# Viewport::GetAspectRatio

```cpp
float GetAspectRatio() const;
```

获取视口宽高比。

**返回：** 宽高比 (width / height)，如果 height 为 0 则返回 0.0f

**线程安全：** ✅

**复杂度：** O(1)

**示例：**

```cpp
#include "XCEngine/Math/Rect.h"
#include <iostream>

using namespace XCEngine::Math;

int main() {
    Viewport viewport(0.0f, 0.0f, 1920.0f, 1080.0f);
    float aspect = viewport.GetAspectRatio();
    std::cout << "Aspect Ratio: " << aspect << "\n";
    return 0;
}
```

## 相关文档

- [`Viewport::GetRect`](getrect.md) - 转换为 Rect
- [Viewport 总览](viewport.md)