fix rkpm eps, fix paraview read particle info

Author: S-Explorer

Source/DiffusedIB_Parallel.cpp

@@ -735,7 +735,7 @@ void mParticle::ForceSpreading(MultiFab & EulerForce,
                 const auto p_id = p_ptr[i].id(); // lagrangian marker's id
                 const auto id = ids[i];  // particle's id
                 auto loc_ptr = ps[id].location;
-                auto dv = ps[id].dv;
+                auto dv = RKPM_MAP[p_id - 1][0].eps;
                 ForceSpreadingRKPM_cir(p_ptr[i], loc_ptr[0], loc_ptr[1], loc_ptr[2],
                                 fxP_ptr[i], fyP_ptr[i], fzP_ptr[i],
                                 mxP_ptr[i], myP_ptr[i], mzP_ptr[i],

Source/DiffusedIB_Parallel.h

@@ -44,8 +44,8 @@ enum P_ATTR_INT {
 };
 
 enum DELTA_FUNCTION_TYPE{
-    THREE_POINT_IB = 0,
-    FOUR_POINT_IB
+    FOUR_POINT_IB = 0,
+    THREE_POINT_IB
 };
 
 typedef struct {

Source/NavierStokes.cpp

@@ -1174,7 +1174,7 @@ NavierStokes::writePlotFilePost (const std::string& dir,
 
 #ifdef AMREX_PARTICLES
     if(level == parent->finestLevel()){
-        Particles::get_particles()->mContainer->Checkpoint(dir, "LagrangianMarker");
+        Particles::get_particles()->mContainer->Checkpoint(dir, "particles");
     }
 #endif