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author | Stan Seibert <stan@mtrr.org> | 2011-09-16 15:02:02 -0400 |
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committer | Stan Seibert <stan@mtrr.org> | 2011-09-16 15:02:02 -0400 |
commit | 142b3c3caff164deb9bc7b2848e58e52387723ff (patch) | |
tree | 417da3ad69a2756aff7a21dca4b08733d3e87afb /tests/test_rayleigh.py | |
parent | 084dfd08b714faefaea77cb7dc04d2e93dc04b1d (diff) | |
download | chroma-142b3c3caff164deb9bc7b2848e58e52387723ff.tar.gz chroma-142b3c3caff164deb9bc7b2848e58e52387723ff.tar.bz2 chroma-142b3c3caff164deb9bc7b2848e58e52387723ff.zip |
Move CUDA source inside chroma package, rename tests directory to test
Diffstat (limited to 'tests/test_rayleigh.py')
-rw-r--r-- | tests/test_rayleigh.py | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/tests/test_rayleigh.py b/tests/test_rayleigh.py deleted file mode 100644 index 02ccb41..0000000 --- a/tests/test_rayleigh.py +++ /dev/null @@ -1,57 +0,0 @@ -import unittest -import numpy as np - -from chroma.geometry import Solid, Geometry -from chroma.make import box -from chroma.sim import Simulation -from chroma.optics import water_wcsim -from chroma.event import Photons -import histogram -from histogram.root import rootify -import ROOT -ROOT.gROOT.SetBatch(1) - -class TestRayleigh(unittest.TestCase): - def setUp(self): - self.cube = Geometry(water_wcsim) - self.cube.add_solid(Solid(box(100,100,100), water_wcsim, water_wcsim)) - self.cube.pmtids = [0] - self.cube.build(use_cache=False) - self.sim = Simulation(self.cube, geant4_processes=0) - - nphotons = 100000 - pos = np.tile([0,0,0], (nphotons,1)).astype(np.float32) - dir = np.tile([0,0,1], (nphotons,1)).astype(np.float32) - pol = np.zeros_like(pos) - phi = np.random.uniform(0, 2*np.pi, nphotons).astype(np.float32) - pol[:,0] = np.cos(phi) - pol[:,1] = np.sin(phi) - t = np.zeros(nphotons, dtype=np.float32) - wavelengths = np.empty(nphotons, np.float32) - wavelengths.fill(400.0) - - self.photons = Photons(pos=pos, dir=dir, pol=pol, t=t, wavelengths=wavelengths) - - def testAngularDistributionPolarized(self): - # Fully polarized photons - self.photons.pol[:] = [1.0, 0.0, 0.0] - - photons_end = self.sim.simulate([self.photons], keep_photons_end=True, max_steps=1).next().photons_end - aborted = (photons_end.flags & (1 << 31)) > 0 - self.assertFalse(aborted.any()) - - # Compute the dot product between initial and final dir - rayleigh_scatters = (photons_end.flags & (1 << 4)) > 0 - cos_scatter = (self.photons.dir[rayleigh_scatters] * photons_end.dir[rayleigh_scatters]).sum(axis=1) - theta_scatter = np.arccos(cos_scatter) - h = histogram.Histogram(bins=100, range=(0, np.pi)) - h.fill(theta_scatter) - h = rootify(h) - - # The functional form for polarized light should be - # (1 + \cos^2 \theta)\sin \theta according to GEANT4 physics - # reference manual. - f = ROOT.TF1("pol_func", "[0]*(1+cos(x)**2)*sin(x)", 0, np.pi) - h.Fit(f) - self.assertGreater(f.GetProb(), 1e-3) - |