G2 Surface Interpolation Over General Topology Curve Networks

The basic idea of curve network‐based design is to construct smoothly connected surface patches, that interpolate boundaries and cross‐derivatives extracted from the curve network. While the majority of applications demands only tangent plane (G1) continuity between the adjacent patches, curvature c...

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Vydané v:Computer graphics forum Ročník 33; číslo 7; s. 151 - 160
Hlavní autori: Salvi, Péter, Várady, Tamás
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Oxford Blackwell Publishing Ltd 01.10.2014
Predmet:
Analysis
Categories and Subject Descriptors (according to ACM CCS)
Computer graphics
Computer Graphics [I.3.5]: Computational Geometry and Object Modeling-curvenet-based design
Computer Graphics [I.3.5]: Computational Geometry and Object Modeling—curvenet‐based design, transfinite surfaces, Gregory patches, G2 continuity
G2 continuity
Gregory patches
Network topologies
Optimization
Studies
Topological manifolds
transfinite surfaces
ISSN:0167-7055, 1467-8659
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Shrnutí:The basic idea of curve network‐based design is to construct smoothly connected surface patches, that interpolate boundaries and cross‐derivatives extracted from the curve network. While the majority of applications demands only tangent plane (G1) continuity between the adjacent patches, curvature continuous connections (G2) may also be required. Examples include special curve network configurations with supplemented internal edges, “master‐slave” curvature constraints, and general topology surface approximations over meshes. The first step is to assign optimal surface curvatures to the nodes of the curve network; we discuss different optimization procedures for various types of nodes. Then interpolant surfaces called parabolic ribbons are created along the patch boundaries, which carry first and second derivative constraints. Our construction guarantees that the neighboring ribbons, and thus the respective transfinite patches, will be G2 continuous. We extend Gregory's multi‐sided surface scheme in order to handle parabolic ribbons, involving the blending functions, and a new sweepline parameterization. A few simple examples conclude the paper.
Bibliografia:ark:/67375/WNG-XBTVDCWZ-4
istex:958A7754261E395FCB1134130228C96C8A77D0E9
ArticleID:CGF12483
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.12483