UnityUniformGrid.cs

 private List<Vector3> UniformGrid(Vector3Int numDivisions, Vector3 gridPosition, float scale = 1)
 {
     Assert.IsTrue(numDivisions.x > 0);
     Assert.IsTrue(numDivisions.y > 0);
     Assert.IsTrue(numDivisions.z > 0);
     var count = numDivisions.x * numDivisions.y * numDivisions.z;
     List<Vector3> gridResult = new List<Vector3>(count);
     for (int i = 0; i < count; ++i)
     {
         var position = new Vector3
         {
             x = (i / (numDivisions.y * numDivisions.z)) / Mathf.Max(1, (float)(numDivisions.x - 1)),
             y = ((i / numDivisions.z) % numDivisions.y) / Mathf.Max(1, (float)(numDivisions.y - 1)),
             z = (i % numDivisions.z) / Mathf.Max(1, (float)(numDivisions.z - 1))
         };
         if (numDivisions.x > 1)
             position.x -= .5f;
         if (numDivisions.y > 1)
             position.y -= .5f;
         if (numDivisions.z > 1)
             position.z -= .5f;
         position *= scale;
         position += gridPosition;
         Debug.DrawRay(position, Vector3.up * .1f, Color.green, float.MaxValue);
         gridResult.Add(position);
     }

     return gridResult;
 }