[Overview][Types][Classes][Procedures and functions][Index] | Reference for unit 'matrix' (#rtl)

# Tvector4_double.length

Calculates the length of the vector.

## Declaration

Source position: matrix.pp line 130

`function Tvector4_double.length: Double;`

## Description

Calculate the length of the vector: length=sqrt(data[0]**2+data[1]**2+data[2]**2+data[3]**2). Try to use squared_length if you are able to, as it is faster.

Documentation generated on: May 14 2021