[whatwg] CanvasRenderingContext2D with addPath, currentPath
cabanier at gmail.com
Mon Nov 4 11:29:57 PST 2013
On Mon, Nov 4, 2013 at 10:36 AM, Dirk Schulze <dschulze at adobe.com> wrote:
> On Nov 3, 2013, at 3:22 PM, Glenn Maynard <glenn at zewt.org> wrote:
> > On Sat, Nov 2, 2013 at 9:03 PM, Rik Cabanier <cabanier at gmail.com> wrote:
> >>> Does this mean that ctx.currentPath != ctx.currentPath?
> >> Yes
> >>> That's bad!
> >> Why would it be bad (apart from being different)?
> > It's strange to say "foo.bar.baz = 1" (ctx.currentPath.baz = 1), and for
> > foo.bar.baz to not be 1 the next time you look. It's also confusing if
> > use it as a Map key.
> I think the problem that the UA would be focused with is the following:
> var path = ctx1.currentPath;
> ctx2.currentPath = path;
> or simply
> ctx2.currentPath = ctx1.currentPath
> Both contexts could manipulate the same path and both can have different
> CTMs which also change independent of each other. Mixing that up could
> cause a huge mess.
> That is one of the reasons why WebKit creates copies.
Yes, but the code should have been:
which arguably doesn't look as elegant.
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