Variable setLength

setLength: <T extends BaseArgType = number[]>(
    a: BaseArgType,
    len: number,
    dst?: T,
) => T

Type declaration

- <T extends BaseArgType = number[]>(a: BaseArgType, len: number, dst?: T): T
- Treat a 4D vector as a direction and set it's length
  Type Parameters
  - T extends BaseArgType = number[]
  Parameters
  - a: BaseArgType
    The vec4 to lengthen
  - len: number
    The length of the resulting vector
  - Optionaldst: T
  Returns T
  The lengthened vector