diff options
Diffstat (limited to 'src/polygon.cpp')
| -rw-r--r-- | src/polygon.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/polygon.cpp b/src/polygon.cpp index 63628c5..17b4cff 100644 --- a/src/polygon.cpp +++ b/src/polygon.cpp @@ -94,7 +94,7 @@ void Polygon::move (double x, double y) namespace { // start of anonymous namespace struct SweepEvent; struct SegmentComp : public binary_function<SweepEvent*, SweepEvent*, bool> { - bool operator() (SweepEvent* e1, SweepEvent* e2); + bool operator() (SweepEvent* e1, SweepEvent* e2) const; }; struct SweepEvent { @@ -117,7 +117,7 @@ namespace { // start of anonymous namespace }; struct SweepEventComp : public binary_function<SweepEvent*, SweepEvent*, bool> { - bool operator() (SweepEvent* e1, SweepEvent* e2) { + bool operator() (SweepEvent* e1, SweepEvent* e2) const { if (e1->p.x < e2->p.x) // Different x coordinate return true; if (e2->p.x < e1->p.x) // Different x coordinate @@ -133,7 +133,7 @@ namespace { // start of anonymous namespace } // end of anonymous namespace -bool SegmentComp::operator() (SweepEvent* e1, SweepEvent* e2) { +bool SegmentComp::operator() (SweepEvent* e1, SweepEvent* e2) const { if (e1 == e2) return false; if (signedArea (e1->p, e1->other->p, e2->p) != 0 || signedArea (e1->p, e1->other->p, e2->other->p) != 0) { |