"""Load compact exported operators; NumPy/SciPy only. Apache-2.0."""
import json
from pathlib import Path
import numpy as np
from assembly import solve

def component(identifier, directory=None):
    directory=Path(directory) if directory else Path(__file__).parent/'data'
    c=json.loads((directory/(identifier+'.json')).read_text())
    return {k:np.asarray(v) if isinstance(v,list) else v for k,v in c.items()}

def pipe(component_ids, rolls=None, deltaT=100., supports=None,
         gravity=(0,0,-9.81),directory=None):
    return solve([component(i,directory) for i in component_ids],
                 rolls=rolls,deltaT=deltaT,supports=supports,gravity=gravity,nmodes=3)