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XCEngine/docs/api/math/matrix4/get-rotation.md
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2026-03-26 02:41:00 +08:00

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Matrix4x4::GetRotation

Quaternion GetRotation() const

从变换矩阵中提取旋转分量。将矩阵转换为对应的四元数表示。

参数: (无)

返回: 旋转四元数

线程安全:

复杂度: O(1)

示例:

#include "XCEngine/Core/Math/Matrix4.h"
#include "XCEngine/Core/Math/Quaternion.h"

using namespace XCEngine::Math;

Quaternion expected = Quaternion::FromEuler(0.0f, 90.0f, 0.0f);
Matrix4 transform = Matrix4::TRS(
    Vector3(0.0f, 0.0f, 0.0f),
    expected,
    Vector3(1.0f, 1.0f, 1.0f)
);

Quaternion rotation = transform.GetRotation();
// rotation 表示相同的旋转

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