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Refactored math functions in UCloud9ToolsLibrary (#269)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,56 +1,54 @@ | ||
| // Copyright (c) 2023 Alexei Gladkikh | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person | ||
| // obtaining a copy of this software and associated documentation | ||
| // files (the "Software"), to deal in the Software without | ||
| // restriction, including without limitation the rights to use, | ||
| // copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the | ||
| // Software is furnished to do so, subject to the following | ||
| // conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be | ||
| // included in all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES | ||
| // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | ||
| // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | ||
| // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
| // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| // OTHER DEALINGS IN THE SOFTWARE. | ||
| // Copyright (c) 2024 Alexei Gladkikh | ||
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| #pragma once | ||
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| /** | ||
| * std abstraction because UE4 has self APIs to avoid mixin std and UE4 APIs | ||
| */ | ||
| namespace Concepts | ||
| namespace Math | ||
| { | ||
| template <typename SelfType> | ||
| concept incrementable = requires(SelfType Self) | ||
| template <class T, class U> | ||
| T InverseLerp(const T& A, const T& B, const U& X) { return static_cast<T>((X - A) / (B - A)); } | ||
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| // see mathlib.h from cstrike15_src | ||
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| template <typename InputType, typename OutputType> | ||
| constexpr InputType Select(InputType Value, OutputType A, OutputType B) | ||
| { | ||
| ++Self; | ||
| }; | ||
| return Value < 0 ? A : B; | ||
| } | ||
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| template <typename SelfType, typename OtherType> | ||
| concept plusassingable = | ||
| incrementable<SelfType> | ||
| && requires(SelfType Self, OtherType Other) | ||
| template <typename ValueType, typename InRangeType, typename OutRangeType> | ||
| constexpr OutRangeType RemapValue( | ||
| ValueType Value, | ||
| InRangeType InRangeMin, | ||
| InRangeType InRangeMax, | ||
| OutRangeType OutRangeMin, | ||
| OutRangeType OutRangeMax) | ||
| { | ||
| if (InRangeMin == InRangeMax) | ||
| { | ||
| Self += Other; | ||
| }; | ||
| return Select(Value - InRangeMax, OutRangeMax, OutRangeMin); | ||
| } | ||
|
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| template <typename SelfType, typename BoundType> | ||
| concept dereferencable = requires(SelfType Self) | ||
| { | ||
| { *Self } -> std::convertible_to<BoundType>; | ||
| }; | ||
| let InRange = static_cast<OutRangeType>(InRangeMax - InRangeMin); | ||
| let OutRange = OutRangeMax - OutRangeMin; | ||
| return OutRangeMin + OutRange * static_cast<OutRangeType>(Value - InRangeMin) / InRange; | ||
| } | ||
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| template <typename SelfType, typename BoundType> | ||
| concept convertiable = requires(SelfType Self) | ||
| template <typename ValueType, typename InRangeType, typename OutRangeType> | ||
| constexpr OutRangeType RemapValueClamped( | ||
| ValueType Value, | ||
| InRangeType InRangeMin, | ||
| InRangeType InRangeMax, | ||
| OutRangeType OutRangeMin, | ||
| OutRangeType OutRangeMax) | ||
| { | ||
| { Self } -> std::convertible_to<BoundType>; | ||
| }; | ||
| if (InRangeMin == InRangeMax) | ||
| { | ||
| return Select(Value - InRangeMax, OutRangeMax, OutRangeMin); | ||
| } | ||
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| let InRange = static_cast<OutRangeType>(InRangeMax - InRangeMin); | ||
| let Temp = FMath::Clamp(static_cast<OutRangeType>(Value - InRangeMin) / InRange, 0.0f, 1.0f); | ||
| let OutRange = OutRangeMax - OutRangeMin; | ||
| return OutRangeMin + OutRange * Temp; | ||
| } | ||
| } |
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