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Current Status of GRUMMP

The current release of GRUMMP is version 0.5.0.1.1 This version consists of eight executable programs.

- `tri` generates two-dimensional triangular isotropic unstructured meshes, using a seriously enhanced version of Ruppert's algorithm. Recent work at UBC has extended Ruppert's scheme to allow better user control over cell size and grading [11] and to allow meshing with curved boundaries [1].
- `meshopt2d` improves existing two-dimensional triangular isotropic unstructured meshes, including performing adaptive refinement based on a user-provided length scale.
- `coarsen2d` produces a triangular unstructured mesh with approximately twice the local length scale of the input mesh, including directional anisotropic coarsening of quasi-structured parts of the fine mesh.
- `tetra` generates three-dimensional tetrahedral isotropic unstructured meshes, using Shewchuk's algorithm [16] modified for cell size and grading control [11].
- `meshopt3d` improves existing three-dimensional tetrahedral isotropic unstructured meshes, using techniques developed by Freitag and Ollivier-Gooch [3]. Just as in 2D, this executable also performs adaptive refinement.
- `coarsen3d` produces a tetrahedral unstructured mesh with approximately twice the local length scale of the input mesh, including directional anisotropic coarsening of quasi-structured parts of the fine mesh.
- `scat2d` performs linear interpolation of two-dimensional scattered data.
- `scat3d` performs linear interpolation of three-dimensional scattered data.

For further information on invoking these programs, including a description of command line arguments, see Chapter 2. For a description of the file formats which GRUMMP executables read and write, see Chapter 3.