public float sizeMultiplier ;

如果只想更改整体大小乘数,则更改该属性比访问整条曲线更加高效。

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { private ParticleSystem ps; public float hSliderValue = 1.0f;

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

var sizeBySpeed = ps.sizeBySpeed; sizeBySpeed.enabled = true;

sizeBySpeed.sizeMultiplier = 1.0f; sizeBySpeed.range = new Vector2(0.9f, 5.0f);

var psr = GetComponent<ParticleSystemRenderer>(); psr.material = new Material(Shader.Find("Sprites/Default")); // this material renders a square billboard, making it easier to see the size }

void Update() { var main = ps.main; main.startSpeed = hSliderValue; }

void OnGUI() { hSliderValue = GUI.HorizontalSlider(new Rect(25, 45, 100, 30), hSliderValue, 1.0f, 5.0f); } }