ENH : add a method IsProjectionRef to get the status of the internal MapProjection

Code/Projections/otbGenericMapProjection.h

@@ -101,6 +101,8 @@ public:
 
   const MapProjectionWrapper* GetMapProjection() const;
 
+  virtual bool IsProjectionDefined();
+
 protected:
   GenericMapProjection();
   virtual ~GenericMapProjection();

Code/Projections/otbGenericMapProjection.txx

@@ -124,6 +124,15 @@ GenericMapProjection<TDirectionOfMapping, TScalarType, NInputDimensions, NOutput
   m_MapProjection->PrintMap();
 }
 
+template<TransformDirection::TransformationDirection TDirectionOfMapping, class TScalarType, unsigned int NInputDimensions,
+    unsigned int NOutputDimensions>
+bool
+GenericMapProjection<TDirectionOfMapping, TScalarType, NInputDimensions, NOutputDimensions>
+::IsProjectionDefined()
+{
+  return (m_MapProjection->GetMapProjection() != NULL);
+}
+
 
 template<TransformDirection::TransformationDirection TDirectionOfMapping, class TScalarType, unsigned int NInputDimensions,
     unsigned int NOutputDimensions>