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Perspective Drawing in Adobe Illustrator CS5 by Kaushik Agarwala, Gaurav Jain

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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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