Name
Abstract | ||
|---|---|---|
CAD models generally consist of multiple NURBS patches, both trimmed and untrimmed. There is a long-standing challenge that trimmed NURBS patches cause unavoidable gaps in the model. We address this by converting multiple NURBS patches to a single untrimmed NURBS-compatible subdivision surface in a three stage process. First, for each patch, we generate in domain space a quadrangulation that follows boundary edges of the patch and respects the knot spacings along edges. Second, the control points of the corresponding subdivision patch are computed in model space. Third, we merge the subdivision patches across their common boundaries to create a single subdivision surface. The converted model is gap-free and can maintain inter-patch continuity up to C 2 . We address the unavoidable gaps in trimmed NURBS by converting them to subdivision.A CAD model of multiple NURBS patches is converted to a subdivision control mesh.The result is a gap-free subdivision surface that approximates the input shape.The chosen non-uniform quadrilateral subdivision is NURBS-compatible.It can match exactly any untrimmed NURBS patch and patch edges curves. |
Year | DOI | Venue |
|---|---|---|
2016 | 10.1016/j.cagd.2016.07.003 | Computer Aided Geometric Design |
Keywords | Field | DocType |
CAD model,Trimmed NURBS,Non-uniform subdivision | CAD,Subdivision surface,Subdivision,Quadrilateral,Geometry,T-spline,Merge (version control),Knot (unit),Mathematics | Journal |
Volume | Issue | ISSN |
48 | C | 0167-8396 |
Citations | PageRank | References |
2 | 0.45 | 37 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| JingJing Shen | 1 | 8 | 1.97 |
| Jirí Kosinka | 2 | 84 | 17.76 |
| Malcolm A. Sabin | 3 | 358 | 60.06 |
| Neil A. Dodgson | 4 | 723 | 54.20 |