surfaceSplitNonManifolds.C File Reference

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

• 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.

Usage

• surfaceSplitNonManifolds [OPTIONS] <Foam surface file> <surface output file>

Parameters:

\<Foam

surface file>

Todo:

Detailed description of argument.

Parameters:

\<surface

output file>

Todo:

Detailed description of argument.

Parameters:

-debug	Generate debugging output.
-case	<dir> Case directory.
-help	Display help message.
-doc	Display Doxygen API documentation page for this application.
-srcDoc	Display Doxygen source documentation page for this application.

Definition in file surfaceSplitNonManifolds.C.

#include "src/OpenFOAM/global/argList/argList.H"
#include "src/triSurface/triSurface/triSurface.H"
#include "src/OpenFOAM/db/IOstreams/Fstreams/OFstream.H"
#include "src/OpenFOAM/containers/Lists/ListOps/ListOps.H"
#include "src/meshTools/triSurface/triSurfaceTools/triSurfaceTools.H"

Include dependency graph for surfaceSplitNonManifolds.C:

Go to the source code of this file.