def test_work():
'''Test all features of the module using a detector composed of four
overlapping square sensors, with lots of rays.'''
import random, time
nrays = 10000
d1 = matrix.col((1, 0, 0))
d2 = matrix.col((0, 1, 0))
lim = (0,50)
panel0 = sensor(matrix.col((-45, -45, 100)), d1, d2, lim, lim)
panel1 = sensor(matrix.col((-5, -45, 99)), d1, d2, lim, lim)
panel2 = sensor(matrix.col((-45, -5, 98)), d1, d2, lim, lim)
panel3 = sensor(matrix.col((-5, -5, 97)), d1, d2, lim, lim)
d = detector([panel0, panel1, panel2, panel3])
rays = [matrix.col((random.random() - 0.5,
random.random() - 0.5,
random.random() - 0.5)) for j in range(nrays)]
rpi = { }
for ver in ('matrix', 'vector'):
t0 = time.time()
rp = predictor_factory(ver)(rays, d.sensors())
rpi[ver] = rp.intersections()
for j, intersection_matrix in enumerate(rpi['matrix']):
intersection_vector = rpi['vector'][j]
assert(intersection_matrix[0] == intersection_vector[0])
print 'OK'
def test_all():
'''Test all features of the module using a detector composed of four
overlapping square sensors.'''
d1 = matrix.col((1, 0, 0))
d2 = matrix.col((0, 1, 0))
lim = (0,50)
panel0 = sensor(matrix.col((-45, -45, 100)), d1, d2, lim, lim)
panel1 = sensor(matrix.col((-5, -45, 99)), d1, d2, lim, lim)
panel2 = sensor(matrix.col((-45, -5, 98)), d1, d2, lim, lim)
panel3 = sensor(matrix.col((-5, -5, 97)), d1, d2, lim, lim)
d = detector([panel0, panel1, panel2, panel3])
rays = [matrix.col((0, 0, 1))]
for ver in ('matrix', 'vector'):
rp = predictor_factory(ver)
rp = rp(rays, d.sensors())
# only one ray to consider
rpi = rp.intersections()
# the closest intersection should be on panel3
assert rpi[0][0] == 3
print 'OK'
def __init__(self, origin, dir1, dir2, pixel_size_fast, pixel_size_slow,
npx_fast, npx_slow):
self._px_size_fast = pixel_size_fast
self._px_size_slow = pixel_size_slow
self._npx_fast = int(npx_fast)
self._npx_slow = int(npx_slow)
lim1 = (0, self._npx_fast * self._px_size_fast)
lim2 = (0, self._npx_slow * self._px_size_slow)
# set up a single sensor
s = sensor(origin, dir1, dir2, lim1, lim2)
# set up the abstract detector
detector.__init__(self, [s])
def __init__(self, origin, dir1, dir2, pixel_size_fast, pixel_size_slow,
npx_fast, npx_slow):
self._px_size_fast = pixel_size_fast
self._px_size_slow = pixel_size_slow
self._npx_fast = int(npx_fast)
self._npx_slow = int(npx_slow)
lim1 = (0, self._npx_fast * self._px_size_fast)
lim2 = (0, self._npx_slow * self._px_size_slow)
# set up a single sensor
s = sensor(origin, dir1, dir2, lim1, lim2)
# set up the abstract detector
detector.__init__(self, [s])
def scattering_prediction(reflections,
UB_mat,
rotation_vector,
wavelength,
resolution,
assert_non_integer_index=False):
'''Test the reflection_prediction class.'''
ra = rotation_angles(resolution, UB_mat, wavelength, rotation_vector)
beam_vector = matrix.col([0, 0, 1 / wavelength])
detector_size = 100
detector_distance = 100
s = sensor(
matrix.col(
(-0.5 * detector_size, -0.5 * detector_size, detector_distance)),
matrix.col((1, 0, 0)), matrix.col((0, 1, 0)), (0, detector_size),
(0, detector_size))
rp = reflection_prediction(rotation_vector, beam_vector, UB_mat, s)
for hkl in reflections:
if ra(hkl):
omegas = ra.get_intersection_angles()
if assert_non_integer_index:
assert ra.H[0] != int(ra.H[0]) or \
ra.H[1] != int(ra.H[1]) or \
ra.H[2] != int(ra.H[2])
for omegaidx in [0, 1]:
rot_mat = rotation_vector.axis_and_angle_as_r3_rotation_matrix(
omegas[omegaidx])
assert (math.fabs(rot_mat.determinant() - 1.0) < 0.0001)
H1 = (rot_mat * UB_mat) * hkl
H1 = H1 + beam_vector
len_H1 = math.sqrt((H1[0] * H1[0]) + (H1[1] * H1[1]) +
(H1[2] * H1[2]))
if math.fabs(len_H1 - 1.0 / wavelength) > 0.0001:
raise RuntimeError, 'length error for %d %d %d' % hkl
if rp(hkl, omegas[omegaidx]):
x, y = rp.get_prediction()
assert (0 < x < detector_size)
assert (0 < y < detector_size)
def scattering_prediction(reflections, UB_mat, rotation_vector,
wavelength, resolution,
assert_non_integer_index = False):
'''Test the reflection_prediction class.'''
ra = rotation_angles(resolution, UB_mat, wavelength, rotation_vector)
beam_vector = matrix.col([0, 0, 1 / wavelength])
detector_size = 100
detector_distance = 100
s = sensor(matrix.col((- 0.5 * detector_size,
- 0.5 * detector_size,
detector_distance)),
matrix.col((1, 0, 0)),
matrix.col((0, 1, 0)),
(0, detector_size), (0, detector_size))
rp = reflection_prediction(rotation_vector, beam_vector, UB_mat, s)
for hkl in reflections:
if ra(hkl):
omegas = ra.get_intersection_angles()
if assert_non_integer_index:
assert ra.H[0] != int(ra.H[0]) or \
ra.H[1] != int(ra.H[1]) or \
ra.H[2] != int(ra.H[2])
for omegaidx in [0,1]:
rot_mat = rotation_vector.axis_and_angle_as_r3_rotation_matrix(
omegas[omegaidx])
assert(math.fabs(rot_mat.determinant() - 1.0) < 0.0001)
H1 = (rot_mat * UB_mat)*hkl
H1 = H1 + beam_vector
len_H1 = math.sqrt((H1[0] * H1[0]) +
(H1[1] * H1[1]) +
(H1[2] * H1[2]))
if math.fabs(len_H1 - 1.0 / wavelength) > 0.0001:
raise RuntimeError, 'length error for %d %d %d' % hkl
if rp(hkl, omegas[omegaidx]):
x, y = rp.get_prediction()
assert(0 < x < detector_size)
assert(0 < y < detector_size)
def work_detector_model():
# trivial test of instantiation
i = matrix.col((1, 0, 0))
j = matrix.col((0, 1, 0))
k = matrix.col((0, 0, 1))
d1 = i
d2 = -j
lim = (0,50)
panel0 = sensor(matrix.col((-126, 144, -193)), d1, d2, lim, lim)
panel0.set_origin(k)
panel0.set_frame(k, i, j)
assert(k.dot(matrix.col(panel0.origin)) > 0.999)
print 'OK'
return
from rstbx.bpcx import sensor
from dxtbx.model.experiment import Panel
npx_fast = 1475
npx_slow = 1679
pix_size_f = pix_size_s = 0.172
fast = matrix.col((1.0, 0.0, 0.0))
norm = matrix.col((0.0, 0.0, 1.0))
slow = norm.cross(fast).normalize()
centre = matrix.col((0.0, 0.0, 200.0))
origin = centre - (
0.5 * npx_fast * pix_size_f * fast + 0.5 * npx_slow * pix_size_s * slow
)
# direct use of the sensor constructor
lim = (0, 50)
my_panel = sensor(origin, fast, slow, lim, lim)
# equivalent using the dials Panel
dials_panel = Panel(
"PAD", fast, slow, origin, (lim[1] / 200, lim[1] / 200), (200, 200), (0, 2e20)
)
# get the bits needed to make a RayPredictor
s0 = mybeam.get_s0()
spindle = mygonio.get_rotation_axis()
ray_predictor = RayPredictor(s0, spindle, UB, sweep_range)
# also make a reflection_prediction object
from rstbx.diffraction import reflection_prediction
rp = reflection_prediction(mygonio.get_rotation_axis(), mybeam.get_s0(), UB, my_panel)
# make an identical sensor and a Panel for testing.
from rstbx.bpcx import sensor
from dxtbx.model.experiment import Panel
npx_fast = 1475
npx_slow = 1679
pix_size_f = pix_size_s = 0.172
fast = matrix.col((1., 0., 0.))
norm = matrix.col((0., 0., 1.))
slow = norm.cross(fast).normalize()
centre = matrix.col((0., 0., 200.))
origin = centre - (0.5 * npx_fast * pix_size_f * fast +
0.5 * npx_slow * pix_size_s * slow)
# direct use of the sensor constructor
lim = (0,50)
my_panel = sensor(origin, fast, slow, lim, lim)
# equivalent using the dials Panel
dials_panel = Panel("PAD", fast, slow, origin,
(lim[1]/200, lim[1]/200), (200, 200), (0, 2e20))
# get the bits needed to make a RayPredictor
s0 = mybeam.get_s0()
spindle = mygonio.get_rotation_axis()
ray_predictor = RayPredictor(s0, spindle, UB, sweep_range)
# also make a reflection_prediction object
from rstbx.diffraction import reflection_prediction
rp = reflection_prediction(mygonio.get_rotation_axis(), mybeam.get_s0(),
UB, my_panel)