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Away3D 3.6 Cookbook by Michael Ivanov

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Changing lenses

In 3D graphics, geometry is projected onto a two dimensional plane before being drawn on the screen. This operation is essential because the computer screen by nature has only two dimensions and projection just solves that problem by converting 3D coordinates of an object in a 3D scene into 2D by projecting them. There are different types of projection methods. The most known are Perspective and Orthographic projections. There is a clear technical and visual difference between the two:

  • Perspective projections tend to imitate the view as is perceived by human eyes. That is, for instance, if you stand on a straight railroad, you can see that the rails eventually intersect somewhere on the line of the horizon (also called vanishing ...

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