Rounded corners with individual radii for corners

[Andreas Neumann-7]

Hi SVG WG,

There has been some discussion about rounded corners. An Inkscape user
asked for help [1] on how to do rounded rects where one corner would
have a sharp corner (no rounding) - similar to the rects in
http://www.svgopen.org/2008/ where the lower-right corner is sharp.

Could we perhaps enhance the spec for rects so users could specify a
list of rx/ry values with a defined start and direction - e.g. following
the direction and start of the already defined stroking of rects.

My guess this wouldn't be too hard to implement since most viewers
convert the rects to path element internally anyway? Any thoughts on how
feasible this is?

Thanks,
Andreas

[1]
http://sourceforge.net/mailarchive/forum.php?thread_name=8f67b6f80910060848w6bb0e7e9n44ef43ec3473639a%40mail.gmail.com&forum_name=inkscape-user

[Erik Dahlstrom]

On Tue, 06 Oct 2009 18:24:32 +0200, Andreas Neumann <a.neumann@...>  
wrote:

> Hi SVG WG,
>
> There has been some discussion about rounded corners. An Inkscape user  
> asked for help [1] on how to do rounded rects where one corner would  
> have a sharp corner (no rounding) - similar to the rects in  
> http://www.svgopen.org/2008/ where the lower-right corner is sharp.
>
> Could we perhaps enhance the spec for rects so users could specify a  
> list of rx/ry values with a defined start and direction - e.g. following  
> the direction and start of the already defined stroking of rects.
>
> My guess this wouldn't be too hard to implement since most viewers  
> convert the rects to path element internally anyway? Any thoughts on how  
> feasible this is?
>
> Thanks,
> Andreas
>
> [1]  
> http://sourceforge.net/mailarchive/forum.php?thread_name=8f67b6f80910060848w6bb0e7e9n44ef43ec3473639a%40mail.gmail.com&forum_name=inkscape-user

I think it would be good if we could get a mapping from/to the CSS3  
border-radius property[2] for use in SVG. That would address this, since  
it allows specifying a radius for each corner.

Cheers
/Erik

[2] http://www.w3.org/TR/css3-background/#the-border-radius

--
Erik Dahlstrom, Core Technology Developer, Opera Software
Co-Chair, W3C SVG Working Group
Personal blog: http://my.opera.com/macdev_ed