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RE: [css3-images] Probably Editorial: radial-gradient() and concentric ellipses

From: Cyril Concolato <Cyril.Concolato@cisra.canon.com.au>
Date: Tue, 28 Feb 2012 22:26:08 +0000
To: Tab Atkins Jr. <jackalmage@gmail.com>, Boris Zbarsky <bzbarsky@mit.edu>
CC: "www-style@w3.org" <www-style@w3.org>
Message-ID: <54EF1DA3171CEE48AD59D7FF0DE043C35A5A95BA@exm01-wvp.cisra.canon.com.au>
Hi Tab,

You may want to have a look at:
http://www.w3.org/TR/2dcontext/#dom-context-2d-createradialgradient

The definition seems clear to me.

My 2 cents,
Cyril

> -----Original Message-----
> From: Tab Atkins Jr. [mailto:jackalmage@gmail.com]
> Sent: Wednesday, 29 February 2012 3:08 AM
> To: Boris Zbarsky
> Cc: www-style@w3.org
> Subject: Re: [css3-images] Probably Editorial: radial-gradient() and concentric
> ellipses
>
> On Tue, Feb 28, 2012 at 5:12 AM, Boris Zbarsky <bzbarsky@mit.edu> wrote:
> > On 2/28/12 3:01 AM, Kang-Hao (Kenny) Lu wrote:
> >>
> >> I am not sure this is well-defined as I don't know if concentric
> >> ellipses are by definition necessarily having the same eccentricity.
> >
> > They're not.
> >
> >
> >> I don't mean to use www-style as a Math forum but oddly enough I
> >> couldn't find the definition of "concentric ellipses" on Google.
> >
> > When people say "concentric ellipses" they seem to mean
> > non-intersecting ellipses with shared center and major axes pointing in the
> same direction.
> >  Or something.  There is no commonly accepted definition I know of,
> > other than "I know it when I see it".
>
> Huh.  I thought there was a simple definition (linearly scale both axises).  I'll do
> some quick testing to see what impls do and ensure it matches what I assume,
> then specify that more clearly.
>
> ~TJ

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Received on Tuesday, 28 February 2012 22:26:41 GMT

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