Question Is there a way to create a mesh UV image in Runtime?

hello

Like Editor's "UV Layout"
I want to save UV image of Mesh in Runtime

Is there a way ?



[Unity Editor - UV Layout] <-- Like This Image

 

I think you'd have to render it yourself. Use the mesh API
https://docs.unity3d.com/ScriptReference/Mesh.html
Loop through the triangles array in your Mesh.
Every three ints in triangles is a vertex index, look up the uv and then use a line renderer to draw lines connecting three points. The location of the points will be based on the uvs.
After you're done with the whole array, render all of the lines to a render texture.
copy the render texture to a texture2d and write it out to file using Texture2D.EncodeToPNG

 

As you said, I drew and drew UV points.
thank you!..

Code (CSharp):

1.  
2.     public Texture2D ExportMeshUVLayout(Mesh mesh, int width, int height)
3.     {
4.         // Create a new texture to store the UV layout
5.         Texture2D uvLayoutTexture = new Texture2D(width, height);
6.         // Get the UVs of the mesh
7.         Vector2[] uvs = mesh.uv;
8.         // Scale the UVs to fit within the texture dimensions
9.         for (int i = 0; i < uvs.Length; i++)
10.         {
11.             uvs[i] = new Vector2(uvs[i].x * width, uvs[i].y * height);
12.         }
13.         // Clear the texture to black
14.         Color[] colors = new Color[width * height];
15.         for (int i = 0; i < colors.Length; i++)
16.         {
17.             colors[i] = Color.black;
18.         }
19.         uvLayoutTexture.SetPixels(colors);
20.         int[] tris = mesh.triangles;
21.         for (int i = 0; i < tris.Length; i += 3)
22.         {
23.             DrawLine(uvLayoutTexture, uvs[tris[i]], uvs[tris[i + 1]]);
24.             DrawLine(uvLayoutTexture, uvs[tris[i + 1]], uvs[tris[i + 2]]);
25.             DrawLine(uvLayoutTexture, uvs[tris[i + 2]], uvs[tris[i]]);
26.         }
27.         // Apply the changes to the texture
28.         uvLayoutTexture.Apply();
29.        
30.         // Save the texture as a PNG file
31.         byte[] pngData = uvLayoutTexture.EncodeToPNG();
32.         System.IO.File.WriteAllBytes(Application.dataPath + "/UVLayout"+gameObject.name+".png", pngData);
33.         // Return the generated texture
34.         return uvLayoutTexture;
35.     }