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Deal with empty curves

This commit is contained in:
Andreas Fabri 2025-01-02 07:18:20 +00:00
parent 1b0c19dec6
commit b5f983695e
2 changed files with 8 additions and 1 deletions
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1
Frechet_distance/examples/Frechet_distance/Frechet_DS_3.cpp
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@ -25,7 +25,6 @@ int main()
CGAL::IO::read_linestring_WKT(in, curves.back()); CGAL::IO::read_linestring_WKT(in, curves.back());
} }
int N = curves.size();
Curve query = curves.back(); Curve query = curves.back();
curves.pop_back(); curves.pop_back();

8
Frechet_distance/include/CGAL/Frechet_distance.h
View File

@ -128,6 +128,9 @@ bool is_Frechet_distance_larger(const PointRange& polyline1,
Interval_nt<false>>; Interval_nt<false>>;
Protect_FPU_rounding<filtered> p; Protect_FPU_rounding<filtered> p;
if(polyline1.empty() || polyline2.empty()){
return false;
}
auto icurve1 = Frechet_distance::internal::toCurve<force_filtering>(polyline1, traits); auto icurve1 = Frechet_distance::internal::toCurve<force_filtering>(polyline1, traits);
auto icurve2 = Frechet_distance::internal::toCurve<force_filtering>(polyline2, traits); auto icurve2 = Frechet_distance::internal::toCurve<force_filtering>(polyline2, traits);
@ -186,6 +189,11 @@ std::pair<double,double> bounded_error_Frechet_distance(const PointRange& polyli
Interval_nt<false>>; Interval_nt<false>>;
Protect_FPU_rounding<filtered> p; Protect_FPU_rounding<filtered> p;
if(polyline1.empty() || polyline2.empty()){
return std::make_pair<double>(0,0);
}
auto icurve1 = Frechet_distance::internal::toCurve<force_filtering>(polyline1, traits); auto icurve1 = Frechet_distance::internal::toCurve<force_filtering>(polyline1, traits);
auto icurve2 = Frechet_distance::internal::toCurve<force_filtering>(polyline2, traits); auto icurve2 = Frechet_distance::internal::toCurve<force_filtering>(polyline2, traits);