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18 lines
216 B
Markdown
18 lines
216 B
Markdown
# Matrix3::Identity
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```cpp
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static Matrix3 Identity()
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```
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返回 3x3 单位矩阵。
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**返回：** `Matrix3` - 单位矩阵
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**复杂度：** O(1)
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**示例：**
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```cpp
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Matrix3 identity = Matrix3::Identity();
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```
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