High Quality Content by WIKIPEDIA articles! In geometry, a corner-point grid is a tessellation an Euclidean 3D volume where the base cell has 6 faces (hexahedron). A set of straight lines defined by their end points define the pillars of the corner-point grid. The pillars have a lexiographical ordering that determines neighbouring pillars. On each pillar, a constant number of nodes (corner-points) is defined. A corner-point cell is now the volume between 4 neighbouring pillars and two neighbouring points on each pillar. Each cell can be identified by integer coordinates (i,j,k), where the k coordinate runs along the pillars, and i and j span each layer. The cells are ordered naturally, where the index i runs the fastest and k the slowest.

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