unity3D中 material中tiling和offset属性解释
2014-12-08 15:54 糯米粥 阅读(5695) 评论(0) 编辑 收藏 举报贴图有可能是多行多列的一些图案组成的。当我们需要一帧，一帧的播放时候。也就是帧序列动画，
我们就需要用到tiling和offset两个属性，
默认图片的左下角为坐标圆点即：（0,0）
tiling是图片的大小，offset是偏移量
来看看一些例子：
1 using UnityEngine; 2 using System.Collections; 3 4 public class animspite : MonoBehaviour 5 { 6 7 8 public int totolFrame;//总帧数，即多少帧 9 public int fbs;//帧速度 即 1秒运行多少帧 10 public int rowNumber; //几行 11 public int colNumber; //几列 12 public bool isDes = false; //是否播放一次就销毁对象 13 // Use this for initialization 14 void Start() 15 { 16 //判断当前平台 17 #if UNITY_EDITOR 18 Debug.Log("Unity Editor"); 19 #endif 20 21 #if UNITY_IPHONE 22 Debug.Log("Iphone"); 23 #endif 24 25 #if UNITY_STANDALONE_OSX 26 Debug.Log("Stand Alone OSX"); 27 #endif 28 29 #if UNITY_STANDALONE_WIN 30 Debug.Log("Stand Alone Windows"); 31 #endif 32 } 33 34 // Update is called once per frame 35 void Update() 36 { 37 int index = (int)(Time.time * fbs); 38 39 index = index % totolFrame; 40 41 float sizeX = 1.0f / colNumber; 42 float sizeY = 1.0f / rowNumber; 43 Vector2 size = new Vector2(sizeX, sizeY); 44 45 float uIndex = index % colNumber; 46 float vIndex = index / colNumber;
//int vIndex = index % rowNumber; 47 48 float offsetX = uIndex * size.x; 49 float offsetY = (1.0f - size.y) - (vIndex * size.y); 50 //offsetY = 1.0f * vIndex / rowNumber; 51 52 Vector2 offset = new Vector2(offsetX, offsetY); 53 54 transform.renderer.material.mainTextureScale = size; 55 transform.renderer.material.mainTextureOffset = offset; 56 57 58 if (isDes) 59 { 60 if (Time.time > 1) 61 { 62 Destroy(this.gameObject); 63 } 64 } 65 } 66 }
1 //--------------更直观的分割线---------------------- 2 int currentFame = (int)(Time.time * fbs); //算出当前帧
if (assing != 0) currentFame = assing;//当指定assing值时，即只播放指定帧的动画
3 Vector2 size = new Vector2(); //算出当前帧，图片的坐标 4 size.x = 1.0f / colNumber; 5 size.y = 1.0f / rowNumber; 6 7 //算出当前帧，图片分别在x。y轴上的坐标 8 float xFrame = currentFame % colNumber; 9 float yFrmae = currentFame / colNumber; 10 11 Vector2 offset = new Vector2(); //算出当前帧，图片的偏移量 12 offset.x = xFrame * size.x; 13 offset.y = 1.0f - size.y - (yFrmae * size.y); 14 15 //赋值 16 transform.renderer.material.mainTextureScale = size; 17 transform.renderer.material.mainTextureOffset = offset;
1 /*参考自网络*/ 2 public int rowCount = 4; //图片的中帧图片的行数 3 public int colCount = 4; //图片的中帧图片的列数 4 public int rowStart = 0; //开始播放的行下标 5 public int colStart = 0; //开始播放的列下标 6 public int totalCells = 4; //帧图片的总数 7 public int fps = 10; //播放速度 8 //Update 9 void Update() 10 { 11 SetSpriteAnimation(colCount, rowCount, rowStart, colStart, totalCells, fps); 12 } 13 14 //SetSpriteAnimation 15 void SetSpriteAnimation(int colCount, int rowCount, int rowStart, int colStart, int totalCells, int fps) 16 { 17 //因为Time.time的为游戏运行的时间，所以index=1,2,3,4... 18 int index = (int)(Time.time * fps); 19 index = index % totalCells; 20 float sizeX = 1.0f / colCount; 21 float sizeY = 1.0f / rowCount; 22 Vector2 size = new Vector2(sizeX, sizeY); 23 var uIndex = index % colCount; 24 var vIndex = index / colCount; 25 float offsetX = (uIndex + colStart) * size.x; 26 //V轴位于图片的下方，因此V要翻转下 27 float offsetY = (1.0f - size.y) - (vIndex + rowStart) * size.y; 28 Vector2 offset = new Vector2(offsetX, offsetY); 29 renderer.material.SetTextureOffset("_MainTex", offset); 30 renderer.material.SetTextureScale("_MainTex", size); 31 }
