Doygen file is outdated

[SunBlack]

The doxyfile.inis outdated. E.g. most entries in EXCLUDE are not correct or needed anymore. So maybe someone, who is using the documentation, should update this script.

[kunaltyagi]

@aPonza you've updated the docs recently. Can you weigh on this please?

[aPonza]

The doxyfile was updated (template-wise) as part of #3701, and needs (nice-to-have) a further update since the bump to 20.04 -> Doxygen 1.8.17. Code-wise, the exclude bit is: https://github.com/PointCloudLibrary/pcl/blob/14de3bea4869ac66f48e6815de9ae0402552a59d/doc/doxygen/doxyfile.in#L123-L135

So, easily, we can remove android and test/gtest-1.6.0, whereas I think what was 3rdparty has been moved inside surface completely, right? If that's the case that can be updated as well. @SunBlack was there any other bit you remember being completely bonkers? From a quick scan that seems to be the only real problem apart from the old template you might have seen and which can be updated as well now.

BTW I was noticing while trying to get the dot graph to appear that the doxygen_layout.xml is almost the default except for ordering (do we care?) and, after updating the layout template and factoring out the ordering, this diff:

--- ./test/doxygen_layout.xml
+++ ./test/default_layout.xml
@@ -29,11 +29,11 @@
       <tab type="exceptionindex" visible="$ALPHABETICAL_INDEX" title=""/> 
       <tab type="exceptionhierarchy" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="files" visible="no" title="">
+    <tab type="files" visible="yes" title="">
       <tab type="filelist" visible="yes" title="" intro=""/>
       <tab type="globals" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="examples" visible="no" title="" intro=""/>
+    <tab type="examples" visible="yes" title="" intro=""/>  
   </navindex>

   <!-- Layout definition for a class page -->
@@ -128,7 +128,7 @@

   <!-- Layout definition for a file page -->
   <file>
-    <briefdescription visible="no"/>
+    <briefdescription visible="yes"/>
     <includes visible="$SHOW_INCLUDE_FILES"/>
     <includegraph visible="$INCLUDE_GRAPH"/>
     <includedbygraph visible="$INCLUDED_BY_GRAPH"/>
@@ -215,11 +215,11 @@

   <!-- Layout definition for a directory page -->
   <directory>
-    <briefdescription visible="no"/>
-    <directorygraph visible="no"/>
-    <memberdecl>
-      <dirs visible="no"/>
-      <files visible="no"/>
+    <briefdescription visible="yes"/>
+    <directorygraph visible="yes"/>
+    <memberdecl>
+      <dirs visible="yes"/>
+      <files visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
   </directory>

and again the question is: do we care?