AbstractItemBuffer

Depending on the domain that is worked over, different item buffers are available, e.g. CellBuffer and FacetBuffer. These are set up during call to setup_domainbuffer.

For each item (cell or facet), the values in the buffer are updated to the current item, and can be accessed with the following functions:

FerriteAssembly.get_aeold — Function

get_aeold(itembuffer::AbstractItemBuffer)

Get the degrees of freedom pertinent to the values object (e.g. cellvalues) in the itembuffer.

Note: Filled by NaNs unless aold is passed to work!

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FerriteAssembly.get_old_state — Function

get_old_state(itembuffer::AbstractCellBuffer)

Get the old state variables for the cell. Currently only available for cells and not for facets.

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FerriteAssembly.get_time_increment — Function

get_time_increment(itembuffer::AbstractItemBuffer)

Get the time increment to get to the current step. Set by set_time_increment!.

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Ferrite.dof_range — Method

Ferrite.dof_range(::AbstractItemBuffer, ::Symbol)

Get the dof_range for a specific field, same as Ferrite.dof_range(::SubDofHandler, ::Symbol), but fully type-stable.

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Ferrite.getcoordinates — Method

Ferrite.getcoordinates(::AbstractItemBuffer)

Get the cell coordinates for the current item.

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Ferrite.celldofs — Method

Ferrite.celldofs(::AbstractItemBuffer)

Get the degree of freedom indices for the current cell referred to by the current item.

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Ferrite.cellid — Method

Ferrite.cellid(::AbstractItemBuffer)

Get the cell nr for the current item.

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FerriteAssembly.get_user_data — Function

get_user_data(itembuffer::AbstractItemBuffer)

Get the user_data passed to the DomainSpec when setting up the domain. This is not modified and always passed around as reference.

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FerriteAssembly.get_user_cache — Function

get_user_cache(itembuffer::AbstractItemBuffer)

Get the user_cache created by allocate_cell_cache. For multithreaded applications, this cache is copied between for each tasks, and can be modified without risking race conditions.

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AbstractCellBuffer

Two types of cell buffers are provided, the regular CellBuffer and a wrapper AutoDiffCellBuffer that speeds up the automatic differentiation. By using the above access functions, these behave identical.

To allocate the user cache, overload allocate_cell_cache:

FerriteAssembly.allocate_cell_cache — Method

FerriteAssembly.allocate_cell_cache(material, cellvalues)

This function can be overloaded for the specific material to allocate a cache that is stored in the AbstractCellBuffer. This cache can be used to reduce allocations. Returns nothing by default.

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FacetBuffer

The FacetBuffer is similar to the CellBuffer, except that it has FacetValues instead of CellValues and that state variables are not supported. To allocate user cache, overload allocate_facet_cache:

FerriteAssembly.allocate_facet_cache — Function

FerriteAssembly.allocate_facet_cache(material, cellvalues)

This function can be overloaded for the specific material to allocate a cache that is stored in the FacetBuffer and can be used to reduce allocations. Returns nothing by default.

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