Title
Volume parametrization quantization for hexahedral meshing
Abstract
Developments in the field of parametrization-based quad mesh generation on surfaces have been impactful over the past decade. In this context, an important advance has been the replacement of error-prone rounding in the generation of integer-grid maps, by robust quantization methods. In parallel, parametrization-based hex mesh generation for volumes has been advanced. In this volumetric context, however, the state-of-the-art still relies on fragile rounding, not rarely producing defective meshes, especially when targeting a coarse mesh resolution. We present a method to robustly quantize volume parametrizations, i.e., to determine guaranteed valid choices of integers for 3D integer-grid maps. Inspired by the 2D case, we base our construction on a non-conforming cell decomposition of the volume, a 3D analogue of a T-mesh. In particular, we leverage the motorcycle complex, a recent generalization of the motorcycle graph, for this purpose. Integer values are expressed in a differential manner on the edges of this complex, enabling the efficient formulation of the conditions required to strictly prevent forcing the map into degeneration. Applying our method in the context of hexahedral meshing, we demonstrate that hexahedral meshes can be generated with significantly improved flexibility.
Year
DOI
Venue
2022
10.1145/3528223.3530123
ACM Transactions on Graphics
Keywords
DocType
Volume
block-structured, multi-block, T-mesh, hexahedral mesh, volume mesh, block decomposition, base complex
Journal
41
Issue
ISSN
Citations 
4
0730-0301
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Hendrik Brueckler100.34
David Bommes258727.75
Marcel Campen340723.47