vtx to texture

MeshToMap.cs

static Texture2D MeshToMap(Mesh mesh)
{
  var vertices = mesh.vertices;
  var count = vertices.Count();

  float r = Mathf.Sqrt(count);
  var width = (int)Mathf.Ceil(r);
  var height = width;

  var positions = vertices.Select(vtx => new Color(vtx.x, vtx.y, vtx.z));

  var tex = CreateMap(positions, width, height);
  
  return tex;
}

static Texture2D CreateMap(IEnumerable<Color> colors, int width, int height)
{
    var tex = new Texture2D(width, height, TextureFormat.RGBAFloat, false);
    tex.filterMode = FilterMode.Point;
    tex.wrapMode = TextureWrapMode.Clamp;

    var buf = new Color[width * height];

    var idx = 0;
    foreach (var color in colors)
    {
        buf[idx] = color;
        idx++;
    }

    tex.SetPixels(buf);
    tex.Apply();

    return tex;
}