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20 lines
423 B
Markdown
20 lines
423 B
Markdown
# Math::HALF_PI
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```cpp
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constexpr float HALF_PI = 1.57079632679489661923f;
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```
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`HALF_PI` 是圆周率除以 2，即 90 度对应的弧度值，约为 1.57079632679489661923。该常量常用于角度与弧度的转换、四分之一圆周计算等场景。
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**示例：**
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```cpp
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#include <XCEngine/Math/Math.h>
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float ninetyDegreesRadians = Math::HALF_PI;
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```
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## 相关文档
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- [Math 总览](h.md) - 返回 Math 概览
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