Bug No UV change after fixing UV map

Hello,

I have a script that create mesh for an hexmap. Every cell (that contain 6 vertices) store data using UV1, UV2, UV3. There is a lot of data I will not explain all of them but what is important is that when cells change some UVs data it is visible in their shader :




But my vertices weren't "UVmap" so I cannot use some shader effect on it. Anyway after a lot of research I found this script that is doing perfectly what I need :
https://github.com/kurtdekker/makegeo/blob/master/makegeo/Assets/setuvtoworld/SetUVToWorld.cs

But the problem is : when I use SetUVToWorld.cs on a MeshRenderer, every datas on UV1, UV2, UV3 is "set in stone" and cannot change anymore. I like this script but I lost my ability to alterate the mesh.

In the next video you can see a change of texture thanks to SetUVToWorld.cs + using another shader. But after that I can't alterate anything :


Code for my HexMesh that add UV1 UV2 UV3 vectors :

Code (CSharp):

1.  
2. [RequireComponent(typeof(MeshFilter), typeof(MeshRenderer))]
3. public class HexMesh : MonoBehaviour {
4.    
5.     public HexFeatureManager features;
6.  
7.     [NonSerialized] List<Vector3> vertices, terrainTypes;
8.     [NonSerialized] List<Vector3> extraData_Fog_Terrain_Transition_LayerOver;
9.     [NonSerialized] List<Vector3> extraData_ColorCoeff_Height_other;
10.     [NonSerialized] List<Color> colors;
11.     [NonSerialized] List<int> triangles;
12.  
13.     Mesh hexMesh;
14.     MeshCollider meshCollider;
15.  
16.     void Awake () {
17.         GetComponent<MeshFilter>().mesh = hexMesh = new Mesh();
18.         meshCollider = gameObject.AddComponent<MeshCollider>();
19.         hexMesh.name = "Hex_Mesh";
20.     }
21.  
22.     public void Clear()
23.     {
24.         hexMesh.Clear();
25.         vertices = ListPool<Vector3>.Get();
26.         colors = ListPool<Color>.Get();
27.         terrainTypes = ListPool<Vector3>.Get();
28.         extraData_Fog_Terrain_Transition_LayerOver = ListPool<Vector3>.Get();
29.         extraData_ColorCoeff_Height_other = ListPool<Vector3>.Get();
30.         triangles = ListPool<int>.Get();
31.     }
32.  
33.     public void Apply()
34.     {
35.         hexMesh.SetVertices(vertices);
36.         ListPool<Vector3>.Add(vertices);
37.  
38.         hexMesh.SetColors(colors);
39.         ListPool<Color>.Add(colors);
40.  
41.         hexMesh.SetUVs(1, terrainTypes);
42.         ListPool<Vector3>.Add(terrainTypes);
43.  
44.         hexMesh.SetUVs(2, extraData_Fog_Terrain_Transition_LayerOver);
45.         ListPool<Vector3>.Add(extraData_Fog_Terrain_Transition_LayerOver);
46.  
47.         hexMesh.SetUVs(3, extraData_ColorCoeff_Height_other);
48.         ListPool<Vector3>.Add(extraData_ColorCoeff_Height_other);
49.  
50.         hexMesh.SetTriangles(triangles, 0);
51.         ListPool<int>.Add(triangles);
52.  
53.         meshCollider.sharedMesh = hexMesh;
54.     }
55. }

Function Apply() is called by the chunk to update mesh :

Code (CSharp):

1.  
2.     //HexGridChunk.CS
3.  
4.     public void Triangulate()
5.     {
6.         terrain.Clear();
7.         for (int i = 0; i < cells.Length; i++)
8.         {
9.             Triangulate(cells[i]);
10.         }
11.         terrain.Apply();
12.     }
13.    
14.  

Code (CSharp):

1. // @kurtdekker
2. public class SetUVToWorld : MonoBehaviour
3. {
4.     // set this if you are putting it on a parent object, otherwise
5.     // this script operates only on the current GameObject.
6.     public    bool        DriveToAllChildren;
7.  
8.     public    Material    MaterialToUse;
9.  
10.     public    bool        PreserveColor;
11.  
12.     public    bool        IncludeRotation;
13.  
14.     void Reset()
15.     {
16.         IncludeRotation = true;
17.         MaterialToUse = null;
18.     }
19.  
20.     public static void AddToAllMeshRenderersWithMeshFilters(
21.         GameObject go,
22.         bool _PreserveColor = false,
23.         Material _MaterialToUse = null)
24.     {
25.         MeshRenderer[] rndrrs = go.GetComponentsInChildren<MeshRenderer> ();
26.         foreach( var mr in rndrrs)
27.         {
28.             MeshFilter mf = mr.GetComponent<MeshFilter> ();
29.             if (mf != null)
30.             {
31.                 var uvsetter = mr.gameObject.AddComponent<SetUVToWorld> ();
32.                 uvsetter.PreserveColor = _PreserveColor;
33.                 uvsetter.MaterialToUse = _MaterialToUse;
34.             }
35.         }
36.     }
37.  
38.     void Start()
39.     {
40.         // be careful: we are intentionally adding instances of this
41.         // script that don't have the DriveToAllChildren bit set, in
42.         // order to benefit from setting things once.
43.         if (DriveToAllChildren)
44.         {
45.             AddToAllMeshRenderersWithMeshFilters(
46.                 gameObject, PreserveColor, MaterialToUse);
47.             return;
48.         }
49.  
50.         MeshFilter mf = GetComponent<MeshFilter> ();
51.         if (mf)
52.         {
53.             Vector2[] uvs = mf.mesh.uv;
54.             Vector3[] verts = mf.mesh.vertices;
55.             int[] tris = mf.mesh.triangles;
56.  
57.             if (uvs.Length != verts.Length)
58.             {
59.                 uvs = new Vector2[ verts.Length];
60.             }
61.  
62.             for (int i = 0; i < verts.Length; i++)
63.             {
64.                 verts [i] = transform.TransformPoint (verts [i]);
65.                 if (!IncludeRotation)
66.                 {
67.                     verts [i] = Quaternion.Inverse (transform.rotation) * verts [i];
68.                 }
69.             }
70.  
71.             for ( int i = 0; i < tris.Length; i += 3)
72.             {
73.                 Vector3 norm = Vector3.Cross (
74.                     verts [tris [i + 1]] - verts [tris [i + 0]],
75.                     verts [tris [i + 1]] - verts [tris [i + 2]]).normalized;
76.  
77.                 float dotX = Mathf.Abs (Vector3.Dot (norm, Vector3.right));
78.                 float dotY = Mathf.Abs (Vector3.Dot (norm, Vector3.up));
79.                 float dotZ = Mathf.Abs (Vector3.Dot (norm, Vector3.forward));
80.  
81.                 if (dotX > dotY && dotX > dotZ)
82.                 {
83.                     for ( int j = 0; j < 3; j++)
84.                     {
85.                         uvs [tris[i + j]] = new Vector2 (verts [tris[i + j]].z, verts [tris[i + j]].y);
86.                     }
87.                 }
88.                 else
89.                 {
90.                     if (dotY > dotX && dotY > dotZ)
91.                     {
92.                         for ( int j = 0; j < 3; j++)
93.                         {
94.                             uvs [tris[i + j]] = new Vector2 (verts [tris[i + j]].x, verts [tris[i + j]].z);
95.                         }
96.                     }
97.                     else
98.                     {
99.                         for ( int j = 0; j < 3; j++)
100.                         {
101.                             uvs [tris[i + j]] = new Vector2 (verts [tris[i + j]].x, verts [tris[i + j]].y);
102.                         }
103.                     }
104.                 }
105.             }
106.             mf.mesh.uv = uvs;
107.  
108.             if (MaterialToUse)
109.             {
110.                 Dictionary<Color, Material> ColorDictToSaveDrawcalls = new Dictionary<Color, Material>();
111.  
112.                 Renderer rndrr = GetComponent<Renderer>();
113.                 if (rndrr)
114.                 {
115.                     Material[] allNewMaterials = new Material[ rndrr.materials.Length];
116.  
117.                     for (int i = 0; i < allNewMaterials.Length; i++)
118.                     {
119.                         Color preservedColor = Color.white;
120.  
121.                         Material originalMaterial = rndrr.materials[i];
122.  
123.                         var instancedMaterial = MaterialToUse;
124.  
125.                         if (originalMaterial)
126.                         {
127.                             if (PreserveColor)
128.                             {
129.                                 preservedColor = originalMaterial.color;
130.  
131.                                 if (ColorDictToSaveDrawcalls.ContainsKey( preservedColor))
132.                                 {
133.                                     instancedMaterial = ColorDictToSaveDrawcalls[preservedColor];
134.                                 }
135.                                 else
136.                                 {
137.                                     instancedMaterial = new Material( MaterialToUse);
138.                                     instancedMaterial.color = preservedColor;
139.                                     ColorDictToSaveDrawcalls[preservedColor] = instancedMaterial;
140.                                 }
141.                             }
142.                         }
143.  
144.                         allNewMaterials[i] = instancedMaterial;
145.                     }
146.  
147.                     rndrr.materials = allNewMaterials;
148.                 }
149.             }
150.         }
151.         else
152.         {
153.             Debug.LogError (
154.                 GetType() + ": there is no MeshFilter on GameObject '" + name + "'!");
155.         }
156.     }
157. }

I love SetUvWorld script but I don't understant why it remove my script capacity to change their UV1 UV2 UV3 ?