Smoothstep

Menu Path : Operator > Math > Arithmetic > Smoothstep

The Smoothstep Operator calculates a smooth Hermite interpolation of a value between two border values with smoothing at the limits.

This Operator returns a value between 0 and 1, depending on the value of X, Y, and S:

• If S is less than or equal to X, the result is 0.
• If S is greater than or equal to Y, the result is 1.
• If S is between X and Y, the result is a smooth transition between 0 and 1.

This Operator accepts input values of various types. For the list of types this Operator can use, see Available Types. The X and Y input are always of the same type. S changes to be the same type as X and Y.

Operator properties

Input	Type	Description
X	Configurable	The minimum step value.
Y	Configurable	The maximum step value.
S	Configurable	A value for the interpolation. An input of either float type or the same type as X.

Output	Type	Description
Out	Output Port	A value between 0 and 1, based on the Hermite interpolation of S.

Operator configuration

To view the Smoothstep Operator’s configuration, click the cog icon in the Operator’s header. X and Y must be the same type among Available Types. If S is a vector type, Unity calculates the interpolation value by value.

Available types

You can use the following types for your input ports:

• float
• Vector
• Vector2
• Vector3
• Vector4
• Position
• Direction