1 using UnityEngine;
2 using System.Collections;
3 public enum OffsetDirection
4 {
5 none,
6 X,
7 Y,
8 XY,
9 negativeX,
10 negativeY
11 }
12
13 public class UVoffset : MonoBehaviour {
14 public Material mat_UVMaterial;
15 public float scrollSpeed = 1.0f;
16 public OffsetDirection dir = OffsetDirection.none;
17 private float offsetX = 0.0f;
18 private float offsetY = 0.0f;
19
20 void Start()
21 {
22 if (renderer.materials.Length == 1) //代表有一种材质
23 {
24 mat_UVMaterial = renderer.material;
25 }
26 else if(mat_UVMaterial==null)
27 {
28 Debug.LogError("存在多个材质球，请选择一个材质球进行UV变换");
29 }
30 }
31
32 // Update is called once per frame
33 void Update () {
34 switch(dir)
35 {
36 case OffsetDirection.none:
37 offsetX = 0;
38 offsetY = 0;
39 break;
40 case OffsetDirection.X:
41 offsetX += scrollSpeed * Time.deltaTime;
42 offsetY = 0;
43 break;
44 case OffsetDirection.Y:
45 offsetX = 0;
46 offsetY += scrollSpeed * Time.deltaTime;
47 break;
48 case OffsetDirection.XY:
49 offsetX += scrollSpeed * Time.deltaTime;
50 offsetY += scrollSpeed * Time.deltaTime;
51 break;
52 case OffsetDirection.negativeX:
53 offsetX -= scrollSpeed * Time.deltaTime;
54 break;
55 case OffsetDirection.negativeY:
56 offsetY -= scrollSpeed * Time.deltaTime;
57 break;
58 }
59 mat_UVMaterial.SetTextureOffset("_MainTex", new Vector2(offsetX, offsetY));
60 }
61 }
