def Mesh2VTKUGrid(mesh):
vtkcelltypes=((),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE,vtk.VTK_TRIANGLE,vtk.VTK_QUAD,vtk.VTK_POLYGON,vtk.VTK_POLYGON),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE,vtk.VTK_TRIANGLE,vtk.VTK_TETRA,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_HEXAHEDRON))
npoints=mesh.num_vertices()
geom=mesh.geometry()
pts=vtk.vtkPoints()
pts.SetNumberOfPoints(npoints)
for i in xrange(npoints):
p=geom.point(i)
pts.SetPoint(i,p.x(),p.y(),p.z())
dim = mesh.topology().dim()
ncells=mesh.num_cells()
cells=vtk.vtkCellArray()
cellTypes=vtk.vtkUnsignedCharArray()
cellTypes.SetNumberOfTuples(ncells)
cellLocations=vtk.vtkIdTypeArray()
cellLocations.SetNumberOfTuples(ncells)
loc=0
for (cell,i) in zip(mesh.cells(),xrange(ncells)) :
ncellpoints=len(cell)
cells.InsertNextCell(ncellpoints)
for cpoint in cell:
cells.InsertCellPoint(cpoint)
cellTypes.SetTuple1(i,vtkcelltypes[dim][ncellpoints])
cellLocations.SetTuple1(i,loc)
loc+=1+ncellpoints
ugrid = vtk.vtkUnstructuredGrid()
ugrid.SetPoints(pts)
ugrid.SetCells(cellTypes,cellLocations,cells)
return ugrid
def Mesh2VTKUGrid(mesh): vtkcelltypes=((),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE,vtk.VTK_TRIANGLE,vtk.VTK_QUAD,vtk.VTK_POLYGON,vtk.VTK_POLYGON),(vtk.VTK_EMPTY_CELL,vtk.VTK_VERTEX,vtk.VTK_LINE,vtk.VTK_TRIANGLE,vtk.VTK_TETRA,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_CONVEX_POINT_SET,vtk.VTK_HEXAHEDRON)) npoints=mesh.num_vertices() geom=mesh.geometry() pts=vtk.vtkPoints() pts.SetNumberOfPoints(npoints) for i in xrange(npoints): p=geom.point(i) pts.SetPoint(i,p.x(),p.y(),p.z()) dim = mesh.topology().dim() ncells=mesh.num_cells() cells=vtk.vtkCellArray() cellTypes=vtk.vtkUnsignedCharArray() cellTypes.SetNumberOfTuples(ncells) cellLocations=vtk.vtkIdTypeArray() cellLocations.SetNumberOfTuples(ncells) loc=0 for (cell,i) in zip(mesh.cells(),xrange(ncells)) : ncellpoints=len(cell) cells.InsertNextCell(ncellpoints) for cpoint in cell: cells.InsertCellPoint(cpoint) cellTypes.SetTuple1(i,vtkcelltypes[dim][ncellpoints]) cellLocations.SetTuple1(i,loc) loc+=1+ncellpoints ugrid = vtk.vtkUnstructuredGrid() ugrid.SetPoints(pts) ugrid.SetCells(cellTypes,cellLocations,cells) return ugrid