Rasagar/Library/PackageCache/com.unity.shadergraph/Documentation~/Inverse-Lerp-Node.md

Inverse Lerp Node

Description

Returns the linear parameter that produces the interpolant specified by input T within the range of input A to input B.

Inverse Lerp is the inverse operation of the Lerp Node. It can be used to determine what the input to a Lerp was based on its output.

For example, the value of a Lerp between 0 and 2 with a T value of 0.5 is 1. Therefore the value of an Inverse Lerp between 0 and 2 with a T value of 1 is 0.5.

Ports

Name	Direction	Type	Description
A	Input	Dynamic Vector	First input value
B	Input	Dynamic Vector	Second input value
T	Input	Dynamic Vector	Time value
Out	Output	Dynamic Vector	Output value

Generated Code Example

The following example code represents one possible outcome of this node.

void Unity_InverseLerp_float4(float4 A, float4 B, float4 T, out float4 Out)
{
    Out = (T - A)/(B - A);
}