah@xxxxxxxxxx>]

Are you using XOR?

"Andreas Rummler" <andreas.rummler@xxxxxxxxxxxxx> wrote in message
news:cnfimo$76m$1@xxxxxxxxxxxxxxxxxx
>
> Dear Newsgroup,
>
> I've got quite a strange problem, where I'm helpless in where to search
> for the mistake.
>
> In one of my GEF editors a user may paint symbols for an electronic
> circuit editor. These symbols consist of several geometric shapes.
> The editor includes a layer which paints the grid, for drawing the
> shapes RectangleFigure, Ellipse and so on are used. For drawing lines
> the a Polyline figure is used. Everything works fine except for lines
> which are situated exactly on the grid. On a 10/10 grid a line from
> (10,10) to (50,50) is visible, but a line from (10,10) to (50,10) is
> not (same for a line from (10,10) to (10,50)).
>
> It seems, that the grid layer is on top of the layer which contains the
> lines and a line "on the grid" becomes invisible. The grid works with
> all other figures.
>
> As I already said - I don't know where to search for the reason of this
> kind of behaviour.
>
> Best regards,
>
> Andreas Rummler
>
>
> -- 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> + Andreas Rummler                                                      +
> + Technical University of Ilmenau, Germany               (__)          +
> + Department Of Electronic Circuits & Systems            (oo)          +
> +                                                         \/-------\   +
> + MAIL: mailto:arummler@xxxxxxx                            ||     | \  +
> + MAIL: mailto:andreas.rummler@xxxxxxxxxxxxx               ||----||  * +
> + WEB : http://www.inf-technik.tu-ilmenau.de/~rummler      ~~    ~~    +
> + PGP : http://www.inf-technik.tu-ilmenau.de/~rummler/public.pgp       +
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
> "Programming today is a race between software engineers striving to
>   build bigger and better idiot-proof programs and the universe trying
>   to produce bigger and better idiots. So far, the universe is winning."
>   Richard Cook
>