Provide method to allow user to specify the GeometryFactory

[fbl100]

Provide the user a mechanism to specify the GeometryFactory used in the GeoJSONReader. An example use case for this would be a geometry factory that creates Polygons that properly calculate their area on the surface of the earth.

[fbl100]

FWIW I have a local branch with this working. Not sure if I need special permissions to push my branch for considerations.

[woodsyb-zz]

This would be awesome. Being able to set precision is pretty important.

[patzi]

Hi, I'd like to work on this as I need the possibility to set the GeometryFactory#SRID . Is see two possible ways to achieve this:

• change the API of GeoJSONReader, make the factory a settable property and call read(...) like this:
  GeoJSONReader.instance().read(...), where GeoJSONReader.instance() returns a static instance of a GeoJSONReader that would be in the same state as the current version.
  Or:
  GeoJSONReader reader = new GeoJSONReader(); reader.read(...);
• change read(...) to read(..., GeometryFactory aFactory) and use the existing GeoJSONReader.factory when the argument aFactory is null. Additional I would add read(...) as a shorthand for read(..., null)

What would you prefer @bjornharrtell ? Second would be of course with lot less changes to current users. I could then provide a pull request. A similar approach could also be used for #22

[bjornharrtell]

Second option looks pragmatic to me. I found the initial description of this issue hard to understand which is the reason for the lack of response.

[patzi]

OK, then I will make a pull request for this with the second option.