[OCTREE] Save the point size setting between different depth.

tools/octree_viewer.cpp

@@ -68,7 +68,8 @@ class OctreeViewer
     wireframe (true),
     show_cubes_ (true),
     show_centroids_ (false),
-    show_original_points_ (false)
+    show_original_points_ (false),
+    point_size_ (1.0)
     {
 
     //try to load the cloud
@@ -130,6 +131,7 @@ class OctreeViewer
   //bool to decide what should be display
   bool wireframe;
   bool show_cubes_, show_centroids_, show_original_points_;
+  float point_size_;
   //========================================================
 
   /* \brief Callback to interact with the keyboard
@@ -173,6 +175,16 @@ class OctreeViewer
         wireframe = false;
       update ();
     }
+    else if ((event.getKeyCode () == '-') && event.keyDown ())
+    {
+      point_size_ = std::max(1.0f, point_size_ * (1 / 2.0f));
+      update ();
+    }
+    else if ((event.getKeyCode () == '+') && event.keyDown ())
+    {
+      point_size_ *= 2.0f;
+      update ();
+    }
   }
 
   /* \brief Graphic loop for the viewer
@@ -265,13 +277,15 @@ class OctreeViewer
       //show centroid points
       pcl::visualization::PointCloudColorHandlerGenericField<pcl::PointXYZ> color_handler (cloudVoxel, "x");
       viz.addPointCloud (cloudVoxel, color_handler, "cloud_centroid");
+      viz.setPointCloudRenderingProperties (pcl::visualization::PCL_VISUALIZER_POINT_SIZE, point_size_, "cloud_centroid");
     }
 
     if (show_original_points_)
     {
       //show origin point cloud
       pcl::visualization::PointCloudColorHandlerGenericField<pcl::PointXYZ> color_handler (cloud, "z");
       viz.addPointCloud (cloud, color_handler, "cloud");
+      viz.setPointCloudRenderingProperties (pcl::visualization::PCL_VISUALIZER_POINT_SIZE, point_size_, "cloud");
     }
   }