Version: 2022.3
  • C#


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public void SetPosition(int index, Vector3 position);


index Which position to set.
position The new position.


Set the position of a vertex in the line.

Consider using SetPositions instead, if setting multiple positions, as it is much faster than making individual function calls for each position.

Additional resources: positionCount property.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { // Creates a line renderer that follows a Sin() function // and animates it.

public Color c1 = Color.yellow; public Color c2 =; public int lengthOfLineRenderer = 20;

void Start() { LineRenderer lineRenderer = gameObject.AddComponent<LineRenderer>(); lineRenderer.material = new Material(Shader.Find("Sprites/Default")); lineRenderer.widthMultiplier = 0.2f; lineRenderer.positionCount = lengthOfLineRenderer;

// A simple 2 color gradient with a fixed alpha of 1.0f. float alpha = 1.0f; Gradient gradient = new Gradient(); gradient.SetKeys( new GradientColorKey[] { new GradientColorKey(c1, 0.0f), new GradientColorKey(c2, 1.0f) }, new GradientAlphaKey[] { new GradientAlphaKey(alpha, 0.0f), new GradientAlphaKey(alpha, 1.0f) } ); lineRenderer.colorGradient = gradient; }

void Update() { LineRenderer lineRenderer = GetComponent<LineRenderer>(); var t = Time.time; for (int i = 0; i < lengthOfLineRenderer; i++) { lineRenderer.SetPosition(i, new Vector3(i * 0.5f, Mathf.Sin(i + t), 0.0f)); } } }