Proper geometry exports

[tschaub]

The export in 6baf5d0 just gave us the abstract method on the base type. What is really needed is exports of getCoordinates on each geometry type.

I'm also adding in an example tweak here (because it's getting painful to wait for Travis on small example changes).

[ahocevar]

I don't think you need to export the getCoordinates() method for each subclass. I'd try something like this:

@exportSymbol ol.geom.Geometry
@exportProperty ol.geom.Geometry.prototype.getCoordinates

@exportSymbol ol.geom.Point
@exportSymbol ol.geom.LineString
@exportSymbol ol.geom.Polygon
@exportSymbol ol.geom.MultiPoint
@exportSymbol ol.geom.MultiLineString
@exportSymbol ol.geom.MultiPolygon

But either way, please merge.

[tschaub]

I don't think you need to export the getCoordinates() method for each subclass.

That was the situation back in 6baf5d0. Which didn't work. After compilation, getCoordinates was a property of ol.geom.Geometry.prototype but was undefined. Which makes sense if goog.abstractMethod is undefined. Since a specific getCoordinates method is provided by each of the geometry types, it also makes sense that each needs to be exported individually (we aren't accessing the method on the base geometry prototype).

[elemoine]

Overriding creates new functions, meaning that specific exports/aliases are required. If a subclass doesn't override a method an export to the parent's method suffices.

[elemoine]

Looks good to me.