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Implementation of vector_cast that works with vwr::Vec.

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This commit is contained in:
King_DuckZ 2016-10-28 22:20:23 +02:00
parent 629a3d9e08
commit c8920ea997
1 changed files with 22 additions and 0 deletions
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22
src/vector.hpp
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@ -6,6 +6,7 @@
#if !defined(NDEBUG) #if !defined(NDEBUG)
# include <iostream> # include <iostream>
#endif #endif
#include <utility>
#define SPECIALIZE_ARRAY_VECTOR(TYPE, DIM) \ #define SPECIALIZE_ARRAY_VECTOR(TYPE, DIM) \
template <> \ template <> \
@ -34,12 +35,33 @@ namespace vwr {
return parStream; return parStream;
} }
#endif #endif
namespace implem {
template <typename TO, typename FROM, std::size_t... I>
Vec<TO> vector_cast (const Vec<FROM>& parVec, Vec<TO>*, std::index_sequence<I...>) {
static_assert(
static_cast<int>(Vec<TO>::dimensions) == static_cast<int>(Vec<FROM>::dimensions),
"Mismatching dimensions"
);
static_assert(sizeof...(I) == Vec<TO>::dimensions, "Mismatching index count");
typedef typename Vec<TO>::scalar_type CastType;
return Vec<TO>(static_cast<CastType>(parVec[I])...);
}
} //namespace implem
template <typename TOVec, typename FROM>
TOVec vector_cast (const Vec<FROM>& parVec) {
TOVec* const to = nullptr;
return implem::vector_cast(parVec, to, std::make_index_sequence<Vec<FROM>::dimensions>());
}
} //namespace vwr } //namespace vwr
namespace curry { namespace curry {
using vec2f = vwr::Vec<std::array<float, 2>>; using vec2f = vwr::Vec<std::array<float, 2>>;
using vec2us = vwr::Vec<std::array<uint16_t, 2>>; using vec2us = vwr::Vec<std::array<uint16_t, 2>>;
using vec2i = vwr::Vec<std::array<int32_t, 2>>; using vec2i = vwr::Vec<std::array<int32_t, 2>>;
using vwr::vector_cast;
} //namespace curry } //namespace curry
//make stuff from CloonelJump compile happily //make stuff from CloonelJump compile happily