**petsc-main 2021-04-20**

# DMPolytopeType

This describes the polytope represented by each cell.
### Synopsis

typedef enum {DM_POLYTOPE_POINT, DM_POLYTOPE_SEGMENT, DM_POLYTOPE_POINT_PRISM_TENSOR, DM_POLYTOPE_TRIANGLE, DM_POLYTOPE_QUADRILATERAL, DM_POLYTOPE_SEG_PRISM_TENSOR, DM_POLYTOPE_TETRAHEDRON, DM_POLYTOPE_HEXAHEDRON, DM_POLYTOPE_TRI_PRISM, DM_POLYTOPE_TRI_PRISM_TENSOR, DM_POLYTOPE_QUAD_PRISM_TENSOR, DM_POLYTOPE_PYRAMID, DM_POLYTOPE_FV_GHOST, DM_POLYTOPE_INTERIOR_GHOST, DM_POLYTOPE_UNKNOWN, DM_NUM_POLYTOPES} DMPolytopeType;

While most operations only need the topology information in the Plex, we must sometimes have the
user specify a polytope. For instance, when interpolating from a cell-vertex mesh, the type of
polytope can be ambiguous. Also, Plex allows different symmetries of prism cell with the same
constituent points. Normally these types are autoamtically inferred and the user does not specify
them.

### See Also

DMPlexComputeCellTypes()

### Level

beginner

### Location

src/dm/../../include/petscdmtypes.h

Index of all DM routines

Table of Contents for all manual pages

Index of all manual pages