diff options
Diffstat (limited to 'boost/geometry/algorithms/centroid.hpp')
| -rw-r--r-- | boost/geometry/algorithms/centroid.hpp | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/boost/geometry/algorithms/centroid.hpp b/boost/geometry/algorithms/centroid.hpp index 1b99ab2ef3..8ef017a3f1 100644 --- a/boost/geometry/algorithms/centroid.hpp +++ b/boost/geometry/algorithms/centroid.hpp @@ -220,19 +220,22 @@ struct centroid_range_state iterator_type it = boost::begin(view); iterator_type end = boost::end(view); - typename PointTransformer::result_type - previous_pt = transformer.apply(*it); - - for ( ++it ; it != end ; ++it) + if (it != end) { typename PointTransformer::result_type - pt = transformer.apply(*it); + previous_pt = transformer.apply(*it); - strategy.apply(static_cast<point_type const&>(previous_pt), - static_cast<point_type const&>(pt), - state); - - previous_pt = pt; + for ( ++it ; it != end ; ++it) + { + typename PointTransformer::result_type + pt = transformer.apply(*it); + + strategy.apply(static_cast<point_type const&>(previous_pt), + static_cast<point_type const&>(pt), + state); + + previous_pt = pt; + } } } }; |