Add more printouts to sample drawing

Shape_detection/include/CGAL/Shape_detection/Efficient_RANSAC/Efficient_RANSAC.h

@@ -1131,11 +1131,12 @@ class Efficient_RANSAC {
 
     std::cerr << (cur ? "  node found" : "  node not found") << std::endl;
 
-//    std::cerr << "  relevant node: " << cur << std::endl;
-
     if (!cur)
       return false;
 
+    std::cerr << "  node contains " << cur->size() << " points" << std::endl;
+
+    // Count point indices that map to -1 in the shape index
     std::size_t enough = 0;
     for (auto j : cur->points()) {
       if (shapeIndex[j] == -1) {
@@ -1145,12 +1146,17 @@ class Efficient_RANSAC {
       }
     }
 
+    std::cerr << "  enough: " << enough << std::endl;
+
     if (enough >= requiredSamples) {
       do {
         std::size_t p = CGAL::get_default_random().
                 uniform_int<std::size_t>(0, cur->size() - 1);
         // TODO: I'm not sure if dereferencing this is working correctly
         std::size_t j = *(cur->points().begin() + p);
+
+        std::cerr << "  j: " << j << std::endl;
+
         if (shapeIndex[j] == -1)
           indices.insert(j);
       } while (indices.size() < requiredSamples);