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// All rays expressed as start face (local) index end end face (global)
// Pre-size by assuming a certain percentage is visible.
// Maximum length for dynamicList
const label maxDynListLength
(
viewFactorDict.lookupOrDefault<label>("maxDynListLength", 100000)
);
for (label proci = 0; proci < Pstream::nProcs(); proci++)
{
// Shoot rays from me to proci. Note that even if processor has
// 0 faces we still need to call findLine to keep calls synced.
DynamicField<point> start(coarseMesh.nFaces());
DynamicField<point> end(start.size());
DynamicList<label> startIndex(start.size());
DynamicList<label> endIndex(start.size());
DynamicList<label> startAgg(start.size());
DynamicList<label> endAgg(start.size());
const pointField& myFc = remoteCoarseCf[Pstream::myProcNo()];
const vectorField& myArea = remoteCoarseSf[Pstream::myProcNo()];
const labelField& myAgg = remoteCoarseAgg[Pstream::myProcNo()];
const pointField& remoteArea = remoteCoarseSf[proci];
const pointField& remoteFc = remoteCoarseCf[proci];
const labelField& remoteAgg = remoteCoarseAgg[proci];
label i = 0;
label j = 0;
do
{
for (; i < myFc.size(); i++)
{
const point& fc = myFc[i];
const vector& fA = myArea[i];
const label& fAgg = myAgg[i];
for (; j < remoteFc.size(); j++)
{
if (proci != Pstream::myProcNo() || i != j)
{
const point& remFc = remoteFc[j];
const vector& remA = remoteArea[j];
const label& remAgg = remoteAgg[j];
const vector& d = remFc - fc;
if (((d & fA) < 0.) && ((d & remA) > 0))
{
start.append(fc + 0.001*d);
startIndex.append(i);
startAgg.append(globalNumbering.toGlobal(proci, fAgg));
end.append(fc + 0.999*d);
label globalI = globalNumbering.toGlobal(proci, j);
endIndex.append(globalI);
endAgg.append(globalNumbering.toGlobal(proci, remAgg));
if (startIndex.size() > maxDynListLength)
{
FatalErrorInFunction
<< "Dynamic list need from capacity."
<< "Actual size maxDynListLength : "
<< maxDynListLength
<< abort(FatalError);
}
}
}
}
if (j == remoteFc.size())
{
j = 0;
}
}
} while (returnReduce(i < myFc.size(), orOp<bool>()));
List<pointIndexHit> hitInfo(startIndex.size());
surfacesMesh.findLine(start, end, hitInfo);
// Return hit global agglo index
labelList aggHitIndex;
surfacesMesh.getField(hitInfo, aggHitIndex);
DynamicList<label> dRayIs;
// Collect the rays which has not abstacle in bettween in rayStartFace
// and rayEndFace. If the ray hit itself get stored in dRayIs
forAll(hitInfo, rayI)
{
if (!hitInfo[rayI].hit())
{
rayStartFace.append(startIndex[rayI]);
rayEndFace.append(endIndex[rayI]);
}
else if (aggHitIndex[rayI] == startAgg[rayI])
{
dRayIs.append(rayI);
}
}
start.clear();
// Continue rays which hit themself. If they hit the target
// agglomeration are added to rayStartFace and rayEndFace
bool firstLoop = true;
DynamicField<point> startHitItself;
DynamicField<point> endHitItself;
label iter = 0;
do
{
labelField rayIs;
rayIs.transfer(dRayIs);
dRayIs.clear();
forAll(rayIs, rayI)
{
const label rayID = rayIs[rayI];
label hitIndex = -1;
if (firstLoop)
{
hitIndex = rayIs[rayI];
}
else
{
hitIndex = rayI;
}
if (hitInfo[hitIndex].hit())
{
if (aggHitIndex[hitIndex] == startAgg[rayID])
{
const vector& endP = end[rayID];
const vector& startP = hitInfo[hitIndex].hitPoint();
const vector& d = endP - startP;
startHitItself.append(startP + 0.01*d);
endHitItself.append(startP + 1.01*d);
dRayIs.append(rayID);
}
else if (aggHitIndex[hitIndex] == endAgg[rayID])
{
rayStartFace.append(startIndex[rayID]);
rayEndFace.append(endIndex[rayID]);
}
}
}
hitInfo.clear();
hitInfo.resize(dRayIs.size());
surfacesMesh.findLine(startHitItself, endHitItself, hitInfo);
surfacesMesh.getField(hitInfo, aggHitIndex);
endHitItself.clear();
startHitItself.clear();
firstLoop = false;
iter ++;
} while (returnReduce(hitInfo.size(), orOp<bool>()) > 0 && iter < 10);
startIndex.clear();
end.clear();
endIndex.clear();
startAgg.clear();
endAgg.clear();
}
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