calfem.mesh.trimesh2d¶

Purpose:

Triangulates an area described by a number vertices (vertices) and a set of segments that describes a closed polygon.

Syntax:

cfm.trimesh2d(vertices, segments=None, holes=None, maxArea=None, quality=True, dofs_per_node=1, logFilename='tri.log', triangleExecutablePath=None)

Description:

Source docstring:

Triangulates an area described by a number vertices (vertices) and a set
of segments that describes a closed polygon.

Parameters:

    vertices            array [nVertices x 2] with vertices describing the geometry.

                        [[v0_x, v0_y],
                         [   ...    ],
                         [vn_x, vn_y]]

    segments            array [nSegments x 3] with segments describing the geometry.

                        [[s0_v0, s0_v1,marker],
                         [        ...        ],
                         [sn_v0, sn_v1,marker]]

    holes               [Not currently used]

    maxArea             Maximum area for triangle. (None)

    quality             If true, triangles are prevented having angles < 30 degrees. (True)

    dofs_per_node         Number of degrees of freedom per node.

    logFilename         Filename for triangle output ("tri.log")

Returns:

    coords              Node coordinates

                        [[n0_x, n0_y],
                         [   ...    ],
                         [nn_x, nn_y]]

    edof                Element topology

                        [[el0_dof1, ..., el0_dofn],
                         [          ...          ],
                         [eln_dof1, ..., eln_dofn]]

    dofs                Node dofs

                        [[n0_dof1, ..., n0_dofn],
                         [         ...         ],
                         [nn_dof1, ..., nn_dofn]]

    bdofs               Boundary dofs. Dictionary containing lists of dofs for
                        each boundary marker. Dictionary key = marker id.