MergeBlocks Filter Coincident Point Merging Decision
We need a scheme for managing multiblock datasets and merging blocks. We have data sets that have physically discontinuous meshes that might have coincident points that should never be merged. We have a scalar field that has values that would determine whether any given point could be merged and we could create a bitmask of the same. We want to be able to merge points to manage parallel distributed created datasets and run things like ghost cell generator for distributed analysis. Although the meshes are discontinuous they are represented in the same unstructured grid dataset.