surfaceSplitNonManifolds.C File Reference

Takes multiply connected surface and tries to split surface at multiply connected edges by duplicating points. Introduces concept of. More...

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Detailed Description

Takes multiply connected surface and tries to split surface at multiply connected edges by duplicating points. Introduces concept of.

Original source file surfaceSplitNonManifolds.C

- borderEdge. Edge with 4 faces connected to it.

• borderPoint. Point connected to exactly 2 borderEdges.
• borderLine. Connected list of borderEdges.

By duplicating borderPoints this will split 'borderLines'. As a preprocessing step it can detect borderEdges without any borderPoints and explicitly split these triangles.

The problems in this algorithm are:

• determining which two (of the four) faces form a surface. Done by walking face-edge-face while keeping and edge or point on the borderEdge borderPoint.
• determining the outwards pointing normal to be used to slightly offset the duplicated point.

Uses sortedEdgeFaces quite a bit.

Is tested on simple borderLines resulting from extracting a surface from a hex mesh. Will quite possibly go wrong on more complicated border lines (i.e. ones forming a loop).

Dumps surface every so often since might take a long time to complete.

Definition in file surfaceSplitNonManifolds.C.