def compute_fields(points_list, radia_object_id = None, field_component = 'bz'):
m = len(points_list)
k = m / size
## decompose the domain of the field calcaulation to the different processors and send the arrays
if rank == 0:
radia_object = rad.UtiDmp([radia_object_id], 'bin')
for i in range(1, size):
comm.send(radia_object, dest = i)
else:
radia_object = comm.recv(source = 0)
device_id = rad.UtiDmpPrs(radia_object)
## convert the arrrays back into radia friendly format
calc_points = np.asarray(points_list[rank::size])
radia_points = np.ndarray.tolist(calc_points)
# Compute the fields at the points specified
field_result = rad.Fld(device_id, field_component, radia_points)
# construct arrays to gather points and field solution for plotting and analysis
sendbuf = np.column_stack([calc_points, np.asarray(field_result)])
row,col = sendbuf.shape
recvbuf = None
if rank == 0:
recvbuf = np.empty([size, k+1, col])
# Gather the arrays from the different processors
comm.Gather(sendbuf, recvbuf, root = 0)
# Return the field result
if rank == 0:
# clean up the data after collecting it
data_out = recvbuf.reshape([size * (k + 1), col])
bad_points = np.where((data_out > 1.0e20) + (data_out < -1.0e20) )
data_out = np.delete(data_out, bad_points[0], axis = 0)
# sort the data before returning, sort by x, then y, then z
indices = np.lexsort((data_out[:,0], data_out[:,1], data_out[:,2]))
data_out = [data_out[i,:]for i in indices]
return np.asarray(data_out)
else:
return None
def check_segments(self, container):
"""Loop through all the objects in a container and evaluate the segmentation.
Good shapes will have a magnetisation perpendicular to one of the faces.
So find the normal of each face and evaluate the dot product with the magnetisation, both normalised to 1.
The best have a max dot product of 1. Theoretical min is 1/sqrt(3) though most will be above 1/sqrt(2)."""
shapes = rad.ObjCntStuf(container)
xmin, xmax, ymin, ymax, zmin, zmax = rad.ObjGeoLim(container)
print(f'Checking {len(shapes)} shapes in {container}, extent: x {xmin:.1f} to {xmax:.1f}, y {ymin:.1f} to {ymax:.1f}, z {zmin:.1f} to {zmax:.1f}')
dot_products = {}
for shape in shapes:
sub_shapes = rad.ObjCntStuf(shape)
if len(sub_shapes) > 0: # this shape is a container
dot_products.update(self.check_segments(shape)) # recurse and update dict
else: # it's an atomic shape
mag = rad.ObjM(shape)[0] # returns [[mx, my, mz]], select the first element i.e. [mx, my, mz]
norm = np.linalg.norm(mag) # normalise so total is 1
if norm == 0:
continue
mag = mag / norm
# Have to parse the information from rad.UtiDmp, no other way of getting polyhedron faces!
info = rad.UtiDmp(shape).replace('{', '[').replace('}', ']') # convert from Mathematica list format
in_face_list = False
# print(info)
lines = info.split('\n')
description = lines[0].split(': ')
# print(description)
object_type = description[-1]
# print('Type is', object_type)
if object_type == 'RecMag': # cuboid with axes parallel to x, y, z
# simply find the largest component of normalised magnetisation - the closer to 1, the better
dot_products[shape] = max(abs(mag))
elif object_type == 'Polyhedron': # need to loop over the faces
product_list = []
for line in lines[1:]:
if in_face_list:
if '[' not in line: # reached the end of the face list
break
points = np.array(eval(line.rstrip(',')))
normal = np.cross(points[1] - points[0], points[2] - points[0])
product_list.append(np.dot(normal / np.linalg.norm(normal), mag)) # normalise->unit vector
elif 'Face Vertices' in line:
in_face_list = True
dot_products[shape] = max(product_list) # max seems to be a reasonable figure of merit
return dot_products
def dump_bin(g_id):
return radia.UtiDmp(g_id, 'bin')
def dump(g_id):
return radia.UtiDmp(g_id, 'asc')
rad.MatApl(mag01, mat)
print('Magn. Material index:', mat, ' appled to object:', mag01)
mag00a = rad.ObjFullMag([10,0,40],[12,18,5],[0,0,1],[2,2,2],cnt02,mat,[0.5,0,0])
rad.ObjDrwOpenGL(cnt02)
data_cnt = rad.ObjDrwVTK(cnt02)
print(data_cnt)
objAfterCut = rad.ObjCutMag(mag00a,[10,0,40],[1,1,1]) #,'Frame->Lab')
print('Indexes of objects after cutting:', objAfterCut)
#rad.ObjDrwOpenGL(objAfterCut[0])
print(rad.UtiDmp(mag01, 'asc'))
print(rad.UtiDmp(mat, 'asc'))
#print(rad.UtiDmp(107, 'asc'))
magDpl = rad.ObjDpl(mag, 'FreeSym->False')
print('Number of objects in the container:', rad.ObjCntSize(mag))
print('Number of objects in 2nd container:', rad.ObjCntSize(cnt02))
print('Number of objects in fake container:', rad.ObjCntSize(mag04))
print('Indices of elements in the container:', rad.ObjCntStuf(mag))
print('Indices of elements in the duplicated container:', rad.ObjCntStuf(magDpl))
#rad.ObjDrwOpenGL(mag)
#rad.ObjDrwOpenGL(magDpl)
def _create_dump(path, radia_obj):
with open(path, 'wb') as ff:
mag_dump = radia.UtiDmp(radia_obj, 'bin')
ff.write(mag_dump)
def dump_bin(geom):
return radia.UtiDmp(geom, 'bin')
def dump(geom):
return radia.UtiDmp(geom, 'asc')
