PetscSpaceSetup_Poly(): make idempotent

Maybe PetscSpace itself should be immutable, but PETSCSPACEPOLY
definitely should be.

PetscSpaceSetDegree(): now take maxDegree argument

For symmetry, and some auxiliary / exotic spaces and the like are easier
to specify by their maximum degree by their maximum complete subspace
(e.g

PetscSpaceSetDegree(): now take maxDegree argument

For symmetry, and some auxiliary / exotic spaces and the like are easier
to specify by their maximum degree by their maximum complete subspace
(e.g. homogeneous polynomials).

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PetscSpaceEvaluate_Polynomial(): fix temp array dependencies

PetscFE: create directory structure

It's becoming necessary, as we try to do more complex things,
to sharpen the interface between the things in dtfe, and make
extension more approachable. It's tim

PetscFE: create directory structure

It's becoming necessary, as we try to do more complex things,
to sharpen the interface between the things in dtfe, and make
extension more approachable. It's time.

show more ...