From aa52562bf033458137f2c645a0e770938c51551d Mon Sep 17 00:00:00 2001
From: Eduardo DAVILA <eduardo.davila@creatis.insa-lyon.fr>
Date: Mon, 3 May 2021 11:48:44 +0200
Subject: [PATCH] #3461 Bug box VectorDoubleFilter with empty vectors

---
 packages/std/src/bbstdVectorFilterDouble.cxx | 57 +++++++++++---------
 1 file changed, 31 insertions(+), 26 deletions(-)

diff --git a/packages/std/src/bbstdVectorFilterDouble.cxx b/packages/std/src/bbstdVectorFilterDouble.cxx
index 30798df..c9b6fec 100644
--- a/packages/std/src/bbstdVectorFilterDouble.cxx
+++ b/packages/std/src/bbstdVectorFilterDouble.cxx
@@ -28,6 +28,8 @@ void VectorFilterDouble::Process()
 //    * TYPE is the C++ type of the input/output
 //      (the one provided in the attribute 'type' of the tag 'input')
 
+printf("EED VectorFilterDouble::Process  bbGetInputType()=%d\n", bbGetInputType() );
+
 	std::vector< std::vector<double> * >  pLstVec;  
 	std::vector< std::vector<double> * >  pLstVecOut;  
 	std::vector<double> In0 = bbGetInputIn0();
@@ -77,36 +79,39 @@ void VectorFilterDouble::Process()
 
 	if (bbGetInputType()==0)  // Erase duplicate lines
 	{
-		bool okSizeVec=true;
-		int ipLstvec; 
-		for (ipLstvec=1;ipLstvec<pLstVec.size();ipLstvec++)
-		{
-			if ( (*pLstVec[ipLstvec]).size()!=(*pLstVec[0]).size() )  { okSizeVec=false; }
-		}
-		if ( okSizeVec==false)
+		if (bbGetInputIn0().size()!=0)  // At least one element 
 		{
-			printf("EED VectorFilterDouble::Process WARNING! vectors are not of the same size.\n");
-		} else {
-			int iLine;
-			int ipLstvec2; 
-			bool okLine;
-			for (iLine=0 ; iLine < (*pLstVec[0]).size() ; iLine++ ) 
+			bool okSizeVec=true;
+			int ipLstvec; 
+			for (ipLstvec=1;ipLstvec<pLstVec.size();ipLstvec++)
 			{
-				okLine=false;
-				for ( ipLstvec2=0 ; ipLstvec2<pLstVec.size() ; ipLstvec2++)
-				{
-					if ( (*pLstVec[ipLstvec2])[iLine]!=(*pLstVec[ipLstvec2])[iLine-1] )  { okLine=true; }
-				} // for ipLstVec2
-						
-				if ( (okLine==true) || (iLine==0) ) 
+				if ( (*pLstVec[ipLstvec]).size()!=(*pLstVec[0]).size() )  { okSizeVec=false; }
+			}
+			if ( okSizeVec==false)
+			{
+				printf("EED VectorFilterDouble::Process WARNING! vectors are not of the same size.\n");
+			} else {
+				int iLine;
+				int ipLstvec2; 
+				bool okLine;
+				for (iLine=0 ; iLine < (*pLstVec[0]).size() ; iLine++ ) 
 				{
-					for (ipLstvec2=0 ; ipLstvec2<pLstVec.size() ; ipLstvec2++)
+					okLine=false;
+					for ( ipLstvec2=0 ; ipLstvec2<pLstVec.size() ; ipLstvec2++)
+					{
+						if ( (*pLstVec[ipLstvec2])[iLine]!=(*pLstVec[ipLstvec2])[iLine-1] )  { okLine=true; }
+					} // for ipLstVec2
+							
+					if ( (okLine==true) || (iLine==0) ) 
 					{
-						(*pLstVecOut[ipLstvec2]).push_back( (*pLstVec[ipLstvec2])[iLine] );
-					} // for
-				} // if okLine
-			} // for iLine
-		} // if okSizeVec
+						for (ipLstvec2=0 ; ipLstvec2<pLstVec.size() ; ipLstvec2++)
+						{
+							(*pLstVecOut[ipLstvec2]).push_back( (*pLstVec[ipLstvec2])[iLine] );
+						} // for
+					} // if okLine
+				} // for iLine
+			} // if okSizeVec
+		} // bbGetInputIn0()  size
 	} // Type==0
 
 
-- 
2.45.1