Question by GameDeveloperAf · Apr 21, 2021 at 02:11 PM · mesh worldspace triangles meshfilter triangle

URGENT How to get triangles of mesh in world space?

I found how to get vertices of mesh in world space but I can not find it for triangles in world space

Here is code for vertices in world space bur how about is triangle in the world space

     public MeshFilter meshFilter;
 
     public Vector3[] vertices;
     public int[] triangles;
     
     Matrix4x4 localToWorld;
 
     void Start()
     {
         meshFilter = GetComponent<MeshFilter>();
 
         localToWorld = transform.localToWorldMatrix;
 
         vertices = new Vector3[meshFilter.mesh.vertexCount * 3];
         for (int i = 0; i < meshFilter.mesh.vertexCount; i++)
         {
             vertices[i * 3] = localToWorld.MultiplyPoint3x4(meshFilter.mesh.vertices[i]);
         }
      
         // For TRIANGLES??????????????????
     }

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Hellium · Apr 21, 2021 at 04:46 PM 0

mesh.triangles is just an array of indices so there is no such things as "world triangles". triangles[0], triangles[1] and triangles[2] are the indices of the vertex for$$anonymous$$g the 1st triangle.

GameDeveloperAf Hellium · Apr 21, 2021 at 05:08 PM 0

So correctly I understood that There is nothing to with world space triangle?

so for Triangles I will use like this

         triangles = new int[meshFilter.mesh.triangles.Length];
         for (int i = 0; i < meshFilter.mesh.triangles.Length; i++)
         {
             triangles[i] = meshFilter.mesh.triangles[i];
         }

I wanted just to tell that this is not one object. There are a lot of meshes that I want to get word space vertices. So you say that there is not triangle world space then ok I will test If there would be issue then I will tell you

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URGENT How to get triangles of mesh in world space?

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