int[] triangles = new int[tri * 3];

        for (int t = 0; t < tri; t++)
        {
            int triangleIndex = t * 6;

            print(triangleIndex);

            triangles[triangleIndex + 0] = 0;
            triangles[triangleIndex + 1] = 3;
            triangles[triangleIndex + 2] = 1;

            triangles[triangleIndex + 3] = 3;
            triangles[triangleIndex + 4] = 4;
            triangles[triangleIndex + 5] = 1;

        }