LoopyCuts: practical feature-preserving block decomposition for strongly hex-dominant meshing

Fig. 1. Given a surface mesh and a curvature and feature aligned cross-field (a) LoopyCuts generates a sequence of field-aware cutting loops (b), and uses these loops to generate solid cuts through the object (c), decomposing the model into a metamesh consisting of hex (green), prism (blue) and other (orange) simple blocks (d). It converts the metamesh into a hex-mesh via midpoint refinement. The output hex-mesh (e,f) is well-shaped and well-aligned with the input field.