6. The Third Dimension
As you should realize by now, perspective drawing doesn’t involve the actual third dimension of the object in the scene. It is merely a simulation of the third dimension to get the closest possible representation of real-world objects on a flat surface.
If the capabilities of Illustrator were restricted to what we have discussed so far, they would not be much use in creating technical illustrations where accurate measurement is a must. So Illustrator has the concept of plane with offset. Here every object in perspective is assumed to belong to a flat surface (plane) that lies at a certain distance from the viewer. This provides the third-dimension information for the object.
Illustrator provides the tools to create technically ...
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