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Unity Engine

Lerp(float, float, float)

Linearly interpolates between a and b by t.
Read time 1 minuteLast updated 5 days ago

Definition

  • Type: Method
  • Namespace: UnityEngine
  • Assembly: UnityEngine.CoreModule
public static float Lerp(float a, float b, float t)

Parameters

a

float
The start value.

b

float
The end value.

t

float
The interpolation value between the two floats.

Returns

Type

Description

floatThe interpolated float result between the two float values.

Remarks

The parameter 
t
is clamped to the range [0, 1].
When 
t
= 0 returns 
a
.
When 
t
= 1 return 
b
.
When 
t
= 0.5 returns the midpoint of 
a
and 
b
.
using UnityEngine;public class Example : MonoBehaviour{    // animate the game object from -1 to +1 and back    public float minimum = -1.0F;    public float maximum =  1.0F;    // starting value for the Lerp    static float t = 0.0f;    void Update()    {        // animate the position of the game object...        transform.position = new Vector3(Mathf.Lerp(minimum, maximum, t), 0, 0);        // .. and increase the t interpolater        t += 0.5f * Time.deltaTime;        // now check if the interpolator has reached 1.0        // and swap maximum and minimum so game object moves        // in the opposite direction.        if (t > 1.0f)        {            float temp = maximum;            maximum = minimum;            minimum = temp;            t = 0.0f;        }    }}
Additional Resources: Mathf.LerpUnclamped, Mathf.LerpAngle, Mathf.InverseLerp.