add copy constructor for class PointKernel

src/Mod/Points/App/Points.cpp

@@ -49,6 +49,13 @@ using namespace std;
 
 TYPESYSTEM_SOURCE(Points::PointKernel, Data::ComplexGeoData)
 
+PointKernel::PointKernel(const PointKernel& pts)
+  : _Mtrx(pts._Mtrx)
+  , _Points(pts._Points)
+{
+
+}
+
 std::vector<const char*> PointKernel::getElementTypes(void) const
 {
     std::vector<const char*> temp;

src/Mod/Points/App/Points.h

@@ -58,6 +58,7 @@ public:
     {
         resize(size);
     }
+    PointKernel(const PointKernel&);
     virtual ~PointKernel()
     {
     }