| controlID | @param position Позиция маркера. |
| position | The position of the handle in the space of Handles.matrix. |
| rotation | The rotation of the handle in the space of Handles.matrix. |
| size | @param size Размер маркера. |
| eventType | Event type for the handle to act upon. By design it handles EventType.Layout and EventType.Repaint events. |
Функция, использующаяся для отображения маркера, Handles.RectangleCap.
Custom CapFunction has two responsibilities: For EventType.Layout event, call HandleUtility.AddControl to inform Unity about the distance of the handle from mouse position. For EventType.Repaint event, render the actual handle.