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allow PropertyManagers to be used in smart ranges

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This commit is contained in:
Max Lyon
2019-09-27 14:45:20 +02:00
parent aa91a88f7b
commit f71696f294
3 changed files with 67 additions and 1 deletions
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23
src/OpenMesh/Core/Mesh/SmartRange.hh
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@@ -59,7 +59,7 @@ struct SmartRangeT
// TODO: Someone with better c++ knowledge may improve the code below.
template <typename Functor>
auto sum(Functor f) -> decltype (f(std::declval<HandleT>())+f(std::declval<HandleT>()))
auto sum(Functor&& f) -> decltype (f(std::declval<HandleT>())+f(std::declval<HandleT>()))
{
auto range = static_cast<const RangeT*>(this);
auto begin = range->begin();
@@ -73,6 +73,27 @@ struct SmartRangeT
return sum;
}
template <typename Functor>
auto avg(Functor&& f) -> decltype (1.0 * (f(std::declval<HandleT>())+f(std::declval<HandleT>())))
{
auto range = static_cast<const RangeT*>(this);
auto begin = range->begin();
auto end = range->end();
assert(begin != end);
decltype (f(*begin) + f(*begin)) sum = f(*begin);
auto it = begin;
++it;
int n_elements = 1;
for (; it != end; ++it)
{
sum += f(*it);
++n_elements;
}
return (1.0 / n_elements) * sum;
}
};