def gmshInfo(fname, dim, *args, **kwargs):
''' Construct a MeshInfo from a gmsh dictionary '''
if dim==2:
gmsh_elem_key=2 # Key for triangle element in Gmsh
gmsh_face_key=1 # Key for line element in Gmsh
elif dim==3:
gmsh_elem_key=4 # Key for tetrahedral element in Gmsh
gmsh_face_key=2 # Key for triangle element in Gmsh
gmsh_dict=gmsh_reader(fname)
# Pick out the coordinates of the vertices that we actually need
nodes = gmsh_dict['nodes'][:,0:dim]
els=filter(lambda e : e['type']==gmsh_elem_key, gmsh_dict['elements'].values())
# This is the element->vertex map. This establishes a canonical element ordering
elements = map(lambda e: sorted(e['nodes']), els)
# Create a map from the elements to their geometric Identities
elemIdentity = map(lambda e: e['geomEntity'], els)
# These are the physical entities in the mesh.
boundaries = map(lambda f: (f['physEntity'], tuple(sorted(f['nodes']))), filter(lambda e : e['type']==gmsh_face_key, gmsh_dict['elements'].values()))
return SimplicialMeshInfo(nodes, elements, elemIdentity, boundaries, dim, *args, **kwargs)
from scipy.sparse.linalg.dsolve.linsolve import spsolve
from pypwdg.mesh.gmsh_reader import gmsh_reader
from pypwdg.mesh.mesh import gmshMesh
from pypwdg.core.physics import assemble
from pypwdg.core.boundary_data import zero_impedance, dirichlet
from pypwdg.utils.quadrature import trianglequadrature
from pypwdg.utils.timing import print_timing
from pypwdg.core.evaluation import Evaluator, EvalElementError
from pypwdg.output.vtk_output import VTKStructuredPoints
from pypwdg.output.vtk_output import VTKGrid
from pypwdg.mesh.meshutils import MeshQuadratures
from pypwdg.core.vandermonde import LocalVandermondes
mesh_dict=gmsh_reader('../../examples/3D/scattmesh.msh')
mesh=gmshMesh(mesh_dict,dim=3)
boundaryentities = [82, 83]
Nq = 16
Np = 3
dirs = cubeRotations(cubeDirections(Np))
quad=trianglequadrature(Nq)
elttobasis = [[PlaneWaves(dirs, k)]] * mesh.nelements
params={'alpha':.5, 'beta':.5,'delta':.5}
l_coeffs=[-1j*k, 1]
