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XCSDD/docs/api/math/rect/rectint-contains.md
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# RectInt::Contains
```cpp
bool Contains(int32_t px, int32_t py) const
```
检测整数坐标点是否在矩形内。
**参数:**
- `px` - 点的 x 坐标
- `py` - 点的 y 坐标
**返回:** `bool` - 点在矩形内(包含边界)返回 true
**复杂度:** O(1)
**示例:**
```cpp
RectInt rect(0, 0, 1920, 1080);
if (rect.Contains(pixelX, pixelY)) {
// 像素在矩形内
}
```