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take vectors out of the loop to have less reallocations

This commit is contained in:
Andreas Fabri 2017-06-01 10:49:05 +02:00
parent 2f4c1019a9
commit f8d33e1ceb
2 changed files with 5 additions and 3 deletions
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3
Classification/include/CGAL/Classification/Feature/Vertical_dispersion.h
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@ -99,12 +99,13 @@ public:
std::size_t square = (std::size_t)(0.5 * radius_neighbors / grid.resolution()) + 1; std::size_t square = (std::size_t)(0.5 * radius_neighbors / grid.resolution()) + 1;
typename GeomTraits::Vector_3 verti (0., 0., 1.); typename GeomTraits::Vector_3 verti (0., 0., 1.);
std::vector<float> hori;
for (std::size_t j = 0; j < grid.height(); j++){ for (std::size_t j = 0; j < grid.height(); j++){
for (std::size_t i = 0; i < grid.width(); i++){ for (std::size_t i = 0; i < grid.width(); i++){
if(!(grid.has_points(i,j))) if(!(grid.has_points(i,j)))
continue; continue;
std::vector<float> hori; hori.clear();
std::size_t squareXmin = (i < square ? 0 : i - square); std::size_t squareXmin = (i < square ? 0 : i - square);
std::size_t squareXmax = (std::min) (grid.width()-1, i + square); std::size_t squareXmax = (std::min) (grid.width()-1, i + square);

3
Classification/include/CGAL/Classification/Local_eigen_analysis.h
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@ -83,9 +83,10 @@ private:
void operator()(const tbb::blocked_range<std::size_t>& r) const void operator()(const tbb::blocked_range<std::size_t>& r) const
{ {
std::vector<std::size_t> neighbors;
for (std::size_t i = r.begin(); i != r.end(); ++ i) for (std::size_t i = r.begin(); i != r.end(); ++ i)
{ {
std::vector<std::size_t> neighbors; neighbors.clear();
m_neighbor_query (get(m_point_map, *(m_input.begin()+i)), std::back_inserter (neighbors)); m_neighbor_query (get(m_point_map, *(m_input.begin()+i)), std::back_inserter (neighbors));
std::vector<typename PointMap::value_type> neighbor_points; std::vector<typename PointMap::value_type> neighbor_points;