Juggling multiple elements in perspective
Most of the time, you won't be drawing cartoons with just a single element; chances are you'll be drawing objects in relation to other objects around them. Consequently, it's important to demonstrate how multiple objects work in connection to one another in two- and three-point perspectives.
For example, if you draw a chair, you'll probably draw the objects that sit near the chair, such as a table and a lamp. To make sure these items are in two-point perspective, the lines of all the objects should be generally moving toward the same vanishing points on the same horizon line. This doesn't mean everything has to line up perfectly, as if it were on a big grid. Objects are moved slightly as they're used throughout a room. The side table may have been bumped or the lamp may have been moved around when it was turned off or on. However, the lamp and table are in the correct scale and perspective in relation to the chair. Figure 12-13 shows the parallel lines that indicate two different angles in the chair, side table, and lamp.
Figure 12-13:
A chair, table, and lamp in two-point perspective.
Figure 12-13:
A chair, table, and lamp in two-point perspective.
If you want to create more of a dramatic background, you can use three-point perspective with this grouping of furniture. To do so, you want to line up all the objects so they meet one of three different vanishing points. Two of those vanishing points meet on the horizon line, and the other meets somewhere either below ground level or in outer space, depending on what you're drawing. Figure 12-14 shows an example; you can see the parallel lines that indicate the three different angles.

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