1410999 - consider implementing the SVG bearing command

Status: RESOLVED WONTFIX

(Core :: SVG, enhancement)

Description

[Marco Perez [:mpk]]

The upcoming SVG2 spec (currently a W3C Candidate Recommendation) contains a section about bearing commands in paths. If implemented they would enable web authors to influence the orientation of subsequent relative path commands. While this sounds like a useful idea, they might be dropped from the spec due to lack of implementations.

Comment 1

[Robert Longson [:longsonr]]

The specification says that the bearing command is at risk: https://www.w3.org/TR/SVG2/

As such we won't implement it unless there is support from other browser implementers.

Comment 2

[Marco Perez [:mpk]]

Hm... sounds like a chicken/egg dilemma.

Support doesn't seem to be very strong at this time, from what I can gather:
* a 3 year old Chromium bug suffers from neglect:
  https://bugs.chromium.org/p/chromium/issues/detail?id=366548
* Microsoft doesn't seem to have any plans to implement it so far:
  https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/?page=1&q=svg2
* And neither does Apple:
  https://bugs.webkit.org/buglist.cgi?quicksearch=svg2

Interestingly, the (quite current) "SVG Paths" spec draft no longer mentions the bearing commands being at risk. (https://svgwg.org/specs/paths/#PathDataBearingCommands)

heycam, since you're listed as co-author of the specs, could you please comment on the status of the SVG Path bearing commands?

Comment 3

[Cameron McCormack (:heycam)]

I don't think it's particularly high priority to implement, and as you say, I haven't seen any indications of interest from other browsers to implement it.  I think it's fine to leave this bug as is and see if any further interest develops.

Comment 4

[Marco Perez [:mpk]]

The "bearing" commands have been dropped from the SVG2 specification.
(They're still listed in "SVG Paths", though.)

Comment 5

[violet.bugreport]

Mark as WONTFIX, since it was dropped from spec and no other browsers have interest in implementing.