ParticleSystemRenderer.normalDirection

Description 描述

How much are billboard particle normals oriented towards the camera.

Spherizes billboard normals when set to 0, and points them towards the camera when set to 1.

using UnityEngine;
using UnityEditor;
using System.Collections;

public class ExampleClass : MonoBehaviour {

    private ParticleSystem ps;
    private ParticleSystemRenderer psr;
    public float normalDirection = 1.0f;

    void Start() {

        ps = GetComponent<ParticleSystem>();
        psr = GetComponent<ParticleSystemRenderer>();

        psr.material = AssetDatabase.GetBuiltinExtraResource<Material>("Default-Diffuse.mat");
    }

    void Update() {

        psr.normalDirection = normalDirection;
    }

    void OnGUI() {

        normalDirection = GUI.HorizontalSlider(new Rect(25, 25, 100, 30), normalDirection, 0.0f, 1.0f);
    }
}