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Moved edge processing to a separate function fed by blocks of edge points separated into individual lists. Fixed two logic errors in edge processing.

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This commit is contained in:
graham
2008-09-29 11:56:24 +01:00
parent 8196d88e9f
commit 27f86a8342
4 changed files with 487 additions and 189 deletions
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7
applications/utilities/mesh/generation/CV3DMesher/CV3D.C
View File

@ -164,7 +164,12 @@ void Foam::CV3D::insertGrid()
{
for (int k=0; k<nk; k++)
{
point p1 (x0 + i*delta.x(), y0 + j*delta.y(), z0 + k*delta.z());
point p1
(
x0 + i*delta.x(),
y0 + j*delta.y(),
z0 + k*delta.z()
);
point p2 = p1 + 0.5*delta;

18
applications/utilities/mesh/generation/CV3DMesher/CV3D.H
View File

@ -126,7 +126,6 @@ public:
//- Square of span
scalar span2;
//- Minumum edge-length of the cell size below which protusions
// through the surface are not split
scalar minEdgeLen;
@ -148,6 +147,16 @@ public:
//- point may not be placed
scalar featurePointGuard;
//- Guard distance from a feature edge within which a surface control
//- point may not be placed
scalar featureEdgeGuard;
//- minimum and maximum distances along a feature edge allowed between
//- pairs of points. Eventually these should be able to adapt to local
//- grading requirements.
scalar minEdgeSpacing;
scalar maxEdgeSpacing;
tolerances
(
const dictionary& controlDict,
@ -254,6 +263,13 @@ private:
DynamicList<label>& edgeLabels
) const;
void smoothEdge
(
List<point>& edgePoints,
List<scalar>& edgeDistances,
const label edgeI
) const;
//- Insert point-pairs at the nearest points on the surface to the
// control vertex of dual-cells which intersect the boundary in order
// to provide a boundary-layer mesh.

489
applications/utilities/mesh/generation/CV3DMesher/insertSurfaceNearestPointPairs.C
View File

@ -194,19 +194,14 @@ void Foam::CV3D::smoothEdgePositions
edgeDistances.transfer(copyEdgeDistances);
}
// Process the points along each edge (in blocks of edgeLabel) performing 3
// functions:
// 1: move points away from feature points
// 2: aggregate tight groups of points into one point
// 3: adjust the spacing of remaining points on a pair by pair basis to
// remove excess points
// Create a List to hold each edge, process them individually, then
// recombine the edges into a single list.
// part 1
List<List<point> > edgePointIndividualLists(edgeLabelJumps.size());
{
DynamicList<point> tempEdgePoints(edgePoints.size());
List<List<scalar> > edgeDistanceIndividualLists(edgeLabelJumps.size());
DynamicList<label> tempEdgeLabels(edgeLabels.size());
List<label> edgeLabelIndividualList(edgeLabelJumps.size());
forAll(edgeLabelJumps, eLJ)
{
@ -225,9 +220,71 @@ void Foam::CV3D::smoothEdgePositions
length = edgeLabelJumps[eLJ + 1] - start;
}
List<point> edgePointBlock(SubList<point>(edgePoints, length, start));
edgePointIndividualLists[eLJ] = SubList<point>
(
edgePoints,
length,
start
);
List<scalar> edgeDistanceBlock(SubList<scalar>(edgeDistances, length, start));
edgeDistanceIndividualLists[eLJ] = SubList<scalar>
(
edgeDistances,
length,
start
);
edgeLabelIndividualList[eLJ] = edgeI;
}
edgePoints.clear();
edgeDistances.clear();
edgeLabels.clear();
forAll(edgeLabelIndividualList, e)
{
label edgeI = edgeLabelIndividualList[e];
smoothEdge
(
edgePointIndividualLists[e],
edgeDistanceIndividualLists[e],
edgeI
);
const List<point>& tempEdgePoints = edgePointIndividualLists[e];
forAll(tempEdgePoints, tEP)
{
edgePoints.append(tempEdgePoints[tEP]);
edgeLabels.append(edgeI);
}
}
edgePoints.shrink();
edgeLabels.shrink();
}
void Foam::CV3D::smoothEdge
(
List<point>& edgePoints,
List<scalar>& edgeDistances,
const label edgeI
) const
{
const pointField& localPts = qSurf_.localPoints();
const edgeList& edges = qSurf_.edges();
// Process the points along each edge (in blocks of edgeLabel) performing 3
// functions:
// 1: move points away from feature points
// 2: aggregate tight groups of points into one point
// 3: adjust the spacing of remaining points on a pair by pair basis to
// remove excess points and add points to long uncontrolled spans.
const edge& e(edges[edgeI]);
@ -240,20 +297,27 @@ void Foam::CV3D::smoothEdgePositions
if (edgeLength < 2*tols_.featurePointGuard)
{
Info<< "edge " << edgeI
<< " is too short with respect to the featurePointGuard distance "
<< "to allow edge control points to be placed."
<< " is too short with respect to the featurePointGuard "
<< "distance to allow edge control points to be placed."
<< nl << "Edge length = " << edgeLength
<< nl <<endl;
return;
}
else
{
forAll (edgeDistanceBlock, eDB)
// part 1
{
DynamicList<point> tempEdgePoints;
bool startGuardPlaced = false;
bool endGuardPlaced = false;
const scalar& edgeDist = edgeDistanceBlock[eDB];
forAll (edgePoints, eP)
{
const point& edgePoint = edgePoints[eP];
const scalar& edgeDist = edgeDistances[eP];
if
(
@ -263,12 +327,10 @@ void Foam::CV3D::smoothEdgePositions
{
tempEdgePoints.append
(
eStart + (edgePointBlock[eDB] - eStart)
eStart + (edgePoint - eStart)
* tols_.featurePointGuard/edgeDist
);
tempEdgeLabels.append(edgeI);
startGuardPlaced = true;
}
else if
@ -279,117 +341,61 @@ void Foam::CV3D::smoothEdgePositions
{
tempEdgePoints.append
(
eEnd + (edgePointBlock[eDB] - eEnd)
eEnd + (edgePoint - eEnd)
* tols_.featurePointGuard/(edgeLength - edgeDist)
);
tempEdgeLabels.append(edgeI);
endGuardPlaced = true;
}
else
else if
(
edgeDist > tols_.featurePointGuard
&& edgeDist < (edgeLength - tols_.featurePointGuard)
)
{
tempEdgePoints.append(edgePointBlock[eDB]);
tempEdgeLabels.append(edgeI);
}
}
tempEdgePoints.append(edgePoint);
}
}
edgePoints.transfer(tempEdgePoints.shrink());
edgeLabels.transfer(tempEdgeLabels.shrink());
}
// If no points are left on the edges then do not progress any further.
if (!edgePoints.size())
{
return;
}
// Re-establish the correct distances and jumps
edgeDistances.clear();
// Recalculate edge distances.
edgeDistances.setSize(edgePoints.size());
forAll(edgeDistances, eD)
{
const point& edgeStart = localPts[edges[edgeLabels[eD]].start()];
edgeDistances[eD] = mag(edgeStart - edgePoints[eD]);
edgeDistances[eD] = mag(eStart - edgePoints[eD]);
}
edgeLabelJumps.clear();
// Force first edgeLabel to be a jump
edgeLabelJumps.append(0);
for (label eL = 1; eL < edgeLabels.size(); eL++)
{
if (edgeLabels[eL] > edgeLabels[eL-1])
{
edgeLabelJumps.append(eL);
}
}
edgeLabelJumps.shrink();
// part 2
{
DynamicList<point> tempEdgePoints(edgePoints.size());
DynamicList<label> tempEdgeLabels(edgeLabels.size());
forAll(edgeLabelJumps, eLJ)
{
label start = edgeLabelJumps[eLJ];
label edgeI = edgeLabels[start];
label length;
if (eLJ == edgeLabelJumps.size() - 1)
{
length = edgeLabels.size() - start;
}
else
{
length = edgeLabelJumps[eLJ + 1] - start;
}
List<point> edgePointBlock(SubList<point>(edgePoints, length, start));
List<scalar> edgeDistanceBlock(SubList<scalar>(edgeDistances, length, start));
DynamicList<point> tempEdgePoints;
label groupSize = 0;
point newEdgePoint(vector::zero);
if (edgeDistanceBlock.size() == 1)
if (edgePoints.size() == 1)
{
tempEdgePoints.append(edgePointBlock[0]);
tempEdgeLabels.append(edgeI);
tempEdgePoints.append(edgePoints[0]);
}
else if ((edgeDistanceBlock[1] - edgeDistanceBlock[0]) > tols_.edgeGroupSpacing)
else if
(
(edgeDistances[1] - edgeDistances[0]) > tols_.edgeGroupSpacing
)
{
tempEdgePoints.append(edgePointBlock[0]);
tempEdgeLabels.append(edgeI);
tempEdgePoints.append(edgePoints[0]);
}
for (label eDB = 1; eDB < edgeDistanceBlock.size(); eDB++)
for (label eP = 1; eP < edgePoints.size(); eP++)
{
const scalar& edgeDist = edgeDistanceBlock[eDB];
const scalar& previousEdgeDist = edgeDistanceBlock[eDB - 1];
const scalar& edgeDist = edgeDistances[eP];
const scalar& previousEdgeDist = edgeDistances[eP - 1];
if ((edgeDist - previousEdgeDist) < tols_.edgeGroupSpacing)
{
newEdgePoint += edgePointBlock[eDB];
newEdgePoint += edgePoints[eP];
groupSize++;
}
@ -401,28 +407,256 @@ void Foam::CV3D::smoothEdgePositions
tempEdgePoints.append(newEdgePoint);
tempEdgeLabels.append(edgeI);
newEdgePoint = vector::zero;
groupSize = 0;
}
else
{
tempEdgePoints.append(edgePointBlock[eDB]);
tempEdgeLabels.append(edgeI);
}
tempEdgePoints.append(edgePoints[eP]);
}
}
edgePoints.transfer(tempEdgePoints.shrink());
edgeLabels.transfer(tempEdgeLabels.shrink());
}
}
// {
// DynamicList<point> tempEdgePoints(edgePoints.size());
// DynamicList<label> tempEdgeLabels(edgeLabels.size());
// forAll(edgeLabelJumps, eLJ)
// {
// label start = edgeLabelJumps[eLJ];
// label edgeI = edgeLabels[start];
// label length;
// if (eLJ == edgeLabelJumps.size() - 1)
// {
// length = edgeLabels.size() - start;
// }
// else
// {
// length = edgeLabelJumps[eLJ + 1] - start;
// }
// List<point> edgePointBlock
// (
// SubList<point>(edgePoints, length, start)
// );
// List<scalar> edgeDistanceBlock
// (
// SubList<scalar>(edgeDistances, length, start)
// );
// const edge& e(edges[edgeI]);
// const point& eStart(localPts[e.start()]);
// const point& eEnd(localPts[e.end()]);
// scalar edgeLength = mag(eStart - eEnd);
// if (edgeLength < 2*tols_.featurePointGuard)
// {
// Info<< "edge " << edgeI
// << " is too short with respect to the featurePointGuard "
// << "distance to allow edge control points to be placed."
// << nl << "Edge length = " << edgeLength
// << nl <<endl;
// }
// else
// {
// forAll (edgeDistanceBlock, eDB)
// {
// bool startGuardPlaced = false;
// bool endGuardPlaced = false;
// const scalar& edgeDist = edgeDistanceBlock[eDB];
// if
// (
// edgeDist < tols_.featurePointGuard
// && !startGuardPlaced
// )
// {
// tempEdgePoints.append
// (
// eStart + (edgePointBlock[eDB] - eStart)
// * tols_.featurePointGuard/edgeDist
// );
// tempEdgeLabels.append(edgeI);
// startGuardPlaced = true;
// }
// else if
// (
// edgeDist > (edgeLength - tols_.featurePointGuard)
// && !endGuardPlaced
// )
// {
// tempEdgePoints.append
// (
// eEnd + (edgePointBlock[eDB] - eEnd)
// * tols_.featurePointGuard/(edgeLength - edgeDist)
// );
// tempEdgeLabels.append(edgeI);
// endGuardPlaced = true;
// }
// else
// {
// tempEdgePoints.append(edgePointBlock[eDB]);
// tempEdgeLabels.append(edgeI);
// }
// }
// }
// }
// edgePoints.transfer(tempEdgePoints.shrink());
// edgeLabels.transfer(tempEdgeLabels.shrink());
// }
// // If no points are left on the edges then do not progress any further.
// if (!edgePoints.size())
// {
// return;
// }
// // Re-establish the correct distances and jumps
// edgeDistances.clear();
// edgeDistances.setSize(edgePoints.size());
// forAll(edgeDistances, eD)
// {
// const point& edgeStart = localPts[edges[edgeLabels[eD]].start()];
// edgeDistances[eD] = mag(edgeStart - edgePoints[eD]);
// }
// edgeLabelJumps.clear();
// // Force first edgeLabel to be a jump
// edgeLabelJumps.append(0);
// for (label eL = 1; eL < edgeLabels.size(); eL++)
// {
// if (edgeLabels[eL] > edgeLabels[eL-1])
// {
// edgeLabelJumps.append(eL);
// }
// }
// edgeLabelJumps.shrink();
// // part 2
// {
// DynamicList<point> tempEdgePoints(edgePoints.size());
// DynamicList<label> tempEdgeLabels(edgeLabels.size());
// forAll(edgeLabelJumps, eLJ)
// {
// label start = edgeLabelJumps[eLJ];
// label edgeI = edgeLabels[start];
// label length;
// if (eLJ == edgeLabelJumps.size() - 1)
// {
// length = edgeLabels.size() - start;
// }
// else
// {
// length = edgeLabelJumps[eLJ + 1] - start;
// }
// List<point> edgePointBlock
// (
// SubList<point>(edgePoints, length, start)
// );
// List<scalar> edgeDistanceBlock
// (
// SubList<scalar>(edgeDistances, length, start)
// );
// label groupSize = 0;
// point newEdgePoint(vector::zero);
// if (edgeDistanceBlock.size() == 1)
// {
// tempEdgePoints.append(edgePointBlock[0]);
// tempEdgeLabels.append(edgeI);
// }
// else if
// (
// (edgeDistanceBlock[1] - edgeDistanceBlock[0])
// > tols_.edgeGroupSpacing)
// {
// tempEdgePoints.append(edgePointBlock[0]);
// tempEdgeLabels.append(edgeI);
// }
// for (label eDB = 1; eDB < edgeDistanceBlock.size(); eDB++)
// {
// const scalar& edgeDist = edgeDistanceBlock[eDB];
// const scalar& previousEdgeDist = edgeDistanceBlock[eDB - 1];
// if ((edgeDist - previousEdgeDist) < tols_.edgeGroupSpacing)
// {
// newEdgePoint += edgePointBlock[eDB];
// groupSize++;
// }
// else if (groupSize > 0)
// {
// // A point group has been formed and has finished
// newEdgePoint /= groupSize;
// tempEdgePoints.append(newEdgePoint);
// tempEdgeLabels.append(edgeI);
// newEdgePoint = vector::zero;
// groupSize = 0;
// }
// else
// {
// tempEdgePoints.append(edgePointBlock[eDB]);
// tempEdgeLabels.append(edgeI);
// }
// }
// }
// edgePoints.transfer(tempEdgePoints.shrink());
// edgeLabels.transfer(tempEdgeLabels.shrink());
// }
// }
void Foam::CV3D::insertPointPairs
(
const DynamicList<point>& nearSurfacePoints,
@ -697,10 +931,9 @@ void Foam::CV3D::insertSurfaceNearestPointPairs()
);
}
DynamicList<point> nearSurfacePoints(nSurfacePointsEst);
DynamicList<point> surfacePoints(nSurfacePointsEst);
DynamicList<label> surfaceTris(nSurfacePointsEst);
DynamicList<point> allNearSurfacePoints(nSurfacePointsEst);
DynamicList<point> allSurfacePoints(nSurfacePointsEst);
DynamicList<label> allSurfaceTris(nSurfacePointsEst);
for
(
@ -725,14 +958,44 @@ void Foam::CV3D::insertSurfaceNearestPointPairs()
if (dualCellSurfaceIntersection(vit))
{
nearSurfacePoints.append(vert);
surfacePoints.append(pHit.hitPoint());
surfaceTris.append(pHit.index());
allNearSurfacePoints.append(vert);
allSurfacePoints.append(pHit.hitPoint());
allSurfaceTris.append(pHit.index());
}
}
}
}
pointField surfacePointsForEdges(allSurfacePoints.shrink());
labelList allEdgeLabels;
labelList allEdgeEndPoints;
pointField allEdgePoints;
qSurf_.features().nearestSurfEdge
(
qSurf_.features().featureEdges(),
surfacePointsForEdges,
vector::one * 2.0 * tols_.featureEdgeGuard,
allEdgeLabels,
allEdgeEndPoints,
allEdgePoints
);
DynamicList<point> nearSurfacePoints(nSurfacePointsEst);
DynamicList<point> surfacePoints(nSurfacePointsEst);
DynamicList<label> surfaceTris(nSurfacePointsEst);
forAll(allEdgePoints, eP)
{
if (allEdgeLabels[eP] == -1)
{
nearSurfacePoints.append(allNearSurfacePoints[eP]);
surfacePoints.append(allSurfacePoints[eP]);
surfaceTris.append(allSurfaceTris[eP]);
}
}
nearSurfacePoints.shrink();
surfacePoints.shrink();
surfaceTris.shrink();

14
applications/utilities/mesh/generation/CV3DMesher/tolerances.C
View File

@ -57,6 +57,20 @@ Foam::CV3D::tolerances::tolerances
featurePointGuard
(
readScalar(controlDict.lookup("featurePointGuardCoeff"))*minCellSize
),
featureEdgeGuard
(
readScalar(controlDict.lookup("featureEdgeGuardCoeff"))*minCellSize
),
minEdgeSpacing
(
readScalar(controlDict.lookup("minEdgeSpacingCoeff"))*minCellSize
),
maxEdgeSpacing
(
readScalar(controlDict.lookup("maxEdgeSpacingCoeff"))*minCellSize
)
{}