43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
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# Transform::InverseTransformDirection
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```cpp
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Vector3 InverseTransformDirection(const Vector3& direction) const;
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```
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将一个方向向量从世界空间逆变换到本地空间。计算结果为 `rotation.Inverse() * direction / scale`。
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此方法是 `TransformDirection` 的逆操作。
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**参数：**
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- `direction` - 世界空间中的方向向量
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**返回：** `Vector3` - 本地空间中的逆变换后方向
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**线程安全：** ❌（无锁，非线程安全）
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**复杂度：** O(1)
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**示例：**
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```cpp
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#include "XCEngine/Math/Transform.h"
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#include "XCEngine/Math/Vector3.h"
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using namespace XCEngine::Math;
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void InverseTransformDirectionExample() {
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Transform transform;
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transform.position = Vector3(10.0f, 0.0f, 0.0f);
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transform.rotation = Quaternion::Identity();
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transform.scale = Vector3(2.0f, 2.0f, 2.0f);
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Vector3 worldDir(0.0f, 2.0f, 0.0f);
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Vector3 localDir = transform.InverseTransformDirection(worldDir);
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}
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```
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## 相关文档
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- [Transform](transform.md) - 返回类总览
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- [TransformDirection](transform-direction.md) - 正向变换方向
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