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LibGfx: Add Vector::to_rounded<T>()

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Jelle Raaijmakers 2022-04-29 15:09:16 +02:00 committed by Andreas Kling
parent 54108263d6
commit 7db68e118c
Notes: sideshowbarker 2024-07-17 11:17:56 +09:00 
Author: https://github.com/gmta
Commit: https://github.com/SerenityOS/serenity/commit/7db68e118c
Pull-request: https://github.com/SerenityOS/serenity/pull/13835
Reviewed-by: https://github.com/sunverwerth ✅
1 changed files with 20 additions and 0 deletions
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20
Userland/Libraries/LibGfx/VectorN.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2020, Stephan Unverwerth <s.unverwerth@serenityos.org>
* Copyright (c) 2022, Jelle Raaijmakers <jelle@gmta.nl>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
@ -27,8 +28,12 @@
#endif
namespace Gfx {
template<size_t N, typename T>
requires(N >= 2 && N <= 4) class VectorN final {
template<size_t U, typename V>
friend class VectorN;
static_assert(LOOP_UNROLL_N >= N, "Unroll the entire loop for performance.");
public:
@ -226,7 +231,22 @@ public:
return String::formatted("[{},{},{},{}]", x(), y(), z(), w());
}
template<typename U>
[[nodiscard]] VectorN<N, U> to_rounded() const
{
VectorN<N, U> result;
UNROLL_LOOP
for (auto i = 0u; i < N; ++i) {
if constexpr (IsSame<T, float>)
result.m_data[i] = static_cast<U>(lrintf(m_data[i]));
else
result.m_data[i] = static_cast<U>(lrint(m_data[i]));
}
return result;
}
private:
AK::Array<T, N> m_data;
};
}