Merge pull request #1840 from mathdugre/1838/enh

ENH: use prefix from --output for --write-interval-volumes

Examples/antsDisplacementAndVelocityFieldRegistrationCommandIterationUpdate.h

@@ -196,6 +196,12 @@ class antsDisplacementAndVelocityFieldRegistrationCommandIterationUpdate final :
 
   itkSetMacro(CurrentStageNumber, unsigned int);
 
+  void
+  SetOutputPrefix(const std::string & outputPrefix)
+  {
+    this->m_OutputPrefix = outputPrefix;
+  }
+
   void
   SetNumberOfIterations(const std::vector<unsigned int> & iterations)
   {
@@ -446,7 +452,7 @@ class antsDisplacementAndVelocityFieldRegistrationCommandIterationUpdate final :
     const unsigned int curLevel = filter->GetCurrentLevel();
     const unsigned int curIter = filter->GetCurrentIteration();
     std::stringstream  currentFileName;
-    currentFileName << "Stage" << this->m_CurrentStageNumber + 1 << "_level" << curLevel + 1;
+    currentFileName << this->m_OutputPrefix << "Stage" << this->m_CurrentStageNumber + 1 << "_level" << curLevel + 1;
     /*
      The name arrangement of written files are important to us.
      To prevent: "Iter1 Iter10 Iter2 Iter20" we use the following style.
@@ -500,6 +506,7 @@ class antsDisplacementAndVelocityFieldRegistrationCommandIterationUpdate final :
    */
   // itk::WeakPointer<OptimizerType>   m_Optimizer;
 
+  std::string                       m_OutputPrefix;
   std::vector<unsigned int>         m_NumberOfIterations;
   std::ostream *                    m_LogStream;
   itk::TimeProbe                    m_clock;

Examples/itkantsRegistrationHelper.hxx

@@ -2165,6 +2165,7 @@ RegistrationHelper<TComputeType, VImageDimension>::DoRegistration()
         displacementFieldRegistrationObserver2->SetNumberOfIterations(currentStageIterations);
         displacementFieldRegistrationObserver2->SetOrigFixedImage(this->m_Metrics[0].m_FixedImage);
         displacementFieldRegistrationObserver2->SetOrigMovingImage(this->m_Metrics[0].m_MovingImage);
+        displacementFieldRegistrationObserver2->SetOutputPrefix(this->m_OutputPrefix);
         if (this->m_PrintSimilarityMeasureInterval != 0)
         {
           displacementFieldRegistrationObserver2->SetComputeFullScaleCCInterval(this->m_PrintSimilarityMeasureInterval);