One of the most used algorithms to generate hexahedral meshes for extrusion volumes\udis the multi-sweeping method. The algorithm decomposes the geometry into\udmany-to-one sub-volumes and then meshes each sub-volume separately.\udHowever, the quality of the final mesh depends on the decomposition process. First,\udthe location of inner nodes created during the decomposition process may induce bad\udquality elements. To avoid this drawback, we propose a three-stage decomposition\udprocess to locate those nodes. Second, the imprinting process is not robust when\uddealing with non-planar surfaces. For this reason, we introduce the new concept of\udthe computational domain. The computational domain is a planar representation of\udthe levels of the geometry. In this way, we improve the operations needed to perform\udimprints.
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