Reliable feature-line driven quad-remeshing (original) (raw)

ACM Transactions on Graphics

We present a new algorithm for the semi-regular quadrangulation of an input surface, driven by its line features, such as sharp creases. We define a perfectly feature-aligned cross-field and a coarse layout of polygonal-shaped patches where we strictly ensure that all the feature-lines are represented as patch boundaries. To be able to consistently do so, we allow non-quadrilateral patches and T-junctions in the layout; the key is the ability to constrain the layout so that it still admits a globally consistent, T-junction-free, and pure-quad internal tessellation of its patches. This requires the insertion of additional irregular-vertices inside patches, but the regularity of the final-mesh is safeguarded by optimizing for both their number and for their reciprocal alignment. In total, our method guarantees the reproduction of feature-lines by construction, while still producing good quality, isometric, pure-quad, conforming meshes, making it an ideal candidate for CAD models. More...

Watertight Anisotropic Surface Meshing Using Quadrilateral Patches

International Meshing Roundtable, 2004

This paper presents a simple technique for generating anisotropic surface triangulations using a generic unstructured quadrilateral decomposition of CAD entities that map to a logical rectangle. Watertightness and geometric quality measures are maintained and are consistent with those obtained using CAPRI's default tessellation algorithm. Output surface triangulations using the new method meet user specified criteria for chord-height, neighbor triangle dihedral

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.