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FunctionSpace/LocalFunctionSpace.cpp

 #include "LocalFunctionSpace.h"
+#include "Exception.h"
 
 LocalFunctionSpace::LocalFunctionSpace(void){
   
@@ -8,3 +9,26 @@ LocalFunctionSpace::~LocalFunctionSpace(void){
   
 }
 
+void LocalFunctionSpace::selectTransform(int form){
+  switch(form){
+  case 0:
+    transform = jac::map;
+    break;
+
+  case 1:
+    transform = jac::grad;
+    break;
+
+  case 2:
+    throw Exception("Mapping of 2-form not implemented");
+    break;
+
+  case 3:
+    throw Exception("Mapping of 3-form not implemented");
+    break;
+ 
+  default:
+    throw Exception ("Unknow %d-form", from);
+    break;
+  }
+}

FunctionSpace/LocalFunctionSpace.h

@@ -8,13 +8,24 @@
    This class is the @em mother (by @em inheritence) of all@n
    Local Function Spaces.@n
 
-   A Local Function Space is a Basis on which we can interpolate on.
+   A Local Function Space is a Basis on which we can interpolate on.@n
+   In order to interpolate, a Local Function Space shall colaborate
+   with a Jacobian.
  */
 
+#include "Jacobian.h"
+
 class LocalFunctionSpace{
  protected:
+  typedef fullVector<double>(Jacobian::*JacMethod)
+    (const fullVector<double>&) const;
+
   bool      scalar;
   int       size;
+  int       type;
+
+  Jacobian* jac;
+  JacMethod transform;
 
  public:
   //! Deletes this LocalFunctionSpace
@@ -33,10 +44,24 @@ class LocalFunctionSpace{
   //! @return Returns the size of the Basis used
   int  getSize(void) const;
 
+  //! @return Returns the type of the Basis used
+  //! @li 0 for 0-form
+  //! @li 1 for 1-form
+  //! @li 2 for 2-form
+  //! @li 3 for 3-form
+  //! @todo Check if the 'form numbering' is good
+  int  getType(void) const;
+
  protected:
   //! Instantiate a new LocalFunctionSpace
   //! @warning Users can't instantiate a LocalFunctionSpace
   LocalFunctionSpace(void);
+
+  //! Selects the right transorm method for the Jacobian
+  //! @param form The @em type of the Basis used
+  void selectTransform(int form);
+
+  
 };
 
 //////////////////////
@@ -51,4 +76,7 @@ inline int LocalFunctionSpace::getSize(void) const{
   return size;
 }
 
+inline int LocalFunctionSpace::getType(void) const{
+  return type;
+}
 #endif

FunctionSpace/LocalFunctionSpaceScalar.cpp

@@ -18,3 +18,22 @@ LocalFunctionSpaceScalar::~LocalFunctionSpaceScalar(void){
   // for deleting 'basis'
   // It's the Basis job
 }
+
+double LocalFunctionSpaceScalar::interpolate
+(const fullVector<double>& coef,
+ double x, double y, double z) const{
+  
+  if(coef.size() > size)
+    throw Exception("To many coeficients for interpolation");
+
+  if(coef.size() < size)
+    throw Exception("Not enough coeficients for interpolation");
+
+  double res = 0;
+
+  for(int i = 0; i < size; ++i){
+    
+  }
+
+  return res;
+}