DMPlexSetIsoperiodicFaceTransform#

set geometric transform from donor to periodic points

Synopsis#

#include "petscdmplex.h"   
PetscErrorCode DMPlexSetIsoperiodicFaceTransform(DM dm, const PetscScalar t[])

Logically Collective

Input Arguments#

dm - DMPLEX that has been configured with DMPlexSetIsoperiodicFaceSF()
t - 4x4 affine transformation basis.

Notes#

Affine transforms are 4x4 matrices in which the leading 3x3 block expresses a rotation (or identity for no rotation), the last column contains a translation vector, and the bottom row is all zero except the last entry, which must always be 1. This representation is common in geometric modeling and allows affine transformations to be composed using simple matrix multiplication.

Although the interface accepts a general affine transform, only affine translation is supported at present.

Developer Note#

This interface should be replaced by making BasisTransform public, expanding it to support affine representations, and adding GPU implementations to apply the G2L/L2G transforms.

Level#

advanced

Location#

src/dm/impls/plex/plexsfc.c

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