public void Paste(Scene scene, Vector3 translation, ViewportOrientation viewport)
 {
     if (viewport == ViewportOrientation.Top)
     {
         translation.Y = copiedElemCenter.y;
     }
     else if (viewport == ViewportOrientation.Front)
     {
         translation.Z = copiedElemCenter.z;
     }
     else if (viewport == ViewportOrientation.Side)
     {
         translation.X = copiedElemCenter.x;
     }
     scene.AddPreparedElement(copyBuffer, translation);
 }