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First presented by Hartmann, closings (implicit surfaces sealing the inlets or outlets of pipes) can bridge the gap between parametric pipe surfaces and implicit functional splines (a powerful tool for blending several implicit surfaces). This paper proposes auxiliary spheres instead of the initial pipe surfaces as the base surfaces in constructing closings, so that the closing based algorithm of...
Setbacks not only beautify the shape of polyhedral vertex blending, but also overcome the difficulties inherited from non-setback blending. However, stitching several tensor product Bézier surfaces, the existing approaches to setback vertex blending may cause twist compatibility problems and approximate solutions, especially when the vertex gathers more edges. This paper proposes a new algorithm,...
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