Italian Chapter Conference 2020 - Smart Tools and Apps in computer Graphics
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Browsing Italian Chapter Conference 2020 - Smart Tools and Apps in computer Graphics by Author "Kosinka, Jiri"
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Item Multisided B-spline Patches Over Extraordinary Regions(The Eurographics Association, 2020) Hettinga, Gerben J.; Kosinka, Jiri; Biasotti, Silvia and Pintus, Ruggero and Berretti, StefanoWe propose a generalised B-spline construction that extends uniform bi-degree B-splines to multisided regions spanned over extraordinary regions in quad-dominant meshes. We show how the structure of the existing cubic multisided B-spline patch can be generalised to work with B-spline basis functions of arbitrary degree and can be spanned over extraordinary vertices as well as extraordinary faces of quad-dominant meshes. The resulting multisided surfaces are Cd-1 continuous internally and connect with Gd-1 continuity to adjacent regular and other multisided B-splines patches. In addition, we design several specialised functions that increase the visual quality of the patches, in both the extraordinary vertex and face settings.