Foam::point Foam::directionInfo::eMid
(
const primitiveMesh& mesh,
const label edgeI
)
{
const edge& e = mesh.edges()[edgeI];
return
0.5
* (mesh.points()[e.start()] + mesh.points()[e.end()]);
}
// Determine for each edge the intersection point. Calculates
// - cutPoints_ : coordinates of all intersection points
// - edgePoint : per edge -1 or the index into cutPoints
void Foam::cuttingPlane::intersectEdges
(
const primitiveMesh& mesh,
const scalarField& dotProducts,
List<label>& edgePoint
)
{
// Use the dotProducts to find out the cut edges.
const edgeList& edges = mesh.edges();
const pointField& points = mesh.points();
// Per edge -1 or the label of the intersection point
edgePoint.setSize(edges.size());
DynamicList<point> dynCuttingPoints(4*cutCells_.size());
forAll(edges, edgeI)
{
const edge& e = edges[edgeI];
if
(
(dotProducts[e[0]] < zeroish && dotProducts[e[1]] > positive)
|| (dotProducts[e[1]] < zeroish && dotProducts[e[0]] > positive)
)
{
// Edge is cut
edgePoint[edgeI] = dynCuttingPoints.size();
const point& p0 = points[e[0]];
const point& p1 = points[e[1]];
scalar alpha = lineIntersect(linePointRef(p0, p1));
if (alpha < zeroish)
{
dynCuttingPoints.append(p0);
}
else if (alpha >= 1.0)
{
dynCuttingPoints.append(p1);
}
else
{
dynCuttingPoints.append((1-alpha)*p0 + alpha*p1);
}
}
else
{
edgePoint[edgeI] = -1;
}
}
this->storedPoints().transfer(dynCuttingPoints);
}
// Calculate some edge statistics on mesh. Return min. edge length over all
// directions but exclude component (0=x, 1=y, 2=z, other=none)
scalar getEdgeStats(const primitiveMesh& mesh, const direction excludeCmpt)
{
label nX = 0;
label nY = 0;
label nZ = 0;
scalar minX = GREAT;
scalar maxX = -GREAT;
vector x(1, 0, 0);
scalar minY = GREAT;
scalar maxY = -GREAT;
vector y(0, 1, 0);
scalar minZ = GREAT;
scalar maxZ = -GREAT;
vector z(0, 0, 1);
scalar minOther = GREAT;
scalar maxOther = -GREAT;
const edgeList& edges = mesh.edges();
forAll(edges, edgeI)
{
const edge& e = edges[edgeI];
vector eVec(e.vec(mesh.points()));
scalar eMag = mag(eVec);
eVec /= eMag;
if (mag(eVec & x) > 1-edgeTol)
{
minX = min(minX, eMag);
maxX = max(maxX, eMag);
nX++;
}
else if (mag(eVec & y) > 1-edgeTol)
{
minY = min(minY, eMag);
maxY = max(maxY, eMag);
nY++;
}
else if (mag(eVec & z) > 1-edgeTol)
{
minZ = min(minZ, eMag);
maxZ = max(maxZ, eMag);
nZ++;
}
else
{
minOther = min(minOther, eMag);
maxOther = max(maxOther, eMag);
}
}
Info<< "Mesh bounding box:" << boundBox(mesh.points()) << nl << nl
<< "Mesh edge statistics:" << nl
<< " x aligned : number:" << nX << "\tminLen:" << minX
<< "\tmaxLen:" << maxX << nl
<< " y aligned : number:" << nY << "\tminLen:" << minY
<< "\tmaxLen:" << maxY << nl
<< " z aligned : number:" << nZ << "\tminLen:" << minZ
<< "\tmaxLen:" << maxZ << nl
<< " other : number:" << mesh.nEdges() - nX - nY - nZ
<< "\tminLen:" << minOther
<< "\tmaxLen:" << maxOther << nl << endl;
if (excludeCmpt == 0)
{
return min(minY, min(minZ, minOther));
}
else if (excludeCmpt == 1)
{
return min(minX, min(minZ, minOther));
}
else if (excludeCmpt == 2)
{
return min(minX, min(minY, minOther));
}
else
{
return min(minX, min(minY, min(minZ, minOther)));
}
}
void writePointSet
(
const bool binary,
const primitiveMesh& mesh,
const topoSet& set,
const fileName& fileName
)
{
std::ofstream pStream(fileName.c_str());
pStream
<< "# vtk DataFile Version 2.0" << std::endl
<< set.name() << std::endl;
if (binary)
{
pStream << "BINARY" << std::endl;
}
else
{
pStream << "ASCII" << std::endl;
}
pStream << "DATASET POLYDATA" << std::endl;
//------------------------------------------------------------------
//
// Write topology
//
//------------------------------------------------------------------
labelList pointLabels(set.toc());
pointField setPoints(mesh.points(), pointLabels);
// Write points
pStream << "POINTS " << pointLabels.size() << " float" << std::endl;
DynamicList<floatScalar> ptField(3*pointLabels.size());
writeFuns::insert(setPoints, ptField);
writeFuns::write(pStream, binary, ptField);
//-----------------------------------------------------------------
//
// Write data
//
//-----------------------------------------------------------------
// Write pointID
pStream
<< "POINT_DATA " << pointLabels.size() << std::endl
<< "FIELD attributes 1" << std::endl;
// Cell ids first
pStream << "pointID 1 " << pointLabels.size() << " int" << std::endl;
writeFuns::write(pStream, binary, pointLabels);
}
// Calculate some edge statistics on mesh.
void printEdgeStats(const primitiveMesh& mesh)
{
label nX = 0;
label nY = 0;
label nZ = 0;
scalar minX = GREAT;
scalar maxX = -GREAT;
vector x(1, 0, 0);
scalar minY = GREAT;
scalar maxY = -GREAT;
vector y(0, 1, 0);
scalar minZ = GREAT;
scalar maxZ = -GREAT;
vector z(0, 0, 1);
scalar minOther = GREAT;
scalar maxOther = -GREAT;
const edgeList& edges = mesh.edges();
forAll (edges, edgeI)
{
const edge& e = edges[edgeI];
vector eVec(e.vec(mesh.points()));
scalar eMag = mag(eVec);
eVec /= eMag;
if (mag(eVec & x) > 1 - edgeTol)
{
minX = min(minX, eMag);
maxX = max(maxX, eMag);
nX++;
}
else if (mag(eVec & y) > 1 - edgeTol)
{
minY = min(minY, eMag);
maxY = max(maxY, eMag);
nY++;
}
else if (mag(eVec & z) > 1 - edgeTol)
{
minZ = min(minZ, eMag);
maxZ = max(maxZ, eMag);
nZ++;
}
else
{
minOther = min(minOther, eMag);
maxOther = max(maxOther, eMag);
}
}
Pout<< "Mesh edge statistics:" << endl
<< " x aligned : number:" << nX << "\tminLen:" << minX
<< "\tmaxLen:" << maxX << endl
<< " y aligned : number:" << nY << "\tminLen:" << minY
<< "\tmaxLen:" << maxY << endl
<< " z aligned : number:" << nZ << "\tminLen:" << minZ
<< "\tmaxLen:" << maxZ << endl
<< " other : number:" << mesh.nEdges() - nX - nY - nZ
<< "\tminLen:" << minOther
<< "\tmaxLen:" << maxOther << endl << endl;
}