22 lines
383 B
Markdown
22 lines
383 B
Markdown
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# Matrix4::MultiplyVector
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```cpp
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Vector3 MultiplyVector(const Vector3& v) const
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```
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使用矩阵变换方向向量（不包含平移）。
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**参数：**
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- `v` - 要变换的方向向量
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**返回：** `Vector3` - 变换后的方向
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**复杂度：** O(1)
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**示例：**
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```cpp
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Matrix4 model = Matrix4::TRS(pos, rot, scale);
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Vector3 worldDir = model.MultiplyVector(localDir);
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```
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