docs: update math API docs
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docs/api/math/vector3/operator_mul.md
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# Vector3::operator*
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```cpp
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Vector3 operator*(float scalar) const
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Vector3 operator*(const Vector3& other) const
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```
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向量乘法。支持向量与标量相乘,以及向量分量对应相乘。
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**参数:**
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- `scalar` - 标量值(用于第一个重载)
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- `other` - 向量(用于第二个重载,分量相乘)
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**返回:** `Vector3` - 乘法结果
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**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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Vector3 v(1.0f, 2.0f, 3.0f);
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// 标量乘法
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Vector3 scaled = v * 2.0f; // (2.0f, 4.0f, 6.0f)
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// 分量相乘
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Vector3 a(1.0f, 2.0f, 3.0f);
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Vector3 b(2.0f, 3.0f, 4.0f);
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Vector3 componentwise = a * b; // (2.0f, 6.0f, 12.0f)
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```
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## 相关文档
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- [Vector3 类总览](vector3.md) - 返回类总览
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- [`operator/`](operator_div.md) - 除法运算
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- [`operator*=`](operator_mul_assign.md) - 乘法赋值
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- [Quaternion * Vector3](quaternion-multiply.md) - 四元数旋转向量
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