24 lines
376 B
Markdown
24 lines
376 B
Markdown
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# Vector2::Dot
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```cpp
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static float Dot(const Vector2& a, const Vector2& b)
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```
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计算两个 2D 向量的点积。
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**参数：**
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- `a` - 第一个向量
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- `b` - 第二个向量
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**返回：** `float` - 点积结果 a.x * b.x + a.y * b.y
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**复杂度：** O(1)
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**示例：**
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```cpp
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Vector2 a(1.0f, 0.0f);
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Vector2 b(0.0f, 1.0f);
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float dot = Vector2::Dot(a, b); // 0.0f
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```
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