[Viking-devel] SF.net SVN: viking: [532] trunk/src/viktrack.c

[<qto...@us...>]

Revision: 532
          http://viking.svn.sourceforge.net/viking/?rev=532&view=rev
Author:   qtonthat
Date:     2007-10-24 00:46:50 -0700 (Wed, 24 Oct 2007)

Log Message:
-----------
Fix a bug that caused crashes when displaying elev graph for some track.

Crashes on tracks which have total length of 0. For examples, tracks which
consist only 2 trackpoints of the same location. The problem is now fixed.

Signed-off-by: Quy Tonthat <qto...@gm...>

Modified Paths:
--------------
    trunk/src/viktrack.c

Modified: trunk/src/viktrack.c
===================================================================
--- trunk/src/viktrack.c	2007-10-22 23:09:50 UTC (rev 531)
+++ trunk/src/viktrack.c	2007-10-24 07:46:50 UTC (rev 532)
@@ -368,6 +368,10 @@
   total_length = vik_track_get_length_including_gaps ( tr );
   chunk_length = total_length / num_chunks;
 
+  /* Zero chunk_length (eg, track of 2 tp with the same loc) will cause crash */
+  if (chunk_length <= 0)
+    return NULL;
+
   current_dist = 0.0;
   current_area_under_curve = 0;
   current_chunk = 0;


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