@three3d/tools/doc/api/tools.computevectorscalar.md

@three3d/tools 提供了 ThreeJS 常用的工具库

<!-- Do not edit this file. It is automatically generated by API Documenter. -->

[Home](./index.md) &gt; [@three3d/tools](./tools.md) &gt; [computeVectorScalar](./tools.computevectorscalar.md)

## computeVectorScalar() function

计算从向量 from 到 向量 to 的 等比例缩放；

**Signature:**

```typescript
export declare function computeVectorScalar<Vec extends VectorInstance>(from: Vec, to: Vec): number;
```

## Parameters

|  Parameter | Type | Description |
|  --- | --- | --- |
|  from | Vec |  |
|  to | Vec |  |

**Returns:**

number


## Remarks

假设 from 和 to 共线