def __init__(self, shaft, blade, n_blades):
self.shaft_solid = shaft.generate_solid()
blade.apply_transformations(reflect=True)
blade_solid = blade.generate_solid(max_deg=2,
display=False,
errors=None)
blades = []
blades.append(blade_solid)
for i in range(n_blades-1):
blade.rotate(rad_angle=1.0*2.0*np.pi/float(n_blades))
blade_solid = blade.generate_solid(max_deg=2, display=False, errors=None)
blades.append(blade_solid)
blades_combined = blades[0]
for i in range(len(blades)-1):
boolean_union = BRepAlgoAPI_Fuse(blades_combined, blades[i+1])
boolean_union.Build()
if not boolean_union.IsDone():
raise RuntimeError('Unsuccessful assembling of blade')
blades_combined = boolean_union.Shape()
boolean_union = BRepAlgoAPI_Fuse(self.shaft_solid, blades_combined)
boolean_union.Build()
result_compound = boolean_union.Shape()
sewer = BRepBuilderAPI_Sewing(1e-2)
sewer.Add(result_compound)
sewer.Perform()
self.sewed_full_body = sewer.SewedShape()
def from_boolean_union(cls, A, B) -> 'BRep':
"""Construct a BRep from the boolean union of two other BReps.
Parameters
----------
A : :class:`~compas_occ.brep.BRep`
B : :class:`~compas_occ.brep.BRep`
Returns
-------
:class:`~compas_occ.brep.BRep`
"""
fuse = BRepAlgoAPI_Fuse(A.shape, B.shape)
if not fuse.IsDone():
raise Exception("Boolean union operation could not be completed.")
brep = BRep()
brep.shape = fuse.Shape()
return brep
def occ_pair_union(a, b):
algo = BRepAlgoAPI_Fuse(a, b)
algo.Build()
if not algo.IsDone():
raise Exception("warn: union algotithm failed\n")
return algo.Shape()
