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Commit a3f0a591 authored by Ken Thomases's avatar Ken Thomases Committed by Alexandre Julliard
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gdiplus: Avoid infinite recursion in flatten_bezier().

If either of the recursive calls would have the same x2, y2, x3, and y3 arguments as the current call, the path is as flat as the precision of floats allows. Signed-off-by: 's avatarKen Thomases <ken@codeweavers.com> Signed-off-by: 's avatarVincent Povirk <vincent@codeweavers.com> Signed-off-by: 's avatarAlexandre Julliard <julliard@winehq.org>
parent 5ff2fdc4
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dlls/gdiplus/graphicspath.c
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...@@ -142,6 +142,10 @@ static BOOL flatten_bezier(path_list_node_t *start, REAL x2, REAL y2, REAL x3, R ...@@ -142,6 +142,10 @@ static BOOL flatten_bezier(path_list_node_t *start, REAL x2, REAL y2, REAL x3, R
mp[2].X = (mp[1].X + mp[3].X) / 2.0; mp[2].X = (mp[1].X + mp[3].X) / 2.0;
mp[2].Y = (mp[1].Y + mp[3].Y) / 2.0; mp[2].Y = (mp[1].Y + mp[3].Y) / 2.0;
if ((x2 == mp[0].X && y2 == mp[0].Y && x3 == mp[1].X && y3 == mp[1].Y) ||
(x2 == mp[3].X && y2 == mp[3].Y && x3 == mp[4].X && y3 == mp[4].Y))
return TRUE;
pt = end->pt; pt = end->pt;
pt_st = start->pt; pt_st = start->pt;
/* check flatness as a half of distance between middle point and a linearized path */ /* check flatness as a half of distance between middle point and a linearized path */
......
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