[whatwg] Stroking algorithm in Canvas 2d

Justin Novosad junov at google.com
Wed Oct 16 10:50:05 PDT 2013

Also, I think we may have passed the point of no return on this.
setLineDash is already widely supported as currently spec'ed.

On Wed, Oct 16, 2013 at 1:43 PM, Ian Hickson <ian at hixie.ch> wrote:

> On Wed, 16 Oct 2013, Justin Novosad wrote:
> >
> > No, I don't mean an implied zero. I meant that at every iteration over
> > the dash pattern, the pattern is inverted if it has an odd number of
> > elements (blanks become dashes and vice versa). This would render
> > exactly the same as what is currently in the spec, which is consistent
> > with SVG.  The only difference is that there is no doubling of the
> > array.  If the array needs to be doubled in order to work with the
> > underlying graphics API, that should be the UA's business and it should
> > be hidden under the hood.
> Ah, ok. I'm fine with us changing to that if browsers are able to. I don't
> think there's much of a problem either way; the advantage of the current
> model is that it leaves no ambiguity in the API about what it means to set
> an odd-length array.
> --
> Ian Hickson               U+1047E                )\._.,--....,'``.    fL
> http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
> Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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