--- trunk/OOPSE/libmdtools/Integrator.cpp	2004/06/01 17:15:43	1212
+++ trunk/OOPSE/libmdtools/Integrator.cpp	2004/06/04 03:15:31	1234
@@ -1,7 +1,7 @@
 #include <iostream>
 #include <stdlib.h>
 #include <math.h>
-
+#include "Rattle.hpp"
 #ifdef IS_MPI
 #include "mpiSimulation.hpp"
 #include <unistd.h>
@@ -32,7 +32,17 @@ template<typename T> Integrator<T>::Integrator(SimInfo
 
   nAtoms = info->n_atoms;
   integrableObjects = info->integrableObjects;
- 
+
+  rattle = new RattleFramework(info);
+
+  if(rattle == NULL){
+    sprintf(painCave.errMsg,
+      "Integrator::Intergrator() Error: Memory allocation error for RattleFramework" );
+    painCave.isFatal = 1;
+    simError();
+  }
+  
+/*
   // check for constraints
 
   constrainedA = NULL;
@@ -45,10 +55,13 @@ template<typename T> Integrator<T>::Integrator(SimInfo
   nConstrained = 0;
 
   checkConstraints();
-
+*/
 }
 
 template<typename T> Integrator<T>::~Integrator(){
+  if (rattle != NULL)
+    delete rattle;
+/*
   if (nConstrained){
     delete[] constrainedA;
     delete[] constrainedB;
@@ -57,8 +70,10 @@ template<typename T> Integrator<T>::~Integrator(){
     delete[] moved;
     delete[] oldPos;
   }
+*/
 }
 
+/*
 template<typename T> void Integrator<T>::checkConstraints(void){
   isConstrained = 0;
 
@@ -151,8 +166,8 @@ template<typename T> void Integrator<T>::checkConstrai
 
   delete[] temp_con;
 }
+*/
 
-
 template<typename T> void Integrator<T>::integrate(void){
 
   double runTime = info->run_time;
@@ -192,13 +207,12 @@ template<typename T> void Integrator<T>::integrate(voi
   // initialize the forces before the first step
 
   calcForce(1, 1);
-  
-  if (nConstrained){
-    preMove();
-    constrainA();
-    calcForce(1, 1);
-    constrainB();
-  }
+
+  //execute constraint algorithm to make sure at the very beginning the system is constrained  
+  rattle->doPreConstraint();
+  rattle->doRattleA();
+  calcForce(1, 1);
+  rattle->doRattleB();
   
   if (info->setTemp){
     thermalize();
@@ -255,8 +269,6 @@ template<typename T> void Integrator<T>::integrate(voi
 
     if (info->getTime() >= currStatus){
       statOut->writeStat(info->getTime());
-      if (info->useSolidThermInt || info->useLiquidThermInt)
-	statOut->writeRaw(info->getTime());
       calcPot = 0;
       calcStress = 0;
       currStatus += statusTime;
@@ -296,7 +308,8 @@ template<typename T> void Integrator<T>::integrateStep
   startProfile(pro3);
 #endif //profile
 
-  preMove();
+  //save old state (position, velocity etc)
+  rattle->doPreConstraint();
 
 #ifdef PROFILE
   endProfile(pro3);
@@ -392,9 +405,7 @@ template<typename T> void Integrator<T>::moveA(void){
     }
   }
 
-  if (nConstrained){
-    constrainA();
-  }
+  rattle->doRattleA();
 }
 
 
@@ -435,11 +446,10 @@ template<typename T> void Integrator<T>::moveB(void){
     }
   }
 
-  if (nConstrained){
-    constrainB();
-  }
+  rattle->doRattleB();
 }
 
+/*
 template<typename T> void Integrator<T>::preMove(void){
   int i, j;
   double pos[3];
@@ -698,7 +708,7 @@ template<typename T> void Integrator<T>::constrainB(vo
     simError();
   }
 }
-
+*/
 template<typename T> void Integrator<T>::rotationPropagation
 ( StuntDouble* sd, double ji[3] ){