[whatwg] Rename the 7-arg arcTo() to ellipseTo()?

Tab Atkins Jr. jackalmage at gmail.com
Sun Sep 23 20:25:20 PDT 2012

On Sun, Sep 23, 2012 at 3:57 PM, Ian Hickson <ian at hixie.ch> wrote:
> On Fri, 21 Sep 2012, Tab Atkins Jr. wrote:
>> So, can we rename the 7-arg arcTo to ellipseTo?  That seems to support
>> your "always [require] all the arguments" recommendation. ^_^
> Just have one arcTo command, that takes all the arguments. Why split it
> into two, if you always require all the arguments?

Oh, that's what you meant.

That seems silly.  It's more convenient and simple for authors to have
a circular form, separate from the elliptical form.  It lets you omit
the second radius and the rotation, as they're irrelevant.

>> > In general, though, I wouldn't recommend trying to do this at all. The
>> > SVG path syntax is its own thing, and it already supports arcs and so
>> > forth. Adding a whole new redundant set of commands that work slightly
>> > differently is just bloat asking for interop issues, IMHO. The design
>> > of the path syntax makes sense, it's terse. Embrace its strengths,
>> > don't second-guess its design.
>> The existing SVG "A" command is one of the largest source of complaints
>> from hand-authors. While it's *occasionally* useful as stated, it often
>> requires you to do trig to get the effect you want. The Canvas arc
>> commands, with their use of an angle to sweep across, are exactly what
>> authors want a lot of the time, and commonly ask for.
> So introduce a new one-letter command that fixes specifically the problems
> with A, don't drag in the entire canvas path API. :-)

We're not, we're pulling in the two/four useful arc commands.


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