W3C home > Mailing lists > Public > www-svg@w3.org > April 2010

Re: Is implied lineto after moveto ambiguous?

From: Rick <graham.rick@gmail.com>
Date: Wed, 21 Apr 2010 15:03:47 -0400
Message-ID: <l2s18569e001004211203l726c3a7atef2a7ddf012ba759@mail.gmail.com>
To: Erik Dahlstrom <ed@opera.com>
Cc: www-svg <www-svg@w3.org>
On Wed, Apr 21, 2010 at 2:47 PM, Erik Dahlstrom <ed@opera.com> wrote:
> On Wed, 21 Apr 2010 19:18:52 +0200, Rick <graham.rick@gmail.com> wrote:
> New spec text is as follows:
> [[ Start a new sub-path at the given (x,y) coordinate. M (uppercase)
> indicates that absolute coordinates will follow; m (lowercase) indicates
> that relative coordinates will follow. If a moveto is followed by multiple
> pairs of coordinates, the subsequent pairs are treated as implicit lineto
> commands. Hence, implicit lineto commands will be relative if the moveto is
> relative, and absolute if the moveto is absolute. If a relative moveto (m)
> appears as the first element of the path, then it is treated as a pair of
> absolute coordinates. In this case, subsequent pairs of coordinates are
> treated as relative even though the initial moveto is interpreted as an
> absolute moveto. ]]
> ...
>> I haven't tested browsers, I would be willing to expend the effort if
>> any interest is shown.
> We have one new test for this spec change, but you are most welcome to do
> further testing (and help us improve the testsuite).

Thanks Erik.

The new definition looks clear (it agrees with me!) and the test is
comprehensive.  I think it's handled.  New tests would be best
implemented for untested issues.

I notice the test for this shows red on failure, it someone was
thinking in the beginning, they all would.

>  http://dev.w3.org/SVG/profiles/1.1F2/test/svg/paths-data-16-t.svg
> Cheers
> /Erik

Received on Wednesday, 21 April 2010 20:12:37 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 22:54:26 UTC