Namespace GooseFEM::Mesh::Tri3#

namespace Tri3

Simple meshes of and mesh operations for triangular elements of type ElementType::Tri3.

Functions

inline array_type::tensor<int, 1> getOrientation(const array_type::tensor<double, 2> &coor, const array_type::tensor<size_t, 2> &conn)

Read the orientation of a mesh of triangular elements of type ElementType::Tri3.

Parameters:

  • coor – Nodal coordinates [nnode, ndim].

  • conn – Connectivity [nelem, nne].

Returns:

Orientation (-1 or +1) per element [nelem].

inline array_type::tensor<size_t, 2> setOrientation(const array_type::tensor<double, 2> &coor, const array_type::tensor<size_t, 2> &conn, const array_type::tensor<int, 1> &val, int orientation = -1)

Set the orientation of a mesh of triangular elements of type ElementType::Tri3.

For efficiency this function reuses the output of getOrientation().

Parameters:

  • coor – Nodal coordinates [nnode, ndim].

  • conn – Connectivity [nelem, nne].

  • val – Current orientation per element (output of getOrientation()) [nelem].

  • orientation – Target orientation (applied to all elements).

Returns:

Connectivity (order of nodes-per-element may have changed) [nelem, nne].

inline array_type::tensor<size_t, 2> setOrientation(const array_type::tensor<double, 2> &coor, const array_type::tensor<size_t, 2> &conn, int orientation = -1)

Set the orientation of a mesh of triangular elements of type ElementType::Tri3.

Parameters:

  • coor – Nodal coordinates [nnode, ndim].

  • conn – Connectivity [nelem, nne].

  • orientation – Target orientation (applied to all elements).

Returns:

Connectivity (order of nodes-per-element may have changed) [nelem, nne].

class Regular : public GooseFEM::Mesh::RegularBase2d<Regular>
#include <GooseFEM/MeshTri3.h>

Regular grid of squares, with each square cut into two triangular elements.

Public Functions

inline Regular(size_t nelx, size_t nely, double h = 1.0)

Constructor.

Parameters:

  • nelx – Number of elements in x-direction.

  • nely – Number of elements in y-direction.

  • h – Edge-size (of the squares, and thus of two of three element-edges).