TrailRenderer.textureMode

描述

选择轨迹纹理的 U 坐标是进行平铺还是拉伸。

拉伸会使纹理沿轨迹的整个长度映射一次，而平铺会使纹理以每个世界单位重复一次。若要设置平铺率，请使用 Material.SetTextureScale。

using UnityEditor;
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public LineTextureMode textureMode = LineTextureMode.Stretch;
    public float tileAmount = 1.0f;
    private TrailRenderer tr;

    void Start()
    {
        tr = GetComponent<TrailRenderer>();
        tr.material = AssetDatabase.GetBuiltinExtraResource<Material>("Default-Particle.mat");
    }

    void Update()
    {
        tr.textureMode = textureMode;
        tr.material.SetTextureScale("_MainTex", new Vector2(tileAmount, 1.0f));
        tr.transform.position = new Vector3(Mathf.Sin(Time.time * 1.51f) * 7.0f, Mathf.Cos(Time.time * 1.27f) * 4.0f, 0.0f);
    }

    void OnGUI()
    {
        textureMode = GUI.Toggle(new Rect(25, 25, 200, 30), textureMode == LineTextureMode.Tile, "Tiled") ? LineTextureMode.Tile : LineTextureMode.Stretch;

        if (textureMode == LineTextureMode.Tile)
        {
            GUI.Label(new Rect(25, 60, 200, 30), "Tile Amount");
            tileAmount = GUI.HorizontalSlider(new Rect(125, 65, 200, 30), tileAmount, 0.1f, 4.0f);
        }
    }
}