Smoothstep Node

Description

Returns the result of a smooth Hermite interpolation between 0 and 1, if the value of input In is between the values of inputs Edge1 and Edge2 respectively. Returns 0 if the value of input In is less than the value of input Edge1 and 1 if greater than the value of input Edge2.

The Smoothstep node is similar to the Lerp Node but there are two notable differences. Firstly, with the Smoothstep node, the user specifies the range and the return value is between 0 and 1. You can consider this the opposite of the Lerp Node. Secondly, the Smoothstep node uses smooth Hermite interpolation instead of linear interpolation, which means the interpolation gradually speeds up from the start and slows down toward the end. This interpolation is useful for creating natural-looking animation, fading, and other transitions.

Ports

Name	Direction	Type	Description
Edge1	Input	Dynamic Vector	Minimum step value
Edge2	Input	Dynamic Vector	Maximum step value
In	Input	Dynamic Vector	Input value
Out	Output	Dynamic Vector	Output value

Generated Code Example

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

void Unity_Smoothstep_float4(float4 Edge1, float4 Edge2, float4 In, out float4 Out)
{
    Out = smoothstep(Edge1, Edge2, In);
}