The main structure is tested. functons like execute and write are added and tested.

other components are left

src/PostprocessData/region/regionPoints/lineRegionPoints/lineRegionPoints.cpp

@@ -0,0 +1,100 @@
+#include "lineRegionPoints.hpp"
+#include "fieldsDataBase.hpp"
+
+pFlow::lineRegionPoints::lineRegionPoints
+(
+    const dictionary &dict, 
+    fieldsDataBase &fieldsDataBase
+)
+:
+    regionPoints(dict, fieldsDataBase),
+    line_(dict.subDict("lineInfo")),
+    centerPoints_("centerPoints"),
+    volumes_("volumes"),
+    selectedPoints_("selectedPoints")
+{
+    const auto& lDict = dict.subDict("lineInfo");
+    uint32 nPoints = lDict.getValMax<uint32>("numPoints",2);
+    realList raddi;
+
+    if( lDict.containsDataEntry("radii"))
+    {
+        raddi = lDict.getVal<realList>("radii");
+    }
+    else
+    {
+        auto r = lDict.getVal<real>("radius");
+        raddi = realList(nPoints, r);
+    }
+
+    if(raddi.size() != nPoints)
+    {
+        fatalErrorInFunction
+            << "The number elements in of radii list should be equal to the number of points"<<endl;
+            fatalExit;
+    }
+    
+    sphereRegions_.resize(nPoints, sphere(realx3(0,0,0),1));
+    centerPoints_.resize(nPoints);
+    volumes_.resize(nPoints);
+    selectedPoints_.resize(nPoints);
+    real dt = 1.0/(nPoints-1);
+    for(uint32 i = 0; i < nPoints; ++i)
+    {
+        centerPoints_[i] = line_.point(i*dt);
+        sphereRegions_[i] = pFlow::sphere(centerPoints_[i], raddi[i]);
+        volumes_[i] = sphereRegions_[i].volume();
+        diameters_[i] = 2*sphereRegions_[i].radius();
+    }
+}
+
+pFlow::span<const pFlow::uint32> pFlow::lineRegionPoints::indices(uint32 elem) const
+{
+    if(elem>=size())
+    {
+        fatalErrorInFunction
+            << "The element index is out of range. elem: " << elem
+            << " size: " << size() << endl;
+        fatalExit;
+    }
+    
+    return span<const uint32>(selectedPoints_[elem].data(), selectedPoints_[elem].size());
+}
+
+bool pFlow::lineRegionPoints::update()
+{
+    const auto points = database().updatePoints();
+    for(auto& elem:selectedPoints_)
+    {
+        elem.clear();
+    }
+
+    for(uint32 i = 0; i < points.size(); ++i)
+    {
+        for(uint32 j = 0; j < sphereRegions_.size(); ++j)
+        {
+            if( sphereRegions_[j].isInside(points[i]))
+            {
+                selectedPoints_[j].push_back(i);
+            }
+        }
+    }
+    return true;
+}
+
+bool pFlow::lineRegionPoints::write(iOstream &os) const
+{
+    os <<"# Spheres along a straight line \n";
+    os <<"#  No."<<tab <<"centerPoint" << tab <<"diameter"<<endl;
+    for(uint32 i=0; i< sphereRegions_.size(); ++i)
+    {
+        os <<"# "<<i<<tab<<sphereRegions_[i].center() << tab <<diameters_[i] << '\n';
+    }
+    os<<"time/No. ";
+    for(uint32 i=0; i< sphereRegions_.size(); ++i)
+    {
+        os <<i<<tab;
+    }
+    os <<endl;
+    return true;
+}