docs: update math API docs

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2026-03-20 02:35:15 +08:00
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# Vector3::operator+
```cpp
Vector3 operator+(const Vector3& other) const
```
向量加法,将两个向量的对应分量相加。
**参数:**
- `other` - 要加的向量
**返回:** `Vector3` - 相加结果
**线程安全:**
**复杂度:** O(1)
**示例:**
```cpp
Vector3 a(1.0f, 2.0f, 3.0f);
Vector3 b(4.0f, 5.0f, 6.0f);
Vector3 c = a + b; // (5.0f, 7.0f, 9.0f)
```
## 相关文档
- [Vector3 类总览](vector3.md) - 返回类总览
- [`operator-`](operator_sub.md) - 减法运算
- [`operator+=`](operator_add_assign.md) - 加法赋值