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BUG: triSurfaceTools::surfaceSide. When the sample is essentially on

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the surface and not on an edge or point, do not check that the line
between the sample and the nearest point is parallel to the normal.
This commit is contained in:
graham
2010-02-23 17:23:06 +00:00
parent c0ba0228e3
commit bf877c0e56
1 changed files with 28 additions and 22 deletions
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50
src/meshTools/triSurface/triSurfaceTools/triSurfaceTools.C
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@ -2220,33 +2220,39 @@ Foam::triSurfaceTools::sideType Foam::triSurfaceTools::surfaceSide
if (nearType == triPointRef::NONE)
{
vector sampleNearestVec = (sample - nearestPoint);
scalar magSampleNearestVec = mag(sampleNearestVec);
// Nearest to face interior. Use faceNormal to determine side
scalar c = (sample - nearestPoint) & surf.faceNormals()[nearestFaceI];
scalar c = sampleNearestVec & surf.faceNormals()[nearestFaceI];
c /= max
(
VSMALL,
mag(sample - nearestPoint)*mag(surf.faceNormals()[nearestFaceI])
);
// If the sample is essentially on the face, do not check for
// it being perpendicular.
if (mag(c) < 0.9)
if (magSampleNearestVec > SMALL)
{
FatalErrorIn("triSurfaceTools::surfaceSide")
c /= magSampleNearestVec*mag(surf.faceNormals()[nearestFaceI]);
if (mag(c) < 0.9)
{
FatalErrorIn("triSurfaceTools::surfaceSide")
<< "nearestPoint identified as being on triangle face "
<< "but vector from nearestPoint to sample is not "
<< "perpendicular to the normal." << nl
<< "sample: " << sample << nl
<< "nearestPoint: " << nearestPoint << nl
<< "sample - nearestPoint: " << sample - nearestPoint << nl
<< "normal: " << surf.faceNormals()[nearestFaceI] << nl
<< "mag(sample - nearestPoint): "
<< mag(sample - nearestPoint) << nl
<< "normalised dot product: " << c << nl
<< "triangle vertices: " << nl
<< " " << points[f[0]] << nl
<< " " << points[f[1]] << nl
<< " " << points[f[2]] << nl
<< abort(FatalError);
<< "but vector from nearestPoint to sample is not "
<< "perpendicular to the normal." << nl
<< "sample: " << sample << nl
<< "nearestPoint: " << nearestPoint << nl
<< "sample - nearestPoint: " << sample - nearestPoint << nl
<< "normal: " << surf.faceNormals()[nearestFaceI] << nl
<< "mag(sample - nearestPoint): "
<< mag(sample - nearestPoint) << nl
<< "normalised dot product: " << c << nl
<< "triangle vertices: " << nl
<< " " << points[f[0]] << nl
<< " " << points[f[1]] << nl
<< " " << points[f[2]] << nl
<< abort(FatalError);
}
}
if (c > 0)