unify dart:html.{Point,SVGPoint}

[DartBot]

This issue was originally filed by @seaneagan

---

dart:html has two separate interfaces to represent a point:

Point
SVGPoint

These ought to be unified. See also issue #3035.

[rakudrama]

They are not equivalent.

• SVGPoint has an additional method.
• Methods on other interfaces that take Point or SVGPoint do not function correctly if passed the other kind of point.

We could make these other methods work, but only by wrapping them in code that copies the point to the correct type. We probably want to avoid all the checking and copying that would entail.

---

Removed Type-Defect label.
Added Type-Enhancement, Area-DOM labels.

[justinfagnani]

At least it'd be nice to have a Point interface and default implementation outside of dart:html that both html:Point and html:SVGPoint implement.

For the simple geometric and math classes like Point, Vector2,3, etc. If there isn't a core definition there will be a multitude of incompatible implementations in libraries.

[sethladd]

Added Triaged label.

[iposva-google]

Removed Area-DOM label.
Added Area-HTML label.

[vsmenon]

Added this to the M1 milestone.

[blois]

Additionally, Point cannot be constructed on non-Webkit browsers (native type is WebKitPoint).

[vsmenon]

Removed this from the M1 milestone.
Added this to the M2 milestone.

[blois]

Removed this from the M2 milestone.
Added this to the Later milestone.

[efortuna]

Added html-api label.

[blois]

Set owner to @efortuna.
Removed this from the Later milestone.
Added this to the M8 milestone.
Removed html-api label.

[efortuna]

I have a partial CL implemented for this, but it does not modify the current api for Point. Tabling for now.

---

Removed this from the M8 milestone.
Added this to the Later milestone.

[kevmoo]

Removed Area-HTML label.
Added Area-Library, Library-Html labels.

[kasperl]

Removed this from the Later milestone.
Added Oldschool-Milestone-Later label.

[kasperl]

Removed Oldschool-Milestone-Later label.