| brushPosition | Position of the BrushCell. |
| x | X Position of the BrushCell. |
| y | Y Position of the BrushCell. |
| z | Z Position of the BrushCell. |
| sizex | X Size of Brush. |
| sizey | Y Size of Brush. |
| sizez | Z Size of Brush. |
int Index to the BrushCell.
Gets the index to the GridBrush.BrushCell based on the position of the BrushCell.