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update min and max functions on ranges and add minmax function

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This commit is contained in:
Max Lyon
2019-10-07 13:06:15 +02:00
parent 592c13ab5c
commit 1948883fd1
2 changed files with 37 additions and 29 deletions
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40
src/OpenMesh/Core/Mesh/SmartRange.hh
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@@ -71,7 +71,6 @@ 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>()))
{
@@ -130,46 +129,49 @@ struct SmartRangeT
}
template <int n, typename Functor>
auto elem_wise_min(Functor&& f) -> typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type
template <typename Functor>
auto min(Functor&& f) -> typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type
{
using std::min;
auto range = static_cast<const RangeT*>(this);
auto it = range->begin();
auto end = range->end();
assert(it != end);
typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type min = f(*it);
typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type res = f(*it);
++it;
for (; it != end; ++it)
{
const auto& tmp = f(*it);
for (int i = 0; i < n; ++i)
min[i] = std::min(min[i], tmp[i]);
}
res = min(res, f(*it));
return min;
return res;
}
template <int n, typename Functor>
auto elem_wise_max(Functor&& f) -> typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type
template <typename Functor>
auto max(Functor&& f) -> typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type
{
using std::max;
auto range = static_cast<const RangeT*>(this);
auto it = range->begin();
auto end = range->end();
assert(it != end);
typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type max = f(*it);
typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type res = f(*it);
++it;
for (; it != end; ++it)
{
const auto& tmp = f(*it);
for (int i = 0; i < n; ++i)
max[i] = std::max(max[i], tmp[i]);
}
res = max(res, f(*it));
return max;
return res;
}
template <typename Functor>
auto minmax(Functor&& f) -> std::pair<typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type,
typename std::remove_reference<decltype (f(std::declval<HandleT>()))>::type>
{
return std::make_pair(this->min(f), this->max(f));
}