Revision: 64309
http://sourceforge.net/p/brlcad/code/64309
Author: starseeker
Date: 2015-02-27 00:45:32 +0000 (Fri, 27 Feb 2015)
Log Message:
-----------
If we have points but no convex points, we've probably got a non CCW polygon.
This test won't help for a non-convex polygon, but it may be a helpful clue in
some situations.
Modified Paths:
--------------
brlcad/trunk/src/libbn/polygon.c
Modified: brlcad/trunk/src/libbn/polygon.c
===================================================================
--- brlcad/trunk/src/libbn/polygon.c 2015-02-27 00:24:34 UTC (rev 64308)
+++ brlcad/trunk/src/libbn/polygon.c 2015-02-27 00:45:32 UTC (rev 64309)
@@ -544,6 +544,9 @@
/* If we didn't find any ears, something is wrong - possibly non CCW
inputs */
if (BU_LIST_IS_EMPTY(&(lists->ear_list->l))) {
ret = 1;
+ if (BU_LIST_IS_EMPTY(&(lists->convex_list->l)) &&
!BU_LIST_IS_EMPTY(&(lists->vertex_list->l))) {
+ bu_log("No convex points were found - this probably indicates the
points are not in CCW order\n");
+ }
goto cleanup;
}
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