Function rect

rect(num: number, center?: number, width?: number, scl?: number): number
Evaluates the rect function at a number.
Parameters
- num: number
  the number
- center: number = 0
  The position of the function
- width: number = 2
  The width of the function
- scl: number = 1
  The scale of the function
Returns number
Example
```
const result = Chalkboard.real.rect(0, 0, 2); // Returns 1
```
- Defined in Chalkboard.real.ts:1548