petsc-3.10.5 2019-03-28

DMPlexComputeProjection2Dto1D

Rewrite coordinates to be the 1D projection of the 2D coordinates

#include "petscdmplex.h"   
#include "petscfe.h"       
PetscErrorCode DMPlexComputeProjection2Dto1D(PetscScalar coords[], PetscReal R[])

Not collective

coords -The coordinates of a segment

	coords	- The new y-coordinate, and 0 for x
	R	- The rotation which accomplishes the projection

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