第一次提交

Plugins/GMS/Source/GenericMovementSystem/Private/Utility/GMS_Vector.cpp

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+
+#include "Utility/GMS_Vector.h"
+
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(GMS_Vector)
+
+FVector UGMS_Vector::SlerpSkipNormalization(const FVector& From, const FVector& To, const float Ratio)
+{
+	// http://number-none.com/product/Understanding%20Slerp,%20Then%20Not%20Using%20It/
+
+	auto Dot{From | To};
+
+	if (Dot > 0.9995f)
+	{
+		return FMath::Lerp(From, To, Ratio).GetSafeNormal();
+	}
+
+	Dot = FMath::Max(-1.0f, Dot);
+
+	const auto Theta{UE_REAL_TO_FLOAT(FMath::Acos(Dot)) * Ratio};
+
+	float Sin, Cos;
+	FMath::SinCos(&Sin, &Cos, Theta);
+
+	auto FromPerpendicular{To - From * Dot};
+	FromPerpendicular.Normalize();
+
+	return From * Cos + FromPerpendicular * Sin;
+}