Vector3.operator -

# [Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html).operator -

public static [Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html) **operator -** ([Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html) **a**, [Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html) **b**);

## 描述

将一个向量减去另一个向量。

将 `a` 的每个分量减去 `b` 的相应分量。

```
// prints (-5.0,-3.0,-1.0)

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void Example()
    {
        print(new Vector3(1, 2, 3) - new Vector3(6, 5, 4));
    }
}
```

---

public static [Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html) **operator -** ([Vector3](https://docs.unity3d.com/cn/2019.4/ScriptReference/Vector3.html) **a**);

## 描述

对向量求反。

结果中的每个分量都已求反。

```
// prints (-1.0f, -2.0f, -3.0f)

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void Example()
    {
        print(-new Vector3(1.0f, 2.0f, 3.0f));
    }
}
```