33 lines
630 B
Markdown
33 lines
630 B
Markdown
# Ray::GetPoint
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```cpp
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Vector3 GetPoint(float t) const
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```
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获取射线上指定参数距离处的点。计算公式：`origin + direction * t`
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**参数：**
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- `t` - 沿射线方向的参数距离
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**返回：** `Vector3` - 射线上的点 `origin + direction * t`
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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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#include <XCEngine/Math/Ray.h>
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#include <XCEngine/Math/Vector3.h>
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using namespace XCEngine::Math;
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Ray ray(Vector3(0.0f, 0.0f, 0.0f), Vector3(1.0f, 0.0f, 0.0f));
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Vector3 point = ray.GetPoint(100.0f); // point = (100, 0, 0)
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```
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## 相关文档
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- [Ray 类总览](ray.md) - 返回类总览
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