Perspective Analysis
The purple line represents the central axis of perspective.
Blue lines show that most of the stage structure uses a single
point perspective.
Green lines representing a couple of miscellaneous rogue angles
painted in the stage structure.
Red lines show the forced angles of the steps. The base of the
right step follows the single point perspective shown in blue.
The central axis of perspective is slightly right of the centre
of the stage structure in the painting.
