Fix for #14
- always pad sentinels
diff --git a/Source/sweep.c b/Source/sweep.c
index 4f3c53e..32a56bf 100755
--- a/Source/sweep.c
+++ b/Source/sweep.c
@@ -1118,15 +1118,14 @@
tess->dict = dictNewDict( &tess->alloc, tess, (int (*)(void *, DictKey, DictKey)) EdgeLeq );
if (tess->dict == NULL) longjmp(tess->env,1);
- w = (tess->bmax[0] - tess->bmin[0]);
- h = (tess->bmax[1] - tess->bmin[1]);
+ /* If the bbox is empty, ensure that sentinels are not coincident by slightly enlarging it. */
+ w = (tess->bmax[0] - tess->bmin[0]) + (TESSreal)0.01;
+ h = (tess->bmax[1] - tess->bmin[1]) + (TESSreal)0.01;
- /* If the bbox is empty, ensure that sentinels are not coincident by
- slightly enlarging it. */
- smin = tess->bmin[0] - (w > 0 ? w : 0.01);
- smax = tess->bmax[0] + (w > 0 ? w : 0.01);
- tmin = tess->bmin[1] - (h > 0 ? h : 0.01);
- tmax = tess->bmax[1] + (h > 0 ? h : 0.01);
+ smin = tess->bmin[0] - w;
+ smax = tess->bmax[0] + w;
+ tmin = tess->bmin[1] - h;
+ tmax = tess->bmax[1] + h;
AddSentinel( tess, smin, smax, tmin );
AddSentinel( tess, smin, smax, tmax );
