adds writeStateComponent method for abstract_particle_set

cpp/particles/interpolation/abstract_particle_set.hpp

@@ -222,14 +222,15 @@ class abstract_particle_set
             return EXIT_SUCCESS;
         }
 
-        int writeStateTriplet(
+        int writeStateChunk(
                 const int i0,
+                const int contiguous_state_chunk,
                 particles_output_sampling_hdf5<partsize_t, particle_rnumber, 3> *particle_sample_writer,
                 const std::string species_name,
                 const std::string field_name,
                 const int iteration)
         {
-            TIMEZONE("abstract_particle_set::writeStateTriplet");
+            TIMEZONE("abstract_particle_set::writeStateChunk");
             assert(i0 >= 0);
             assert(i0 <= this->getStateSize()-3);
             // set file layout
@@ -237,7 +238,7 @@ class abstract_particle_set
             // allocate position array
             std::unique_ptr<particle_rnumber[]> xx = this->extractFromParticleState(0, 3);
             // allocate temporary array
-            std::unique_ptr<particle_rnumber[]> yy = this->extractFromParticleState(i0, i0+3);
+            std::unique_ptr<particle_rnumber[]> yy = this->extractFromParticleState(i0, i0+contiguous_state_chunk);
             particle_sample_writer->template save_dataset<3>(
                     species_name,
                     field_name,
@@ -252,6 +253,38 @@ class abstract_particle_set
             delete[] xx.release();
             return EXIT_SUCCESS;
         }
+
+        int writeStateTriplet(
+                const int i0,
+                particles_output_sampling_hdf5<partsize_t, particle_rnumber, 3> *particle_sample_writer,
+                const std::string species_name,
+                const std::string field_name,
+                const int iteration)
+        {
+            TIMEZONE("abstract_particle_set::writeStateTriplet");
+            return this->writeStateChunk(
+                    i0, 3,
+                    particle_sample_writer,
+                    species_name,
+                    field_name,
+                    iteration);
+        }
+
+        int writeStateComponent(
+                const int i0,
+                particles_output_sampling_hdf5<partsize_t, particle_rnumber, 3> *particle_sample_writer,
+                const std::string species_name,
+                const std::string field_name,
+                const int iteration)
+        {
+            TIMEZONE("abstract_particle_set::writeStateComponent");
+            return this->writeStateChunk(
+                    i0, 1,
+                    particle_sample_writer,
+                    species_name,
+                    field_name,
+                    iteration);
+        }
 };
 
 #endif//ABSTRACT_PARTICLE_SET_HPP