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;
+}

src/PostprocessData/region/regionPoints/lineRegionPoints/lineRegionPoints.hpp

@@ -0,0 +1,106 @@
+/*------------------------------- phasicFlow ---------------------------------
+      O        C enter of
+     O O       E ngineering and
+    O   O      M ultiscale modeling of
+   OOOOOOO     F luid flow
+------------------------------------------------------------------------------
+  Copyright (C): www.cemf.ir
+  email: hamid.r.norouzi AT gmail.com
+------------------------------------------------------------------------------
+Licence:
+  This file is part of phasicFlow code. It is a free software for simulating
+  granular and multiphase flows. You can redistribute it and/or modify it under
+  the terms of GNU General Public License v3 or any other later versions.
+
+  phasicFlow is distributed to help others in their research in the field of
+  granular and multiphase flows, but WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+-----------------------------------------------------------------------------*/
+
+#ifndef __lineRegionPoints_hpp__
+#define __lineRegionPoints_hpp__
+
+#include "regionPoints.hpp"
+#include "line.hpp"
+#include "sphere.hpp"
+#include "Vectors.hpp"
+
+namespace pFlow
+{
+
+class lineRegionPoints
+:
+    public regionPoints
+{
+private:
+
+    /// line region for selecting points
+    line                line_;
+
+    /// all sphere regions 
+    Vector<sphere>        sphereRegions_;
+
+    /// center poitns of regions/elements
+    realx3Vector          centerPoints_;
+
+    /// volumes of all elements/regions
+    realVector            volumes_;
+
+    realVector            diameters_;
+
+    /// the point indices that are selected by this region
+    Vector<uint32Vector>  selectedPoints_;
+
+public:
+
+    TypeInfo(line::TYPENAME());
+
+    lineRegionPoints(
+        const dictionary& dict,
+        fieldsDataBase& fieldsDataBase);
+
+    ~lineRegionPoints() override = default;
+
+    uint32 size()const override
+    {
+        return sphereRegions_.size();
+    }
+
+    bool empty()const override
+    {
+        return sphereRegions_.empty();
+    }
+
+    span<const real> volumes()const override
+    {
+        return span<const real>(volumes_.data(), volumes_.size());
+    }
+
+    span<const real> eqDiameters()const override
+    {
+        return span<const real>(diameters_.data(), diameters_.size());
+    }
+
+    span<const realx3> centers()const override
+    {
+        return span<const realx3>(centerPoints_.data(), centerPoints_.size());
+    }
+
+    span<const uint32> indices(uint32 elem)const override;
+    
+
+    bool update() override;
+
+    bool writeToSameTimeFile()const override
+    {
+        return true;
+    }
+
+    bool write(iOstream& os) const override;
+};
+    
+}
+
+
+#endif // __lineRegionPoints_hpp__