Why doesn't this script work with Imported Meshes?

Hello!

I found this script from Git Hub, it helps set the Materials on models by re calculating them. So it gives off a more seamless effect. It works great on the standard assets from Unity but it does not work with imported meshes from Blender. Is there something I'm doing wrong? Is the mesh UV unwrapped incorrectly?

This is the script.

Code (CSharp):

1. [ExecuteInEditMode]
2. public class ReCalcCubeTexture : MonoBehaviour
3. {
4.     private Vector3 _currentScale;
5.  
6.     private void Start()
7.     {
8.         Calculate();
9.     }
10.  
11.     private void Update()
12.     {
13.         Calculate();
14.     }
15.  
16.     public void Calculate()
17.     {
18.         if (_currentScale == transform.localScale) return;
19.         if (CheckForDefaultSize()) return;
20.  
21.         _currentScale = transform.localScale;
22.         var mesh = GetMesh();
23.         mesh.uv = SetupUvMap(mesh.uv);
24.         mesh.name = "Cube Instance";
25.  
26.         if (GetComponent<Renderer>().sharedMaterial.mainTexture.wrapMode != TextureWrapMode.Repeat)
27.         {
28.             GetComponent<Renderer>().sharedMaterial.mainTexture.wrapMode = TextureWrapMode.Repeat;
29.         }
30.     }
31.  
32.     private Mesh GetMesh()
33.     {
34.         Mesh mesh;
35.  
36. #if UNITY_EDITOR
37.  
38.         var meshFilter = GetComponent<MeshFilter>();
39.         var meshCopy = Instantiate(meshFilter.sharedMesh);
40.         mesh = meshFilter.sharedMesh = meshCopy;
41.  
42. #else
43.        
44.         mesh = GetComponent<MeshFilter>().mesh;
45.  
46. #endif
47.  
48.         return mesh;
49.     }
50.  
51.     private Vector2[] SetupUvMap(Vector2[] meshUVs)
52.     {
53.         var width = _currentScale.x;
54.         var depth = _currentScale.z;
55.         var height = _currentScale.y;
56.  
57.         //Front
58.         meshUVs[2] = new Vector2(0, height);
59.         meshUVs[3] = new Vector2(width, height);
60.         meshUVs[0] = new Vector2(0, 0);
61.         meshUVs[1] = new Vector2(width, 0);
62.  
63.         //Back
64.         meshUVs[7] = new Vector2(0, 0);
65.         meshUVs[6] = new Vector2(width, 0);
66.         meshUVs[11] = new Vector2(0, height);
67.         meshUVs[10] = new Vector2(width, height);
68.  
69.         //Left
70.         meshUVs[19] = new Vector2(depth, 0);
71.         meshUVs[17] = new Vector2(0, height);
72.         meshUVs[16] = new Vector2(0, 0);
73.         meshUVs[18] = new Vector2(depth, height);
74.  
75.         //Right
76.         meshUVs[23] = new Vector2(depth, 0);
77.         meshUVs[21] = new Vector2(0, height);
78.         meshUVs[20] = new Vector2(0, 0);
79.         meshUVs[22] = new Vector2(depth, height);
80.  
81.         //Top
82.         meshUVs[4] = new Vector2(width, 0);
83.         meshUVs[5] = new Vector2(0, 0);
84.         meshUVs[8] = new Vector2(width, depth);
85.         meshUVs[9] = new Vector2(0, depth);
86.  
87.         //Bottom
88.         meshUVs[13] = new Vector2(width, 0);
89.         meshUVs[14] = new Vector2(0, 0);
90.         meshUVs[12] = new Vector2(width, depth);
91.         meshUVs[15] = new Vector2(0, depth);
92.  
93.         return meshUVs;
94.     }
95.  
96.     private bool CheckForDefaultSize()
97.     {
98.         if (_currentScale != Vector3.one) return false;
99.  
100.         var cube = GameObject.CreatePrimitive(PrimitiveType.Cube);
101.  
102.         DestroyImmediate(GetComponent<MeshFilter>());
103.         gameObject.AddComponent<MeshFilter>();
104.         GetComponent<MeshFilter>().sharedMesh = cube.GetComponent<MeshFilter>().sharedMesh;
105.  
106.         DestroyImmediate(cube);
107.  
108.         return true;
109.     }
110. }

As far as I can tell its got something to do with the unwrapping in Blender.

Thank you.

 

That script works specifically with the standard Unity cube, it's not a generic solution, and I don't think the general idea would work on anything else than a cube.
I fail to see how you would get this to work on any other shape.

 

It was my mistake, I was not reading the script correctly. I went another route involving Blender that fixed my issue.