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/petsc/doc/manual/
H A Ddmcommonality.md13 3. How to store/access the "connectivity information" that is needed at each entity (point) and pro…
30 seven point stencil computed at the $(i, j, k)$ entity one needs the numerical values at the $(i \p…
37 …aces, and grid cells (also called elements). As with `DMDA` each type of entity must have the same…
40 by $(i, j, k)$ plus a `slot` that tells us which entity on the cell is being accessed. Since a stag…
41 number of numerical values associated with a given entity type, the function `DMStagGetLocationSlot…
57 for an entity on the grid from its `point` value, since each `point` can have any number of values …
63 a particular entity. For example, when using the finite element method, the application iterates al…
68 and the connectivity of a point (entity) is obtained by `DMPlexGetTransitiveClosure()`.
86 …WORK`, the connectivity information is defined by a graph, which is is query-able at each entity by
H A Ddmplex.md86 and then point values (recall each point is an integer that represents a single geometric entity, a…
151 Specifically, it assigns a number of dofs to each mesh entity on the DAG.
/petsc/src/dm/impls/plex/
H A Dplexgmsh.c402 GmshEntity *entity[4]; member
411 PetscCall(PetscCalloc1(count[dim], &(*entities)->entity[dim])); in GmshEntitiesCreate()
424 PetscCall(PetscFree((*entities)->entity[dim])); in GmshEntitiesDestroy()
431 …ntitiesAdd(GmshEntities *entities, PetscInt index, PetscInt dim, PetscInt eid, GmshEntity **entity) in GmshEntitiesAdd() argument
435 entities->entity[dim][index].dim = dim; in GmshEntitiesAdd()
436 entities->entity[dim][index].id = eid; in GmshEntitiesAdd()
437 if (entity) *entity = &entities->entity[dim][index]; in GmshEntitiesAdd()
441 …cErrorCode GmshEntitiesGet(GmshEntities *entities, PetscInt dim, PetscInt eid, GmshEntity **entity) in GmshEntitiesGet() argument
447 *entity = &entities->entity[dim][index]; in GmshEntitiesGet()
667 GmshEntity *entity = NULL; in GmshReadEntities_v40() local
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/petsc/src/binding/petsc4py/docs/ipynb/
H A Ddmplex.ipynb91 …h entities are stored as integers in a single array called a chart. Each entity in the chart is ca…
96 …"The *cone* of a point consists of the points of a dimension lower which make up that entity. So w…
210 … default, the DMPlex comes with a label called 'depth'. This labels each entity based on how deep …
/petsc/src/binding/petsc4py/src/petsc4py/PETSc/
H A DDMPlex.pyx1601 Depth of the entity to balance (e.g., 0 -> balance vertices).
/petsc/share/petsc/datafiles/meshes/
H A Dtestcase3D.cas784 (reference-frames/entity-link? #f)