Fix build errors

modules/contrib/src/spinimages.cpp

@@ -85,10 +85,10 @@ namespace
     };
     size_t colors_mum = sizeof(colors)/sizeof(colors[0]);
 
-#if (defined __cplusplus  && __cplusplus > 199711L) || defined _STLPORT_MAJOR
+template<class FwIt, class T> inline void _iota(FwIt first, FwIt last, T value)
-#else
+{
-template<class FwIt, class T> void iota(FwIt first, FwIt last, T value) { while(first != last) *first++ = value++; }
+    while(first != last) *first++ = value++;
-#endif
+}
 
 void computeNormals( const Octree& Octree, const vector<Point3f>& centers, vector<Point3f>& normals,
                     vector<uchar>& mask, float normalRadius, int minNeighbors = 20)
@@ -799,14 +799,14 @@ void cv::SpinImageModel::selectRandomSubset(float ratio)
     else if (setSize == vtxSize)
     {
         subset.resize(vtxSize);
-        iota(subset.begin(), subset.end(), 0);
+        _iota(subset.begin(), subset.end(), 0);
     }
     else
     {
         RNG& rnd = theRNG();
 
         vector<size_t> left(vtxSize);
-        iota(left.begin(), left.end(), (size_t)0);
+        _iota(left.begin(), left.end(), (size_t)0);
 
         subset.resize(setSize);
         for(size_t i = 0; i < setSize; ++i)
@@ -879,7 +879,7 @@ void cv::SpinImageModel::compute()
     {
         mesh.computeNormals(normalRadius, minNeighbors);
         subset.resize(mesh.vtx.size());
-        iota(subset.begin(), subset.end(), 0);
+        _iota(subset.begin(), subset.end(), 0);
     }
     else
         mesh.computeNormals(subset, normalRadius, minNeighbors);