first commit for post-processing

- the whole structure is ready.
- next step whould be execute methods and then write methods
- post-processing after simulation is not started yet.

src/PostProcessData/region/regionPoints/sphereRegionPoints.cpp

@@ -0,0 +1,31 @@
+#include "sphereRegionPoints.hpp"
+#include "fieldsDataBase.hpp"
+
+pFlow::sphereRegionPoints::sphereRegionPoints
+(
+    const dictionary &dict, 
+    fieldsDataBase &fieldsDataBase
+)
+:
+    regionPoints(dict, fieldsDataBase),
+    sphereRegion_(dict.subDict("sphereInfo")),
+    volume_(sphereRegion_.volume()),
+    diameter_(2*sphereRegion_.radius()),
+    selectedPoints_("selectedPoints")
+{
+}
+
+bool pFlow::sphereRegionPoints::update()
+{
+    const auto points = database().updatePoints();
+    selectedPoints_.clear();
+    for(uint32 i = 0; i < points.size(); ++i)
+    {
+        if( sphereRegion_.isInside(points[i]))
+        {
+            selectedPoints_.push_back(i);
+        }
+    }
+ 
+    return false;
+}