[GRASS-SVN] r55645 - grass/trunk/lib/vector/Vlib

[svn_grass at osgeo.org]

Author: mmetz
Date: 2013-04-06 06:38:18 -0700 (Sat, 06 Apr 2013)
New Revision: 55645

Modified:
   grass/trunk/lib/vector/Vlib/copy.c
Log:
Vlib: add comments for topology conversion

Modified: grass/trunk/lib/vector/Vlib/copy.c
===================================================================
--- grass/trunk/lib/vector/Vlib/copy.c	2013-04-06 13:14:00 UTC (rev 55644)
+++ grass/trunk/lib/vector/Vlib/copy.c	2013-04-06 13:38:18 UTC (rev 55645)
@@ -329,7 +329,7 @@
 }
 
 /*!
-  \brief Check if area forms an isle
+  \brief Check if area is part of an isle
 
   Check for areas that are part of isles which in turn are inside
   another area.
@@ -405,6 +405,10 @@
         cat = Vect_get_area_cat(In, area, field);
         if (cat < 0) {
             /* no category - check if area forms an isle */
+	    /* this check does not make sense because the area
+	     * is also not exported if it is part of an isle
+	     * inside another area: the isle gets exported
+	     * as an inner ring */
             if (!is_isle(In, area))
                 G_warning(_("No category defined for area %d. "
                             "Area not exported."),