Question How to make square ring closed.

I created a mesh of square ring, which has 16 vertices, then there were 8 square,
each square has two triangles.

Please check the picture attached.

I got right mesh, it's a ring, but wrong image texture.
The image texture repeated a whole image at the end (top of the square ring).

Code (CSharp):

1.  
2.     static float w = 0.75f;
3.     static float h = 1f;
4.     static float t = 0.3f;
5.     static float arc = 0.1f;
6.     GameObject main;
7.     GameObject front;
8.     GameObject bottom;
9.     GameObject side;
10.  
11.     public static Mesh createMesh(GameObject obj) {
12.         Mesh mesh = null;
13.         MeshFilter meshFilter = obj.AddComponent<MeshFilter>();
14.  
15.         mesh = new Mesh();
16.         meshFilter.mesh = mesh;
17.         MeshRenderer renderer = obj.AddComponent<MeshRenderer>();
18.  
19.         Material mat = new Material(Shader.Find("Legacy Shaders/Transparent/Diffuse"));
20.         mat.color = Color.white;
21.         renderer.material = mat;
22.  
23.         return mesh;
24.     }
25.     private void Start() {
26.          Mesh meshSide = createMesh(side);
27.         NativeList<JobHandle> jobHandleList = new NativeList<JobHandle>(Allocator.Temp);
28.  
29.         int id = JobSideMeshStruct.getId();
30.         MeshData data = new MeshData();
31.         meshDataMap.Add(id, data);
32.  
33.         JobSideMeshStruct jobCreateSide = new JobSideMeshStruct(id);
34.         jobHandleList.Add(jobCreateSide.Schedule());
35.  
36.         JobHandle.CompleteAll(jobHandleList);
37.         jobHandleList.Dispose();
38.  
39.         meshSide.vertices = data.vertices;
40.         meshSide.uv = data.uv;
41.         meshSide.triangles = data.triangles;
42.  
43.         StartCoroutine(loadSidePicture());
44.     }
45.  
46.     private IEnumerator loadSidePicture() {
47.         side.GetComponent<MeshRenderer>().material.mainTexture = Resources.Load("type/side") as Texture;
48.         yield return null;
49.     }
50.  
51.     static Dictionary<int, MeshData> meshDataMap = new Dictionary<int, MeshData>();
52.  
53.     //[BurstCompile]
54.     public struct JobSideMeshStruct : IJob
55.     {
56.         const int vecterCount = 16;
57.         static private int ID = 0;
58.         static private object l = new object();
59.         public static int getId() {
60.             int i = 0;
61.             lock(l) {
62.                 ID++;
63.                 i = ID;
64.             }
65.             return i;
66.         }
67.  
68.         private int id;
69.  
70.         public JobSideMeshStruct(int i) {
71.             id = i;
72.         }
73.  
74.         public void Execute()
75.         {
76.             /*byte[] arr = new byte[inStr.Length];
77.             inStr.CopyTo(arr);
78.             string s = new string(Encoding.ASCII.GetChars(arr));*/
79.  
80.             MeshData data = meshDataMap[id];
81.  
82.             Vector3[] vertices = new Vector3[vecterCount+2];
83.             Vector2[] uv = new Vector2[vecterCount+2];
84.  
85.             int i = 0;
86.             vertices[0]  = new Vector3(arc, h, 0);
87.             vertices[2]  = new Vector3(0, h - arc, 0);
88.             vertices[4]  = new Vector3(0, arc, 0);
89.             vertices[6]  = new Vector3(arc, 0, 0);
90.             vertices[8]  = new Vector3(w - arc, 0, 0);
91.             vertices[10] = new Vector3(w, arc, 0);
92.             vertices[12] = new Vector3(w, h - arc, 0);
93.             vertices[14] = new Vector3(w - arc, h, 0);
94.  
95.             for (i = 1; i < vecterCount; i += 2) {
96.                 vertices[i] = vertices[i - 1];
97.                 vertices[i].z = t;
98.             }
99.  
100.             float bevelSize = (float)Math.Sqrt(2 * arc * arc);
101.             float _w = w - 2 * arc;
102.             float _h = h - 2 * arc;
103.  
104.             float y = 0;
105.             float len = (float) ((_w + _h) * 2 + bevelSize * 4);
106.  
107.             Debug.Log("side total len="+len+ ",bevelSize="+ bevelSize+ ",_w="+ _w+ ", _h="+ _h);
108.             String log = "";
109.             int step = 0;
110.             float last = 0;
111.             float cur = 0;
112.             for (i = 0; i < 16; i++) {
113.            
114.                 uv[i++] = new Vector2(1, y/len);
115.                 uv[i] = new Vector2(0, y/len);
116.                 cur = (y * 200);
117.                 log += "step=" + step + ", y=" + (y / len)+", img y="+ cur + ",v="+(cur-last)+"\n";
118.  
119.                 last = cur;
120.  
121.                 if (step % 2 == 0)
122.                     y += bevelSize;
123.                 else
124.                 {
125.                     if (step % 4 == 1)
126.                         y += _h;
127.                     else
128.                         y += _w;
129.                 }
130.  
131.                 step++;
132.             }
133.             Debug.Log(log);
134.  
135.             /* this got no use
136.             vertices[16] = vertices[0];
137.             vertices[17] = vertices[1];
138.  
139.             uv[16] = uv[0];
140.             uv[17] = uv[1];
141.             */
142.             data.vertices = vertices;
143.             data.uv = uv;
144.  
145.             int[] triangles = new int[48];
146.             i = 0;
147.             int idx = 0;
148.             for (i=0; i< vecterCount; i+=2) {
149.                 triangles[idx++] = i;
150.                 triangles[idx++] = i + 2;
151.                 triangles[idx++] = i + 1;
152.  
153.                 triangles[idx++] = i + 1;
154.                 triangles[idx++] = i + 2;
155.                 triangles[idx++] = i + 3;
156.  
157.                 //Debug.Log("idx="+idx+", i="+(i+3));
158.             }
159.  
160.             for (i=0; i< triangles.Length-2; i++) {
161.                 if (triangles[i] >= vecterCount)
162.                 {
163.                     Debug.LogError("triangles[" + i + "]=" + triangles[i]);
164.                     triangles[i] = triangles[i] % vecterCount;
165.                 }
166.             }
167.  
168.             data.triangles = triangles;
169.         }
170.     }

How to make the texture closed right?
May thanks for any help!

 

That's because you are going from u=0.9 to u=0 instead of u=0.9 to u=1.
You have to duplicate the vertices which close the loop and assign u=0 and u=1 to them respectively.

 

Many thanks!

Code (CSharp):

1.             vertices[16] = vertices[0];
2.             vertices[17] = vertices[1];
3.             uv[16] = new Vector2(0, 1);
4.             uv[17] = new Vector2(1, 1);
5.            
6.            /*for (i=0; i< triangles.Length-2; i++) {//wrong code
7.                 if (triangles[i] >= vecterCount)
8.                 {
9.                     Debug.LogError("triangles[" + i + "]=" + triangles[i]);
10.                     triangles[i] = triangles[i] % vecterCount;
11.                 }
12.             }*/
13.  
14.  

I added overlap vertices and uv.