ParticleSystem.TrailModule.widthOverTrail

Description

The curve describing the width, of each trail point.

See Also: MinMaxCurve.

no example available in JavaScript

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {

	private ParticleSystem ps;
	private AnimationCurve curve = new AnimationCurve();
	public bool widthOverTrail = true;

	void Start() {
		ps = GetComponent<ParticleSystem>();

		var main = ps.main;
		main.startColor = new ParticleSystem.MinMaxGradient(Color.red, Color.yellow);
		main.startSize = new ParticleSystem.MinMaxCurve(0.01f, 1.0f);
		main.startLifetime = 1.5f;

		var trails = ps.trails;
		trails.enabled = true;

		curve.AddKey(0.0f, 1.0f);
		curve.AddKey(1.0f, 0.0f);

		var psr = GetComponent<ParticleSystemRenderer>();
		psr.trailMaterial = new Material(Shader.Find("Sprites/Default"));
	}

	void Update() {
		var trails = ps.trails;
		if (widthOverTrail)
			trails.widthOverTrail = new ParticleSystem.MinMaxCurve(1.0f, curve);
		else
			trails.widthOverTrail = 1.0f;
	}

	void OnGUI() {
		widthOverTrail = GUI.Toggle(new Rect(25, 25, 200, 30), widthOverTrail, "Width over Trail");
	}
}