mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
#ifndef SPROUT_COMPOST_EFFECTS_CLIP_HPP
|
|
#define SPROUT_COMPOST_EFFECTS_CLIP_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/forward.hpp>
|
|
#include <sprout/range/adaptor/clamped.hpp>
|
|
|
|
namespace sprout {
|
|
namespace compost {
|
|
namespace effects {
|
|
//
|
|
// clip_holder
|
|
//
|
|
template<typename T>
|
|
class clip_holder {
|
|
public:
|
|
typedef T value_type;
|
|
private:
|
|
value_type low_;
|
|
value_type up_;
|
|
public:
|
|
clip_holder() = default;
|
|
clip_holder(clip_holder const&) = default;
|
|
explicit SPROUT_CONSTEXPR clip_holder(value_type const& low = -1, value_type const& up = 1)
|
|
: low_(low), up_(up)
|
|
{}
|
|
SPROUT_CONSTEXPR value_type const& lower() const {
|
|
return low_;
|
|
}
|
|
SPROUT_CONSTEXPR value_type const& upper() const {
|
|
return up_;
|
|
}
|
|
};
|
|
|
|
//
|
|
// clipped_forwarder
|
|
//
|
|
class clipped_forwarder {
|
|
public:
|
|
template<typename T = double>
|
|
SPROUT_CONSTEXPR sprout::compost::effects::clip_holder<T>
|
|
operator()(T const& low = -1, T const& up = 1) {
|
|
return sprout::compost::effects::clip_holder<T>(low, up);
|
|
}
|
|
};
|
|
|
|
//
|
|
// clipped
|
|
//
|
|
namespace {
|
|
SPROUT_STATIC_CONSTEXPR sprout::compost::effects::clipped_forwarder clipped{};
|
|
} // anonymous-namespace
|
|
|
|
//
|
|
// operator|
|
|
//
|
|
template<typename Range, typename T>
|
|
inline SPROUT_CONSTEXPR auto
|
|
operator|(Range&& lhs, sprout::compost::effects::clip_holder<T> const& rhs)
|
|
-> decltype(
|
|
sprout::forward<Range>(lhs)
|
|
| sprout::adaptors::clamped(rhs.lower(), rhs.upper())
|
|
)
|
|
{
|
|
return sprout::forward<Range>(lhs)
|
|
| sprout::adaptors::clamped(rhs.lower(), rhs.upper())
|
|
;
|
|
}
|
|
template<typename Range>
|
|
inline SPROUT_CONSTEXPR auto
|
|
operator|(Range&& lhs, sprout::compost::effects::clipped_forwarder const& rhs)
|
|
-> decltype(
|
|
sprout::forward<Range>(lhs)
|
|
| sprout::adaptors::clamped(-1., 1.)
|
|
)
|
|
{
|
|
return sprout::forward<Range>(lhs)
|
|
| sprout::adaptors::clamped(-1., 1.)
|
|
;
|
|
}
|
|
} // namespace effects
|
|
} // namespace compost
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_COMPOST_EFFECTS_CLIP_HPP
|