Multiple Perspective Points
In images with multiple perspective points there is not just one set of lines going into the distance. This painting by Charles Burton has many objects at slightly different angles to one another. For example, the portrait on the right is leaning instead of vertical and the carpet is not at quite the same angle as the floorboards. How many perspective points has he needed to paint his subject convincingly?
The diagram shows some lines of perspective in the painting. The different floorboard lines are in yellow and light blue and the carpet lines are in dark blue and red. The dark green lines are the sides of the chair and the light green line is the side of the painting. The perspective points are all far beyond the picture edges.