Fix PointListReader for reading single-element (Point1D case) per line

ChangeLog.md

@@ -74,6 +74,8 @@
     [#1674](https://github.com/DGtal-team/DGtal/pull/1674))
   - Fix of `SurfaceMeshWriter::writeIsoLinesOBJ` 
     (Jacques-Olivier Lachaud, [#1701](https://github.com/DGtal-team/DGtal/pull/1701))
+  - Fix of the `PointListReader::getPolygonsFromInputStream` (Xun Gong,
+    [#1708](https://github.com/DGtal-team/DGtal/pull/1708))
 
 - *Examples*
   - Fix Issue #1675, add missing SymmetricConvexExpander.h file

src/DGtal/io/readers/PointListReader.ih

@@ -85,10 +85,10 @@ DGtal::PointListReader<TPoint>::getPointsFromInputStream (std::istream &in,  std
           valFromStr >> valConverted;
           if(!valFromStr.fail()){
             for(unsigned int j=0; j< TPoint::dimension; j++){
-              if (idx == aVectPosition.at(j) ){
-                nbFound++;
-                p[j]=valConverted;
-              }
+                if (idx == aVectPosition.at(j) ){
+                    nbFound++;
+                    p[j]=valConverted;
+                }
             }
           }
         }
@@ -132,6 +132,7 @@ DGtal::PointListReader<TPoint>::getPolygonsFromInputStream(std::istream & in){
       TPoint p;
       unsigned int index =0;
       while ( in_str.good() ){
+        valStr="";
         std::operator>>(in_str, valStr);
         std::istringstream word_str( valStr );
         word_str >> p[index];

tests/io/readers/testPointListReader.cpp

@@ -91,9 +91,29 @@ bool testPointListReader()
     }
     trace.info()<< std::endl;
   }
-  nbok += (vectPolygons.at(0).size()==2 && vectPolygons.at(1).size()==2 && vectPolygons.at(0).at(0)==Z3i::Point(1,2,3)
-           && vectPolygons.at(0).at(1)==Z3i::Point(4,5,6) && vectPolygons.at(1).at(0)==Z3i::Point(0,0,10)
-           && vectPolygons.at(1).at(1)==Z3i::Point(0,5,5)) ? 1 : 0; 
+  trace.beginBlock ( "Testing reading special 1 dimension elements (polygon of 1 dimension point)..." );
+
+  typedef  PointVector<1, int> Point1D;
+  std::vector< std::vector< Point1D > > vectPt1D = PointListReader< Point1D >::getPolygonsFromFile(filenamePoly);
+  for(unsigned int i=0; i< vectPt1D.size(); i++){
+    std::vector< Point1D > aPolygon  = vectPt1D.at(i);
+    trace.info() << "Polygon " << i << ": " ;
+    for(unsigned int j =0; j <aPolygon.size(); j++){
+      trace.info()<< "Point :" << aPolygon.at(j); 
+    }
+    trace.info()<< std::endl;
+  }
+  Point1D p1, p2, p3, p4, p5, p6; p1[0]=1; p2[0]=2; p3[0]=3; p4[0]=4; p5[0]=5; p6[0]=6;
+  Point1D p7, p8, p9, p10, p11, p12; p7[0]=0; p8[0]=0; p9[0]=10; p10[0]=0; p11[0]=5; p12[0]=5;
+
+    nbok += (vectPt1D.at(0).size()==6 && vectPt1D.at(1).size()==6 && vectPt1D.at(0).at(0) == p1 &&
+          vectPt1D.at(0).at(1)==p2 && vectPt1D.at(0).at(2) == p3 &&  vectPt1D.at(0).at(3) == p4
+       && vectPt1D.at(0).at(4)==p5 && vectPt1D.at(0).at(5)==p6
+       && vectPt1D.at(1).at(0)==p7
+       && vectPt1D.at(1).at(1)==p8 && vectPt1D.at(1).at(2)==p9 &&  vectPt1D.at(1).at(3)==p10
+       && vectPt1D.at(1).at(4)==p11 && vectPt1D.at(1).at(5)==p12);
+
+
   nb++;
   trace.endBlock();
 

tests/samples/polygons.dat

@@ -1,3 +1,3 @@
 # two test polygons 
-1 2 3 4 5 6
+  1 2 3 4 5  6 
 0 0 10 0 5 5