diff options
Diffstat (limited to 'src/mbgl/util/geometry_within.cpp')
| -rw-r--r-- | src/mbgl/util/geometry_within.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mbgl/util/geometry_within.cpp b/src/mbgl/util/geometry_within.cpp index 28a53c8ebc..89e3d84fc6 100644 --- a/src/mbgl/util/geometry_within.cpp +++ b/src/mbgl/util/geometry_within.cpp @@ -47,7 +47,11 @@ bool lineIntersectLine(const Point<int64_t>& a, y2 = p2.y - q1.y; x3 = q2.x - q1.x; y3 = q2.y - q1.y; - if ((x1 * y3 - x3 * y1) * (x2 * y3 - x3 * y2) < 0) return true; + auto ret1 = (x1 * y3 - x3 * y1); + auto ret2 = (x2 * y3 - x3 * y2); + if ((ret1 > 0 && ret2 < 0) || (ret1 < 0 && ret2 > 0)) { + return true; + } return false; }; |