organicmaps/libtess2
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Fix for #14

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- always pad sentinels
This commit is contained in:
Mikko Mononen 2018-04-16 11:52:47 +03:00
parent 1952b91b46
commit b256f4940b
1 changed files with 7 additions and 8 deletions
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15
Source/sweep.c
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@ -1118,15 +1118,14 @@ static void InitEdgeDict( TESStesselator *tess )
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 );