RectangleMesh

class dolfin.cpp.mesh.RectangleMesh(*args)

Bases: dolfin.cpp.mesh.Mesh

Triangular mesh of the 2D rectangle spanned by two points p0 and p1. Given the number of cells (nx, ny) in each direction, the total number of triangles will be 2*nx*ny and the total number of vertices will be (nx + 1)*(ny + 1).

// Mesh with 8 cells in each direction on the
// set [-1,2] x [-1,2]
Point p0(-1, -1);
Point p1(2, 2);
RectangleMesh mesh(MPI_COMM_WORLD, p0, p1, 8, 8);
Parameters:
  • comm (MPI_Comm) – (MPI_Comm) MPI communicator
  • Point & p0 (const) – (Point ) First point.
  • Point & p1 (const) – (Point ) Second point.
  • nx (std::size_t) – (double) Number of cells in \(x\) -direction.
  • ny (std::size_t) – (double) Number of cells in \(y\) -direction.
  • diagonal (std::string) – (string) Direction of diagonals: “left”, “right”, “left/right”, “crossed”
static create()
// Mesh with 8 cells in each direction on the
// set [-1,2] x [-1,2]
Point p0(-1, -1);
Point p1(2, 2);
auto mesh = RectangleMesh::create(MPI_COMM_WORLD, {p0, p1}, {8, 8});
Parameters:
  • comm (MPI_Comm) – (MPI_Comm) MPI communicator
  • std::array< Point, 2 > & p (const) – (std::array<Point , 2>) Vertex points.
  • std::size_t, 2 > n (std::array<) – (std::array<std::size_t, 2>) Number of cells in each direction
  • cell_type (CellType::Type) – (dolfin::CellType::Type ) Cell type
  • diagonal (std::string) – (string) Direction of diagonals: “left”, “right”, “left/right”, “crossed”
Return type:

Mesh
thisown

The membership flag