def examplepic(n, k=20):
origin = np.array([-0.2,-0.2])
bounds=np.array([[0,1],[0,1]],dtype='d')
npoints=np.array([k * 20,k * 20], dtype=int)
g = pcb.FourierHankel(origin, [0], k)
pom.output2dfn(bounds, g.values, npoints, alpha=1.0, cmap=mp.cm.get_cmap('binary'))
rt = PlaneWaveFromSourceRule(origin)
mesh = tum.regularsquaremesh(n)
pom.showmesh(mesh)
etob = {}
psp.Problem(mesh,k, None).populateBasis(etob, rt)
pom.showdirections(mesh, etob)
mp.show()
def bubblematerial(c = 1, N = 20):
# slowness, gradslowness = bubble(c)
slowness, gradslowness = hump(c)
x0 = np.vstack((np.linspace(0,1,N), np.zeros(N))).T
p0 = np.vstack((np.zeros(N), np.ones(N))).T
wfs, idxs = prw.wavefront(x0, p0, slowness, gradslowness, 0.1, 1.2/c, 0.1)
mp.subplot(1,2,1)
plotwavefront(wfs, idxs)
mesh = ptum.regularsquaremesh(12, "BDY")
etob = prb.getetob(wfs, idxs, mesh, "BDY")
mp.subplot(1,2,2)
pom.showmesh(mesh)
pom.showdirections(mesh, etob,scale=20)