organicmaps/libtess2
13
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity Actions

Clarify the sentinel workaround

Browse source
This commit is contained in:
Marius Kintel 2015-01-13 18:03:58 -05:00
parent 7e004ebded
commit d7c34ac3ff
1 changed files with 6 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
Source/sweep.c
View file

@ -1121,10 +1121,12 @@ static void InitEdgeDict( TESStesselator *tess )
w = (tess->bmax[0] - tess->bmin[0]);
h = (tess->bmax[1] - tess->bmin[1]);
smin = tess->bmin[0] - w - 0.01;
smax = tess->bmax[0] + w + 0.01;
tmin = tess->bmin[1] - h - 0.01;
tmax = tess->bmax[1] + h + 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);
AddSentinel( tess, smin, smax, tmin );
AddSentinel( tess, smin, smax, tmax );