PlanarClosedCurveContainment with Curve Geometries

PlanarClosedCurveContainment.py

def PlanarClosedCurveContainment(curve_a, curve_b, plane=None, tolerance=None):
    """Determines the relationship between the regions bounded by two coplanar
    simple closed curves
    Parameters:
      curve_a, curve_b = identifiers of two planar, closed curves
      plane[opt] = test plane. If omitted, the currently active construction
        plane is used
      tolerance[opt] = if omitted, the document absolute tolerance is used
    Returns:
      a number identifying the relationship if successful
        0 = the regions bounded by the curves are disjoint
        1 = the two curves intersect
        2 = the region bounded by curve_a is inside of curve_b
        3 = the region bounded by curve_b is inside of curve_a
      None if not successful
    """
    if tolerance is None or tolerance<=0:
        tolerance = scriptcontext.doc.ModelAbsoluteTolerance
    if plane:
        plane = rhutil.coerceplane(plane)
    else:
        plane = scriptcontext.doc.Views.ActiveView.ActiveViewport.ConstructionPlane()
    rc = Rhino.Geometry.Curve.PlanarClosedCurveRelationship(curve_a, curve_b, plane, tolerance)
    return int(rc)