@technobuddha > library > Math > Operations

Function: lerp()

function lerp(
   a: number, 
   b: number, 
   proportion: number): number;

Defined in: lerp.ts:21

Performs linear interpolation between values a and b. Returns the value between a and b proportional to x (when x is between 0 and 1. When x is outside this range, the return value is a linear extrapolation).

Parameters

Parameter	Type	Description
a	number	A number.
b	number	A number.
proportion	number	The proportion between a and b.

Returns

number

The interpolated value between a and b.

Example

lerp(0, 10, 0); // 0
lerp(0, 10, 0.5); // 5
lerp(0, 10, 1); // 10
lerp(10, 20, 0.25); // 12.5
lerp(10, 20, -1); // 0
lerp(10, 20, 2); // 30