MIR

Axom's Mir, (M)aterial (I)interface (R)econstruction component provides classes that can process Blueprint meshes with mixed materials into new Blueprint meshes such that there is a single material per zone. In addition, the MIR component provides useful building blocks for developing algorithms using Blueprint meshes. There are views that simplify dealing with Conduit data and utility algorithms for processing and constructing meshes.

Design goals

This component's algorithms are mainly delivered as classes that are templated on an execution space, allowing them to operate on a variety of computing backends. The algorithms take Conduit nodes (containing Blueprint data) as input and output new Blueprint data in an output Conduit node. Where possible, algorithms have been broken out into classes to promote reuse.

Views

Blueprint defines protocols for representing various mesh and data constructs in a hierarchical form inside Conduit nodes. There are objects defined for coordinate sets (coordsets), mesh topologies, mesh fields, material sets (matsets), and there are various flavors of each type of object. This can make it difficult to write algorithms against Blueprint data since the data live in Conduit nodes with different names and they may have different formats. Conduit can also use multiple data types for any of the data arrays that represent objects. Views were developed to simplify some of these challenges by providing common templated interfaces that let different types of objects be accessed in a uniform way. Templating helps to deal with the data types. The views also provide functions that can wrap a Conduit node in a suitable view type and then dispatch that view to a generic user-provided lambda, enabling algorithms to be instantiated for multiple data types with a compact amount of code.

MIR

The MIR component provides an implementation of the Equi-Z MIR algorithm, though additional algorithms are planned.

Utilities

The MIR component provides algorithms for performing useful mesh operations such as extracting sub-meshes, merging meshes, clipping meshes, and creating relations. These building blocks can be reused to ease the process of writing additional algorithms that operate on Blueprint meshes.