围绕 Y 轴的旋转乘数。
如果只想更改整体旋转乘数,则此方法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 rotationOverLifetime = ps.rotationOverLifetime;
rotationOverLifetime.enabled = true;
rotationOverLifetime.separateAxes = true;
rotationOverLifetime.xMultiplier = 0.0f;
rotationOverLifetime.yMultiplier = 1.0f;
rotationOverLifetime.zMultiplier = 0.0f;
var psr = GetComponent<ParticleSystemRenderer>();
psr.material = new Material(Shader.Find("Sprites/Default")); // this material renders a square billboard, so we can see the rotation
}
void Update()
{
var main = ps.main;
main.startLifetime = hSliderValue;
}
void OnGUI()
{
hSliderValue = GUI.HorizontalSlider(new Rect(25, 45, 100, 30), hSliderValue, 1.0f, 5.0f);
}
}