Rewrite geometry support about cmf HOT 4 CLOSED

Add a field string cmf::upslope::Cell::WKB in cell.h that can be loaded with a OGC-WKB representation. That WKB can be used to create Shapely-Polygons on the fly.

Creating cells and connecting cells can become two distinct jobs and cells_from_polygons would be simpler.

Challenge

How to mark a std::string as a Python byte-string? swig/swig#752

Idea:

typedef bytestring std::string;
%typemap(out) bytestring {
    $result = PyBytes_FromString($1.c_str());
}

from cmf.

Current usage for cell geometry now (if shapely is present):

c.geometry = feature.shape

Needed: A cell creator helper function, like:

def make_cell_from_polygon(project, polygon, z, id=None, with_surfacewater=True):
    c=p.NewCell(polygon.centroid.x, polygon.centroid.y, polygon.centroid.z, 
                polygon.area, with_surfaceswater)
    c.geometry = polygon
    if id is not None:
        c.Id = id
    return c

from cmf.

Use case for current API in here

from cmf.

I have not encountered any issues with the new make_cell_from_polygons.

I would appreciate if you pushed the work to PyPI.

from cmf.